コード例 #1
0
        private void button_create_Geom_Click(object sender, RoutedEventArgs e)
        {
            #region a test example, not important
            m         = 9;
            width     = 8 / 1000.0;
            thickness = 1 / 1000.0;
            l1        = 30 / 1000.0;
            l2        = 16 / 1000.0;
            l3        = 21 / 1000.0;
            F1        = 1;
            F2        = 37;
            F3        = 49;

            l4          = l2;
            l1_         = l1 - 2 * width;
            l2_         = l2;
            l3_         = l3 + 2 * width;
            l4_         = l4;
            cell_length = l1 + l3;
            cell_height = l2 + width;
            #endregion

            Count = int.Parse(textBox_count.Text);
            Random randomSeed       = new Random();
            Random random_m         = new Random(randomSeed.Next());
            Random random_width     = new Random(randomSeed.Next());
            Random random_thickness = new Random(randomSeed.Next());
            Random random_l1        = new Random(randomSeed.Next());
            Random random_l2        = new Random(randomSeed.Next());
            Random random_l3        = new Random(randomSeed.Next());
            Random random_F1        = new Random(randomSeed.Next());
            Random random_F2        = new Random(randomSeed.Next());
            Random random_F3        = new Random(randomSeed.Next());

            for (int j = 0; j < Count; j++)
            {
                Console.WriteLine(string.Format("---------------------------------now No.{0}", j));

                #region generate random Data
                try
                {
                    /* change to double
                     * ran_m = random_m.Next(int.Parse(textBox_hm_cells_min.Text), int.Parse(textBox_hm_cellls_max.Text));
                     * ran_width = random_width.Next(int.Parse(textBox_width_min.Text), int.Parse(textBox_width_max.Text));
                     * ran_thickness = random_thickness.Next(int.Parse(textBox_thickness_min.Text), int.Parse(textBox_thickness_max.Text));
                     * ran_l1 = random_l1.Next(int.Parse(textBox_l1_min.Text), int.Parse(textBox_l1_max.Text));
                     * ran_l2 = random_l2.Next(int.Parse(textBox_l2_min.Text), int.Parse(textBox_l2_max.Text));
                     * ran_l3 = random_l3.Next(int.Parse(textBox_l3_min.Text), int.Parse(textBox_l3_max.Text));
                     * ran_F1 = random_F1.Next(int.Parse(textBox_F1_min.Text), int.Parse(textBox_F1_max.Text));
                     * ran_F2 = random_F2.Next(int.Parse(textBox_F2_min.Text), int.Parse(textBox_F2_max.Text));
                     * ran_F3 = random_F3.Next(int.Parse(textBox_F3_min.Text), int.Parse(textBox_F3_max.Text));
                     */
                    ran_m         = random_m.Next(int.Parse(textBox_hm_cells_min.Text), int.Parse(textBox_hm_cellls_max.Text));
                    ran_width     = random_width.NextDouble() * (int.Parse(textBox_width_max.Text) - int.Parse(textBox_width_min.Text)) + double.Parse(textBox_width_min.Text);
                    ran_thickness = random_thickness.NextDouble() * (int.Parse(textBox_thickness_max.Text) - int.Parse(textBox_thickness_min.Text)) + double.Parse(textBox_thickness_min.Text);
                    ran_l1        = random_l1.NextDouble() * (int.Parse(textBox_l1_max.Text) - int.Parse(textBox_l1_min.Text)) + double.Parse(textBox_l1_min.Text);
                    ran_l2        = random_l2.NextDouble() * (int.Parse(textBox_l2_max.Text) - int.Parse(textBox_l2_min.Text)) + double.Parse(textBox_l2_min.Text);
                    ran_l3        = random_l3.NextDouble() * (int.Parse(textBox_l3_max.Text) - int.Parse(textBox_l3_min.Text)) + double.Parse(textBox_l3_min.Text);
                    ran_F1        = random_F1.NextDouble() * (int.Parse(textBox_F1_max.Text) - int.Parse(textBox_F1_min.Text)) + double.Parse(textBox_F1_min.Text);
                    ran_F2        = random_F2.NextDouble() * (int.Parse(textBox_F2_max.Text) - int.Parse(textBox_F2_min.Text)) + double.Parse(textBox_F2_min.Text);
                    ran_F3        = random_F3.NextDouble() * (int.Parse(textBox_F3_max.Text) - int.Parse(textBox_F3_min.Text)) + double.Parse(textBox_F3_min.Text);
                }
                catch (Exception)
                {
                    Console.WriteLine("Input Format Error");
                    return;
                }


                m         = ran_m;
                width     = (double)(ran_width / 1000.0);
                thickness = (double)(ran_thickness / 1000.0);
                l1        = (double)(ran_l1 / 1000.0);
                l2        = (double)(ran_l2 / 1000.0);
                l3        = (double)(ran_l3 / 1000.0);

                F1 = (double)ran_F1;
                F2 = (double)ran_F2;
                F3 = (double)ran_F3;
                F3 = 0;

                l4          = l2;
                l1_         = l1 - 2 * width;
                l2_         = l2;
                l3_         = l3 + 2 * width;
                l4_         = l4;
                cell_length = l1 + l3;
                cell_height = l2 + width;


                #endregion



                Console.WriteLine(string.Format("{0},{1},{2},{3},{4},{5}", m, width, thickness, l1, l2, l3));

                #region geometrie
                Console.WriteLine("Start creating new Germetrie");

                try
                {
                    swModel = swApp.NewPart();
                }
                catch (Exception)
                {
                    Console.WriteLine("starting SolidWorks");
                    try
                    {
                        swApp = (SldWorks)Marshal.GetActiveObject("SldWorks.Application");
                    }
                    catch (Exception)
                    {
                        swApp         = new SldWorks();
                        swApp.Visible = false;
                    }

                    //get MaterialLib
                    strMaterialLib = swApp.GetExecutablePath() + "\\lang\\english\\sldmaterials\\solidworks materials.sldmat";

                    Console.WriteLine("SolidWorks successfully started");
                    j--;
                    continue;
                }

                swModel.Extension.SelectByID("前视基准面", "PLANE", 0, 0, 0, false, 1, null);
                swModel.InsertSketch2(true);
                #region sketch
                for (int i = 0; i < m; i++)
                {
                    if (i == 0)
                    {
                        swModel.SketchManager.CreateLine(0, 0, 0, l1 - width, 0, 0);
                        swModel.SketchManager.CreateLine(l1 - width, 0, 0, l1 - width, -l2, 0);
                        swModel.SketchManager.CreateLine(l1 - width, -l2, 0, l1 + l3 - width, -l2, 0);
                        swModel.SketchManager.CreateLine(l1 + l3 - width, -l2, 0, l1 + l3 - width, 0, 0);

                        swModel.SketchManager.CreateLine(0, 0, 0, 0, -width, 0);
                        swModel.SketchManager.CreateLine(0, -width, 0, l1_, -width, 0);
                        swModel.SketchManager.CreateLine(l1_, -width, 0, l1_, -(width + l2_), 0);
                        swModel.SketchManager.CreateLine(l1_, -(width + l2_), 0, l1_ + l3_, -(width + l2_), 0);
                        swModel.SketchManager.CreateLine(l1_ + l3_, -(width + l2_), 0, l1_ + l3_, -width, 0);
                    }
                    else
                    {
                        x_o  = i * cell_length - width;
                        y_o  = 0;
                        x_o_ = x_o + width;
                        y_o_ = y_o - width;

                        swModel.SketchManager.CreateLine(x_o, y_o, 0, x_o + l1, 0, 0);
                        swModel.SketchManager.CreateLine(x_o + l1, 0, 0, x_o + l1, -l2, 0);
                        swModel.SketchManager.CreateLine(x_o + l1, -l2, 0, x_o + l1 + l3, -l2, 0);
                        swModel.SketchManager.CreateLine(x_o + l1 + l3, -l2, 0, x_o + l1 + l3, 0, 0);

                        swModel.SketchManager.CreateLine(x_o_, y_o_, 0, x_o_ + l1_, y_o_, 0);
                        swModel.SketchManager.CreateLine(x_o_ + l1_, y_o_, 0, x_o_ + l1_, y_o_ - l2_, 0);
                        swModel.SketchManager.CreateLine(x_o_ + l1_, y_o_ - l2_, 0, x_o_ + l1_ + l3_, y_o_ - l2_, 0);
                        swModel.SketchManager.CreateLine(x_o_ + l1_ + l3_, y_o_ - l2_, 0, x_o_ + l1_ + l3_, y_o_, 0);
                    }
                }
                swModel.SketchManager.CreateLine(x_o_ + l1_ + l3_, y_o_, 0, x_o_ + l1_ + l3_, 0, 0);
                swModel.SketchManager.CreateLine(x_o_ + l1_ + l3_, 0, 0, x_o + l1 + l3, 0, 0);

                #endregion
                swModel.FeatureManager.FeatureExtrusion2(
                    true, false, false, 0, 0, thickness, 0, false, false, false, false, 0, 0, false, false, false, false, true, true, true, 0, 0, true
                    );

                swModel.SaveAsSilent("D:\\TUD\\7.Semeter\\SA\\SA_code\\c#\\W_Form_analyse_get_TrainingDaten\\Geometrie.sldprt", true);
                swApp.CloseAllDocuments(true);
                swApp.OpenDoc("D:\\TUD\\7.Semeter\\SA\\SA_code\\c#\\W_Form_analyse_get_TrainingDaten\\Geometrie.sldprt", (int)swOpenDocOptions_e.swOpenDocOptions_Silent);
                Console.WriteLine("Geometrie success");


                #endregion

                #region simulaiton
                string path_to_cosworks_dll = @"C:\Program Files\SOLIDWORKS Corp\SOLIDWORKS\Simulation\cosworks.dll";
                errors       = swApp.LoadAddIn(path_to_cosworks_dll);
                COSMOSObject = (CwAddincallback)swApp.GetAddInObject("SldWorks.Simulation");
                try
                {
                    COSMOSWORKS = (CosmosWorks)COSMOSObject.CosmosWorks;
                }
                catch (Exception)
                {
                    Console.WriteLine("something wrong in Simulaiton Add In, start a new one");
                    continue;
                }


                COSMOSWORKS = COSMOSObject.CosmosWorks;
                //Get active document
                ActDoc = (CWModelDoc)COSMOSWORKS.ActiveDoc;

                //Create new static study
                StudyMngr = (CWStudyManager)ActDoc.StudyManager;
                Study     = (CWStudy)StudyMngr.CreateNewStudy("static study", (int)swsAnalysisStudyType_e.swsAnalysisStudyTypeStatic, 0, out errCode);

                //Add materials
                SolidMgr  = Study.SolidManager;
                SolidComp = SolidMgr.GetComponentAt(0, out errCode);
                SolidBody = SolidComp.GetSolidBodyAt(0, out errCode);
                intStatus = SolidBody.SetLibraryMaterial(strMaterialLib, "AISI 1020");

                //fixed restraints
                LBCMgr = Study.LoadsAndRestraintsManager;

                swModel = (ModelDoc2)swApp.ActiveDoc;
                swModel.ShowNamedView2("", (int)swStandardViews_e.swIsometricView);

                selectionMgr = (SelectionMgr)swModel.SelectionManager;
                isSelected   = swModel.Extension.SelectByID2("", "FACE", 0, -width / 2.0, thickness / 2.0, false, 0, null, 0);
                if (isSelected)
                {
                    object      selectedFace = (object)selectionMgr.GetSelectedObject6(1, -1);
                    object[]    fixedFaces   = { selectedFace };
                    CWRestraint restraint    = (CWRestraint)LBCMgr.AddRestraint((int)swsRestraintType_e.swsRestraintTypeFixed, fixedFaces, null, out errCode);
                }
                swModel.ClearSelection2(true);

                //add force
                selectionMgr = (SelectionMgr)swModel.SelectionManager;
                isSelected   = swModel.Extension.SelectByID2("", "FACE", x_o + l1 + l3 + (width / 2.0), 0, thickness / 2.0, false, 0, null, 0);
                if (isSelected)
                {
                    object   selectedFace = (object)selectionMgr.GetSelectedObject6(1, -1);
                    object[] forceAdd     = { selectedFace };
                    selectionMgr = (SelectionMgr)swModel.SelectionManager;
                    swModel.Extension.SelectByID2("", "FACE", x_o + l1 + l3 + width, -(l4 + width) / 2.0, thickness / 2.0, false, 0, null, 0);
                    object   selectedFaceToForceDir = (object)selectionMgr.GetSelectedObject6(1, -1);
                    double[] distValue  = null;
                    double[] forceValue = null;
                    double[] Force      = { F2, F3, F1 };
                    cwForce = (CWForce)LBCMgr.AddForce3((int)swsForceType_e.swsForceTypeForceOrMoment, (int)swsSelectionType_e.swsSelectionFaceEdgeVertexPoint,
                                                        2, 0, 0, 0,
                                                        (distValue),
                                                        (forceValue),
                                                        false, true,
                                                        (int)swsBeamNonUniformLoadDef_e.swsTotalLoad,
                                                        0, 7, 0.0,
                                                        Force,
                                                        false, false,
                                                        (forceAdd),
                                                        (selectedFaceToForceDir),
                                                        false, out errCode); //i have tried to figure out these arguments for one day, keep them and dont't change them.
                                                                             //the way to check cwForce : cwForce.GetForceComponentValues()
                                                                             //ForceComponet: [int b1, // 1 if x-direction hat Force-komponent, else 0
                                                                             //                int b2, // 1 if y-direction hat Force-komponent, else 0
                                                                             //                int b3, // 1 if z-direction hat Force-komponent, else 0
                                                                             //                double d1, // Force-komponent in x
                                                                             //                double d2, // Force-komponent in y
                                                                             //                double d3 // Force-komponent in z
                                                                             //                          ]
                                                                             //PS: the definition of xyz seems like not the same as the global XYZ system in SW.
                    swModel.ClearSelection2(true);

                    //meshing
                    CWMesh CWMeshObj = default(CWMesh);
                    CWMeshObj            = Study.Mesh;
                    CWMeshObj.MesherType = (int)swsMesherType_e.swsMesherTypeStandard;
                    CWMeshObj.Quality    = (int)swsMeshQuality_e.swsMeshQualityDraft;
                    errCode   = Study.CreateMesh(0, MeshEleSize, MeshTol);
                    CWMeshObj = null;

                    //run analysis
                    errCode = Study.RunAnalysis();
                    if (errCode != 0)
                    {
                        Console.WriteLine(string.Format("RunAnalysis errCode = {0}", errCode));
                        Console.WriteLine(string.Format("RunAnalysis failed"));



                        swApp.CloseAllDocuments(true);
                        errors = swApp.UnloadAddIn(path_to_cosworks_dll);
                        Console.WriteLine(string.Format("ready to start a new one"));
                        continue;
                    }
                    Console.WriteLine("RunAnalysis successed, ready to get results");

                    //get results
                    CWFeatobj = Study.Results;
                    //get max von Mieses stress
                    Stress = (object[])CWFeatobj.GetMinMaxStress((int)swsStressComponent_e.swsStressComponentVON,
                                                                 0, 0, null,
                                                                 (int)swsStrengthUnit_e.swsStrengthUnitNewtonPerSquareMillimeter,
                                                                 out errCode);
                    maxStress = (float)Stress[3]; //Stress: {node_with_minimum_stress, minimum_stress, node_with_maximum_stress, maximum_stress}
                    Console.WriteLine(maxStress);

                    /*
                     * if (maxStress >= 351.6)
                     * {
                     *  Console.WriteLine("out of yield stress, start a new example");
                     *  errors = swApp.UnloadAddIn(path_to_cosworks_dll);
                     *  swApp.CloseAllDocuments(true);
                     *  j--;
                     *  continue;
                     * }
                     */
                    //get max URES displacement
                    Disp = (object[])CWFeatobj.GetMinMaxDisplacement((int)swsDisplacementComponent_e.swsDisplacementComponentURES,
                                                                     0, null,
                                                                     (int)swsLinearUnit_e.swsLinearUnitMillimeters,
                                                                     out errCode);
                    maxDisp   = (float)Disp[3]; //Disp: {node_with_minimum_displacement, minimum_displacement, node_with_maximum_displacement, maximum_displacement}
                    CWFeatobj = null;
                    Console.WriteLine(string.Format("max Displacement: {0:f4} mm", maxDisp));


                    //output to Excel
                    exlSheet.Cells[j + 2, 1]  = m;
                    exlSheet.Cells[j + 2, 2]  = width * 1000;
                    exlSheet.Cells[j + 2, 3]  = thickness * 1000;
                    exlSheet.Cells[j + 2, 4]  = l1 * 1000;
                    exlSheet.Cells[j + 2, 5]  = l2 * 1000;
                    exlSheet.Cells[j + 2, 6]  = l3 * 1000;
                    exlSheet.Cells[j + 2, 7]  = F1;
                    exlSheet.Cells[j + 2, 8]  = F2;
                    exlSheet.Cells[j + 2, 9]  = F3;
                    exlSheet.Cells[j + 2, 10] = maxStress;
                    exlSheet.Cells[j + 2, 11] = maxDisp;
                    if (j % 5 == 0)
                    {
                        exlBook.Save();//C:\Users\Zhao\Documents\工作簿1.xlsx
                    }

                    errors = swApp.UnloadAddIn(path_to_cosworks_dll);
                    swApp.CloseAllDocuments(true);
                }
                #endregion
            }
            exlBook.SaveCopyAs("D:\\TUD\\7.Semeter\\SA\\SA_code\\c#\\W_Form_analyse_get_TrainingDaten\\W_Form_simulationDaten_" + GetTimeStamp() + "_F3=0" + ".xlsx");
            exlBook.Save();//C:\Users\zhaojie\Documents\工作簿1.xlsx
            exlApp.Quit();
        }
コード例 #2
0
        private void Button_generateFEM_Click(object sender, RoutedEventArgs e)
        {
            #region Variable definition

            int              m;     //how many cells
            int              Count; // how many data
            double           width, thickness, l1, l2, l3, F1, F2, F3;
            double           l4, l1_, l2_, l3_, l4_, cell_length, cell_height;
            double           x_o            = 0.0;
            double           y_o            = 0.0;
            double           x_o_           = 0.0;
            double           y_o_           = 0.0;
            const double     MeshEleSize    = 2.0;
            const double     MeshTol        = 0.1;
            string           strMaterialLib = null;
            object[]         Disp           = null;
            object[]         Stress         = null;
            ModelDoc2        swModel        = null;
            SelectionMgr     selectionMgr   = null;
            CosmosWorks      COSMOSWORKS    = null;
            CwAddincallback  COSMOSObject   = default(CwAddincallback);
            CWModelDoc       ActDoc         = default(CWModelDoc);
            CWStudyManager   StudyMngr      = default(CWStudyManager);
            CWStudy          Study          = default(CWStudy);
            CWSolidManager   SolidMgr       = default(CWSolidManager);
            CWSolidBody      SolidBody      = default(CWSolidBody);
            CWSolidComponent SolidComp      = default(CWSolidComponent);


            CWForce cwForce = default(CWForce);
            CWLoadsAndRestraintsManager LBCMgr = default(CWLoadsAndRestraintsManager);
            CWResults CWFeatobj = default(CWResults);
            bool      isSelected;
            float     maxDisp   = 0.0f;
            float     maxStress = 0.0f;
            int       intStatus = 0;
            int       errors    = 0;
            int       errCode   = 0;
            int       warnings  = 0;



            int ran_m, ran_width, ran_thickness, ran_l1, ran_l2, ran_l3, ran_F1, ran_F2, ran_F3;
            Excel.Application exlApp;
            Excel.Workbook    exlBook;
            Excel.Worksheet   exlSheet;



            #endregion

            #region read data from UI
            try
            {
                m         = int.Parse(textBox_hm_cells.Text);
                width     = double.Parse(textBox_width.Text) / 1000.0;
                thickness = double.Parse(textBox_thickness.Text) / 1000.0;
                l1        = double.Parse(textBox_l1.Text) / 1000.0;
                l2        = double.Parse(textBox_l2.Text) / 1000.0;
                l3        = double.Parse(textBox_l3.Text) / 1000.0;
                F1        = double.Parse(textBox_F1.Text);
                F2        = double.Parse(textBox_F2.Text);
                F3        = double.Parse(textBox_F3.Text);
            }
            catch (Exception)
            {
                MessageBox.Show("input format error, check input data");
                return;
            }

            l4          = l2;
            l1_         = l1 - 2 * width;
            l2_         = l2;
            l3_         = l3 + 2 * width;
            l4_         = l4;
            cell_length = l1 + l3;
            cell_height = l2 + width;
            #endregion

            #region geometrie
            Console.WriteLine("Start creating new Germetrie");
            swModel = swApp.NewPart();
            swModel.Extension.SelectByID("前视基准面", "PLANE", 0, 0, 0, false, 1, null);
            swModel.InsertSketch2(true);
            #region sketch
            for (int i = 0; i < m; i++)
            {
                if (i == 0)
                {
                    swModel.SketchManager.CreateLine(0, 0, 0, l1 - width, 0, 0);
                    swModel.SketchManager.CreateLine(l1 - width, 0, 0, l1 - width, -l2, 0);
                    swModel.SketchManager.CreateLine(l1 - width, -l2, 0, l1 + l3 - width, -l2, 0);
                    swModel.SketchManager.CreateLine(l1 + l3 - width, -l2, 0, l1 + l3 - width, 0, 0);

                    swModel.SketchManager.CreateLine(0, 0, 0, 0, -width, 0);
                    swModel.SketchManager.CreateLine(0, -width, 0, l1_, -width, 0);
                    swModel.SketchManager.CreateLine(l1_, -width, 0, l1_, -(width + l2_), 0);
                    swModel.SketchManager.CreateLine(l1_, -(width + l2_), 0, l1_ + l3_, -(width + l2_), 0);
                    swModel.SketchManager.CreateLine(l1_ + l3_, -(width + l2_), 0, l1_ + l3_, -width, 0);
                }
                else
                {
                    x_o  = i * cell_length - width;
                    y_o  = 0;
                    x_o_ = x_o + width;
                    y_o_ = y_o - width;

                    swModel.SketchManager.CreateLine(x_o, y_o, 0, x_o + l1, 0, 0);
                    swModel.SketchManager.CreateLine(x_o + l1, 0, 0, x_o + l1, -l2, 0);
                    swModel.SketchManager.CreateLine(x_o + l1, -l2, 0, x_o + l1 + l3, -l2, 0);
                    swModel.SketchManager.CreateLine(x_o + l1 + l3, -l2, 0, x_o + l1 + l3, 0, 0);

                    swModel.SketchManager.CreateLine(x_o_, y_o_, 0, x_o_ + l1_, y_o_, 0);
                    swModel.SketchManager.CreateLine(x_o_ + l1_, y_o_, 0, x_o_ + l1_, y_o_ - l2_, 0);
                    swModel.SketchManager.CreateLine(x_o_ + l1_, y_o_ - l2_, 0, x_o_ + l1_ + l3_, y_o_ - l2_, 0);
                    swModel.SketchManager.CreateLine(x_o_ + l1_ + l3_, y_o_ - l2_, 0, x_o_ + l1_ + l3_, y_o_, 0);
                }
            }
            swModel.SketchManager.CreateLine(x_o_ + l1_ + l3_, y_o_, 0, x_o_ + l1_ + l3_, 0, 0);
            swModel.SketchManager.CreateLine(x_o_ + l1_ + l3_, 0, 0, x_o + l1 + l3, 0, 0);

            #endregion
            swModel.FeatureManager.FeatureExtrusion2(
                true, false, false, 0, 0, thickness, 0, false, false, false, false, 0, 0, false, false, false, false, true, true, true, 0, 0, true
                );

            swModel.SaveAsSilent("D:\\TUD\\7.Semeter\\SA\\SA_code\\c#\\W_Form_analyse_FEM_NN_GUI\\Geometrie.sldprt", true);
            swApp.CloseAllDocuments(true);
            swApp.OpenDoc("D:\\TUD\\7.Semeter\\SA\\SA_code\\c#\\W_Form_analyse_FEM_NN_GUI\\Geometrie.sldprt", (int)swOpenDocOptions_e.swOpenDocOptions_Silent);
            Console.WriteLine("Geometrie success");


            #endregion

            #region simulaiton
            string path_to_cosworks_dll = @"C:\Program Files\SOLIDWORKS Corp\SOLIDWORKS\Simulation\cosworks.dll";
            errors       = swApp.LoadAddIn(path_to_cosworks_dll);
            COSMOSObject = (CwAddincallback)swApp.GetAddInObject("SldWorks.Simulation");
            try
            {
                COSMOSWORKS = (CosmosWorks)COSMOSObject.CosmosWorks;
            }
            catch (Exception)
            {
                Console.WriteLine("something wrong in Simulaiton Add In, start a new one");
                swApp.CloseAllDocuments(true);

                return;
            }


            COSMOSWORKS = COSMOSObject.CosmosWorks;
            //Get active document
            ActDoc = (CWModelDoc)COSMOSWORKS.ActiveDoc;

            //Create new static study
            StudyMngr = (CWStudyManager)ActDoc.StudyManager;
            Study     = (CWStudy)StudyMngr.CreateNewStudy("static study", (int)swsAnalysisStudyType_e.swsAnalysisStudyTypeStatic, 0, out errCode);

            //Add materials
            //get MaterialLib
            strMaterialLib = swApp.GetExecutablePath() + "\\lang\\english\\sldmaterials\\solidworks materials.sldmat";
            SolidMgr       = Study.SolidManager;
            SolidComp      = SolidMgr.GetComponentAt(0, out errCode);
            SolidBody      = SolidComp.GetSolidBodyAt(0, out errCode);
            intStatus      = SolidBody.SetLibraryMaterial(strMaterialLib, "AISI 1020");

            //fixed restraints
            LBCMgr = Study.LoadsAndRestraintsManager;

            swModel = (ModelDoc2)swApp.ActiveDoc;
            swModel.ShowNamedView2("", (int)swStandardViews_e.swIsometricView);

            selectionMgr = (SelectionMgr)swModel.SelectionManager;
            isSelected   = swModel.Extension.SelectByID2("", "FACE", 0, -width / 2.0, thickness / 2.0, false, 0, null, 0);
            if (isSelected)
            {
                object      selectedFace = (object)selectionMgr.GetSelectedObject6(1, -1);
                object[]    fixedFaces   = { selectedFace };
                CWRestraint restraint    = (CWRestraint)LBCMgr.AddRestraint((int)swsRestraintType_e.swsRestraintTypeFixed, fixedFaces, null, out errCode);
            }
            swModel.ClearSelection2(true);

            //add force
            selectionMgr = (SelectionMgr)swModel.SelectionManager;
            isSelected   = swModel.Extension.SelectByID2("", "FACE", x_o + l1 + l3 + (width / 2.0), 0, thickness / 2.0, false, 0, null, 0);
            if (isSelected)
            {
                object   selectedFace = (object)selectionMgr.GetSelectedObject6(1, -1);
                object[] forceAdd     = { selectedFace };
                selectionMgr = (SelectionMgr)swModel.SelectionManager;
                swModel.Extension.SelectByID2("", "FACE", x_o + l1 + l3 + width, -(l4 + width) / 2.0, thickness / 2.0, false, 0, null, 0);
                object   selectedFaceToForceDir = (object)selectionMgr.GetSelectedObject6(1, -1);
                double[] distValue  = null;
                double[] forceValue = null;
                double[] Force      = { F2, F3, F1 };
                cwForce = (CWForce)LBCMgr.AddForce3((int)swsForceType_e.swsForceTypeForceOrMoment, (int)swsSelectionType_e.swsSelectionFaceEdgeVertexPoint,
                                                    2, 0, 0, 0,
                                                    (distValue),
                                                    (forceValue),
                                                    false, true,
                                                    (int)swsBeamNonUniformLoadDef_e.swsTotalLoad,
                                                    0, 7, 0.0,
                                                    Force,
                                                    false, false,
                                                    (forceAdd),
                                                    (selectedFaceToForceDir),
                                                    false, out errCode); //i have tried to figure out these arguments for one day, keep them and dont't change them.
                                                                         //the way to check cwForce : cwForce.GetForceComponentValues()
                                                                         //ForceComponet: [int b1, // 1 if x-direction hat Force-komponent, else 0
                                                                         //                int b2, // 1 if y-direction hat Force-komponent, else 0
                                                                         //                int b3, // 1 if z-direction hat Force-komponent, else 0
                                                                         //                double d1, // Force-komponent in x
                                                                         //                double d2, // Force-komponent in y
                                                                         //                double d3 // Force-komponent in z
                                                                         //                          ]
                                                                         //PS: the definition of xyz seems like not the same as the global XYZ system in SW.
                swModel.ClearSelection2(true);

                //meshing
                CWMesh CWMeshObj = default(CWMesh);
                CWMeshObj            = Study.Mesh;
                CWMeshObj.MesherType = (int)swsMesherType_e.swsMesherTypeStandard;
                CWMeshObj.Quality    = (int)swsMeshQuality_e.swsMeshQualityDraft;
                errCode   = Study.CreateMesh(0, MeshEleSize, MeshTol);
                CWMeshObj = null;

                //run analysis
                errCode = Study.RunAnalysis();
                if (errCode != 0)
                {
                    Console.WriteLine(string.Format("RunAnalysis errCode = {0}", errCode));
                    Console.WriteLine(string.Format("RunAnalysis failed"));

                    errors = swApp.UnloadAddIn(path_to_cosworks_dll);
                    swApp.CloseAllDocuments(true);
                    Console.WriteLine(string.Format("please start a new one"));
                    return;
                }
                Console.WriteLine("RunAnalysis successed, ready to get results");

                //get results
                CWFeatobj = Study.Results;
                //get max von Mieses stress
                Stress = (object[])CWFeatobj.GetMinMaxStress((int)swsStressComponent_e.swsStressComponentVON,
                                                             0, 0, null,
                                                             (int)swsStrengthUnit_e.swsStrengthUnitNewtonPerSquareMillimeter,
                                                             out errCode);
                maxStress = (float)Stress[3]; //Stress: {node_with_minimum_stress, minimum_stress, node_with_maximum_stress, maximum_stress}
                Console.WriteLine(maxStress);
                if (maxStress >= 351.6)
                {
                    Console.WriteLine("out of yield stress, start a new example");
                    errors = swApp.UnloadAddIn(path_to_cosworks_dll);
                    swApp.CloseAllDocuments(true);
                    textBox_FEM_result.Text = "out of yield stress";
                    return;
                }
                //get max URES displacement
                Disp = (object[])CWFeatobj.GetMinMaxDisplacement((int)swsDisplacementComponent_e.swsDisplacementComponentURES,
                                                                 0, null,
                                                                 (int)swsLinearUnit_e.swsLinearUnitMillimeters,
                                                                 out errCode);
                maxDisp   = (float)Disp[3]; //Disp: {node_with_minimum_displacement, minimum_displacement, node_with_maximum_displacement, maximum_displacement}
                CWFeatobj = null;
                Console.WriteLine(string.Format("max Displacement: {0:f4} mm", maxDisp));
                textBox_FEM_result.Text = maxDisp.ToString();
            }
            else
            {
                Console.WriteLine("not selected");
            }
            #endregion
            errors = swApp.UnloadAddIn(path_to_cosworks_dll);
            swApp.CloseAllDocuments(true);
        }