Example #1
0
        private void tabPage4_Paint(object sender, PaintEventArgs e)
        {
            Graphics g    = e.Graphics;
            int      maxX = 0;

            int[]    tempDiameter = new int[5];
            double[] diameter     = new double[5];
            double   maxDiameter;
            float    x1 = 100, y1 = 10;

            for (int i = 0; i <= 500; i += 100)
            {
                if (MyCalculate.IsMxMyMzMore(i, maxX))
                {
                    maxX = i;
                }
            }
            int maxDiameterIndex;

            if ((maxX >= 0 && maxX <= 50) || (maxX >= 450 && maxX <= 500))
            {
                maxDiameterIndex = 4;
            }
            else if (maxX > 50 && maxX <= 150)
            {
                maxDiameterIndex = 3;
            }
            else if (maxX > 150 && maxX <= 350)
            {
                maxDiameterIndex = 2;
            }
            else
            {
                maxDiameterIndex = 1;
            }
            g.DrawString("危险截面的横坐标:  x=" + Math.Round(a * maxX / 100.0, 2) + "m     截面直径为Φ" + maxDiameterIndex + "\n\n设计直径:",
                         font1, brush1, x1, y1);

            //设计直径1
            maxX = 350;
            for (int i = 351; i <= 450; i++)
            {
                if (MyCalculate.IsMxMyMzMore(i, maxX))
                {
                    maxX = i;
                }
            }
            maxDiameter = Math.Pow((32 * Math.Sqrt(MyCalculate.SumOfSquaresMxyz(maxX))) / (pi * permissibleStress), 1 / 3.0);
            diameter[1] = maxDiameter * 1000;
            g.DrawString("Φ1≥" + Math.Round(maxDiameter * 1000, 2) + "mm    在 x=" + maxX * a / 100.0 + "m 处应力最大",
                         font1, brush1, x1, y1 + 80);

            //设计直径2
            maxX = 150;
            for (int i = 151; i <= 350; i++)
            {
                if (MyCalculate.IsMxMyMzMore(i, maxX))
                {
                    maxX = i;
                }
            }
            maxDiameter = Math.Pow((32 * Math.Sqrt(MyCalculate.SumOfSquaresMxyz(maxX))) / (pi * permissibleStress), 1 / 3.0);
            diameter[2] = maxDiameter * 1000;
            g.DrawString("Φ2≥" + Math.Round(maxDiameter * 1000, 2) + "mm    在 x=" + maxX * a / 100.0 + "m 处应力最大",
                         font1, brush1, x1, y1 + 120);

            //设计直径3
            maxX = 50;
            for (int i = 51; i <= 150; i++)
            {
                if (MyCalculate.IsMxMyMzMore(i, maxX))
                {
                    maxX = i;
                }
            }
            maxDiameter = Math.Pow((32 * Math.Sqrt(MyCalculate.SumOfSquaresMxyz(maxX))) / (pi * permissibleStress), 1 / 3.0);
            diameter[3] = maxDiameter * 1000;
            g.DrawString("Φ3≥" + Math.Round(maxDiameter * 1000, 2) + "mm    在 x=" + maxX * a / 100.0 + "m 处应力最大",
                         font1, brush1, x1, y1 + 160);

            //设计直径4
            maxX = 0;
            for (int i = 1; i <= 50; i++)
            {
                if (MyCalculate.IsMxMyMzMore(i, maxX))
                {
                    maxX = i;
                }
            }
            for (int i = 450; i <= 500; i++)
            {
                if (MyCalculate.IsMxMyMzMore(i, maxX))
                {
                    maxX = i;
                }
            }
            maxDiameter = Math.Pow((32 * Math.Sqrt(MyCalculate.SumOfSquaresMxyz(maxX))) / (pi * permissibleStress), 1 / 3.0);
            diameter[4] = maxDiameter * 1000;
            g.DrawString("Φ4≥" + Math.Round(maxDiameter * 1000, 2) + "mm    在 x=" + maxX * a / 100.0 + "m 处应力最大",
                         font1, brush1, x1, y1 + 200);

            g.DrawString("之后根据比例关系得(这部分不同人有不同理解):", font2, brush1, x1, y1 + 240);
            int diameterStatus = 1;

            tempDiameter[1] = MyCalculate.NearestMoreEvenNumber(diameter[1]) - 2;
            while (diameterStatus != 4)
            {
                tempDiameter[1] += 2;
                if (tempDiameter[1] / 1.1 >= diameter[2])
                {
                    tempDiameter[2] = MyCalculate.NearestMoreEvenNumber(tempDiameter[1] / 1.1);
                    diameterStatus  = 2;
                }
                if (diameterStatus == 2 && tempDiameter[2] / 1.1 >= diameter[3])
                {
                    tempDiameter[3] = MyCalculate.NearestMoreEvenNumber(tempDiameter[2] / 1.1);
                    diameterStatus  = 3;
                }
                if (diameterStatus == 3 && tempDiameter[3] / 1.1 >= diameter[4])
                {
                    tempDiameter[4] = MyCalculate.NearestMoreEvenNumber(tempDiameter[3] / 1.1);
                    diameterStatus  = 4;
                }
            }
            g.DrawString("Φ1≥ " + tempDiameter[1] + " mm" +
                         "\n\nΦ2≥ " + tempDiameter[2] + " mm" +
                         "\n\nΦ3≥ " + tempDiameter[3] + " mm" +
                         "\n\nΦ4≥ " + tempDiameter[4] + " mm",
                         font2, brush1, x1, y1 + 270);
            textBox13.Text = "" + tempDiameter[1];
        }
Example #2
0
        private void tabPage6_Paint(object sender, PaintEventArgs e)
        {
            Graphics g = e.Graphics;
            int      x = 0;

            switch (comboBox1.SelectedIndex)
            {
            case 0: x = 0; break;

            case 1: x = 50; break;

            case 2: x = 150; break;

            case 3: x = 300; break;

            case 4: x = 350; break;

            case 5: x = 450; break;

            case 6: x = 500; break;
            }
            g.DrawString("Mx= " + Math.Round(mx[x], 2) +
                         " N•m     My= " + Math.Round(my[x], 2) + " N•m     Mz= " + Math.Round(mz[x], 2) + " N•m",
                         font1, brush1, 100, 100);
            if (status6 == 1)
            {
                double W    = (pi * diameter2 * diameter2 * diameter2) / 32;
                double aMax = (Math.Sqrt(my[x] * my[x] + mz[x] * mz[x])) / W;
                double Wp   = (pi * diameter2 * diameter2 * diameter2) / 16;
                double tMax = mx[x] / Wp;
                double tm   = tMax / 2;
                double ta   = tMax / 2;
                double na   = (a_1 * Ea * B) / (Ka * aMax);
                double nt   = t_1 / (Kt * ta / (Et * B) + sensitivity * tm);
                double nat  = (na * nt) / Math.Sqrt(na * na + nt * nt);
                double a_r3 = Math.Sqrt(MyCalculate.SumOfSquaresMxyz(x)) / W;
                double nat1 = a_s / a_r3;
                string isOk = "";
                if (double.IsNaN(nat) || double.IsNaN(nat1))
                {
                    if (nt > safeN)
                    {
                        isOk = "是";
                    }
                    else
                    {
                        isOk = "否";
                    }
                }
                else
                {
                    if (nat > safeN && nat1 > safeN)
                    {
                        isOk = "是";
                    }
                    else
                    {
                        isOk = "否";
                    }
                }

                g.DrawString("σmax= " + Math.Round(aMax / 1000000, 2) + " Mpa" + "     τmax= " + Math.Round(tMax / 1000000, 2) + " Mpa\n\n" +
                             "Na= " + Math.Round(na, 2) + "    Nt= " + Math.Round(nt, 2) + "    Nat= " + Math.Round(nat, 2) + "    Nat′= " + Math.Round(nat1, 2) +
                             "\n\n该截面是否满足强度要求: " + isOk,
                             font2, brush1, 100, 300);
                status6 = 0;
            }
        }