public static void testInternalForce_Console()
{
var model = new Model();
var ndes = new Node[] { new Node(0, 0, 0), new Node(3, 0, 0) };
var h = UnitConverter.In2M(4);
var w = UnitConverter.In2M(4);
var e = UnitConverter.Psi2Pas(20e4);
var a = h * w;
var iy = h * h * h * w / 12;
var iz = w * w * w * h / 12;
var j = iy + iz;
var sec = new Sections.UniformParametric1DSection(a = 1, iy = 1, iz = 1, j = 1);
var mat = UniformIsotropicMaterial.CreateFromYoungPoisson(e = 1, 0.25);
var elm = new BarElement(ndes[0], ndes[1])
{
Material = mat, Section = sec, Behavior = BarElementBehaviours.FullFrame
};
//var elm2 = new BarElement(ndes[1], ndes[2]) { Material = mat, Section = sec, Behavior = BarElementBehaviours.FullFrame };
model.Elements.Add(elm);
model.Nodes.Add(ndes);
ndes[0].Constraints = Constraints.Fixed;
ndes[1].Loads.Add(new NodalLoad(new Force(1, 0, 1, 0, 0, 0)));
model.Solve_MPC();
var tr = elm.GetTransformationManager();
var d1 = tr.TransformLocalToGlobal(elm.GetInternalDisplacementAt(1 - 1e-10, LoadCase.DefaultLoadCase));
var d2 = ndes[1].GetNodalDisplacement(LoadCase.DefaultLoadCase);
var frc = elm.GetInternalForceAt(-1, LoadCase.DefaultLoadCase);
var gfrc = elm.GetTransformationManager().TransformLocalToGlobal(frc);
var f0 = ndes[0].GetSupportReaction();
}
public static ValidationResult TestFixedEndMoment_uniformLoad()
{
var buff = new ValidationResult();
buff.Title = "Test #1 for UniformLoad on BarElement";
buff.Span.Add("p").Text("endforce from uniformload should be statically in equiblirium with uniform load");
var elm = new BarElement(new Node(0, 0, 0), new Node(8.66, 0, 5));
elm.Behavior = BarElementBehaviours.FullFrame;
var ld = new Loads.UniformLoad();
ld.Magnitude = 1;//*Math.Sqrt(2);
ld.Direction = Vector.K;
ld.CoordinationSystem = CoordinationSystem.Global;
elm.Loads.Add(ld);
var loads = elm.GetGlobalEquivalentNodalLoads(ld);
{//test 1 : static balance
var l = (elm.Nodes[1].Location - elm.Nodes[0].Location);
var totEndForces = new Force();
for (int i = 0; i < loads.Length; i++)
{
totEndForces += loads[i].Move(elm.Nodes[i].Location, elm.Nodes[0].Location);
}
var d = l / 2;
var gDir = ld.Direction;
if (ld.CoordinationSystem == CoordinationSystem.Local)
{
gDir = elm.GetTransformationManager().TransformLocalToGlobal(ld.Direction);
}
var cos = (1 / (d.Length * gDir.Length)) * Vector.Dot(d, gDir);
var f_mid = gDir * ld.Magnitude * (l.Length);//uniform load as concentrated load at middle
var m = Vector.Cross(d, f_mid);
var expectedForce = new Force(f_mid, m);
var zero = totEndForces - expectedForce;
buff.ValidationFailed = !zero.Forces.Length.FEquals(0, epsilon) || !zero.Moments.Length.FEquals(0, epsilon);
}
return(buff);
}
private void AddBarElementLoad(MeshBuilder bldr, BarElement elm, Point[] localPoints)
{
var n = SamplingCount;
var diagramPoints = new Point[n]; //Y=Fx or Fy or etc
var baseDiagramPoints = new Point[n]; //Y=0
#region calculating the graph nodes
var delta = (elm.EndNode.Location - elm.StartNode.Location).Length / (SamplingCount - 1);
var xs = Enumerable.Range(0, SamplingCount).Select(i => i * delta).ToList();
var st = elm.StartNode.Location;
var tr = elm.GetTransformationManager();
for (var i = 0; i < n; i++)
{
var x = delta * i;
var localPoint = localPoints[i];//new Vector(x, y*scale, z*scale);
var globalPoint = st + tr.TransformLocalToGlobal((Vector)localPoint);
var globalBase = st + tr.TransformLocalToGlobal(new Vector(x, 0, 0));
diagramPoints[i] = globalPoint;
baseDiagramPoints[i] = globalBase;
}
#endregion
for (var i = 0; i < n - 1; i++)
{
var p1 = baseDiagramPoints[i];
var p2 = baseDiagramPoints[i + 1];
var p3 = diagramPoints[i];
var p4 = diagramPoints[i + 1];
var p13d = new Point3D(p1.X, p1.Y, p1.Z);
var p23d = new Point3D(p2.X, p2.Y, p2.Z);
var p33d = new Point3D(p3.X, p3.Y, p3.Z);
var p43d = new Point3D(p4.X, p4.Y, p4.Z);
bldr.AddTriangle(p13d, p23d, p33d);
bldr.AddTriangle(p33d, p23d, p43d);
}
}
private void AddBarElement(MeshBuilder bldr, BarElement elm)
{
PolygonYz section = null;
var r = ElementVisualThickness / 2;
if (elm.Section is Sections.UniformParametric1DSection)
{
section = new PolygonYz(
new PointYZ(-r, -r),
new PointYZ(-r, r),
new PointYZ(r, r),
new PointYZ(r, -r),
new PointYZ(-r, -r));
}
else
{
section = new PolygonYz((elm.Section as Sections.UniformGeometric1DSection).Geometry);
}
var tr = elm.GetTransformationManager();
for (var i = 0; i < section.Count - 1; i++)
{
var v1 = new Vector(0, section[i].Y, section[i].Z);
var v2 = new Vector(0, section[i + 1].Y, section[i + 1].Z);
var p1 = elm.StartNode.Location + tr.TransformLocalToGlobal(v1);
var p2 = elm.StartNode.Location + tr.TransformLocalToGlobal(v2);
var v = elm.EndNode.Location - elm.StartNode.Location;
if (Math.Abs(v.Z) < 0.01)
{
Guid.NewGuid();
}
var p3 = p1 + v;
var p4 = p2 + v;
var p13d = new Point3D(p1.X, p1.Y, p1.Z);
var p23d = new Point3D(p2.X, p2.Y, p2.Z);
var p33d = new Point3D(p3.X, p3.Y, p3.Z);
var p43d = new Point3D(p4.X, p4.Y, p4.Z);
bldr.AddTriangle(p13d, p33d, p23d);
bldr.AddTriangle(p43d, p23d, p33d);
}
}