public Force[] GetGlobalEquivalentNodalLoads(Element element)
{
if (element is FrameElement2Node)
{
var frElm = element as FrameElement2Node;
var l = (frElm.EndNode.Location - frElm.StartNode.Location).Length;
var w = GetLocalDistributedLoad(element as Element1D);
var localEndForces = new Force[2];
localEndForces[0] = new Force(w.X * l / 2, w.Y * l / 2, w.Z * l / 2, 0, -w.Z * l * l / 12.0, w.Y * l * l / 12.0);
localEndForces[1] = new Force(w.X * l / 2, w.Y * l / 2, w.Z * l / 2, 0, w.Z * l * l / 12.0, -w.Y * l * l / 12.0);
localEndForces = Extensions2.ApplyReleaseMatrixToEndForces(frElm, localEndForces);//applying release matrix to end forces
for (var i = 0; i < element.Nodes.Length; i++)
{
var frc = localEndForces[i];
localEndForces[i] =
new Force(
frElm.TransformLocalToGlobal(frc.Forces),
frElm.TransformLocalToGlobal(frc.Moments));
}
return(localEndForces);
}
return(element.GetGlobalEquivalentNodalLoads(this));
}
public Force[] GetGlobalEquivalentNodalLoads(Element element)
{
if (element is FrameElement2Node)
{
var e = element as FrameElement2Node;
var localForce = this.force;
if (this.coordinationSystem == CoordinationSystem.Global)
{
var tmp = e.TransformGlobalToLocal(localForce.Forces, localForce.Moments);
localForce.Forces = tmp[0];
localForce.Moments = tmp[1];
}
var buf = new Force[2];
buf[0] = new Force();
var l = (e.EndNode.Location - e.StartNode.Location).Length;
var a = distanseFromStartNode;
var b = l - a;
var mymy1 = localForce.My * b / (l * l) * (b - 2 * a);
var mymy2 = localForce.My * a / (l * l) * (a - 2 * b);
var myfz1 = 6 * localForce.My * a * b / (l * l * l);
var myfz2 = -myfz1;
var mzmz1 = localForce.Mz * b / (l * l) * (b - 2 * a);
var mzmz2 = localForce.Mz * a / (l * l) * (a - 2 * b);
var mzfy1 = -6 * localForce.Mz * a * b / (l * l * l);
var mzfy2 = -mzfy1;
var fzmy1 = -localForce.Fz * a * b * b / (l * l);
var fzmy2 = localForce.Fz * a * a * b / (l * l);
var fzfz1 = localForce.Fz * b * b / (l * l * l) * (3 * a + b);
var fzfz2 = localForce.Fz * a * a / (l * l * l) * (3 * b + a);
var fymz1 = localForce.Fy * a * b * b / (l * l);
var fymz2 = -localForce.Fy * a * a * b / (l * l);
var fyfy1 = localForce.Fy * b * b / (l * l * l) * (3 * a + b);
var fyfy2 = localForce.Fy * a * a / (l * l * l) * (3 * b + a);
var fxfx1 = localForce.Fx * b / l;
var fxfx2 = localForce.Fx * a / l;
var mxmx1 = localForce.Mx * b / l;
var mxmx2 = localForce.Mx * a / l;
var f1 = new Force(
fxfx1,
mzfy1 + fyfy1,
fzfz1 + myfz1,
mxmx1,
mymy1 + fzmy1,
mzmz1 + fymz1
);
var f2 = new Force(
fxfx2,
mzfy2 + fyfy2,
fzfz2 + myfz2,
mxmx2,
mymy2 + fzmy2,
mzmz2 + fymz2
);
var localEndForces = new Force[2];
localEndForces[0] = f1;
localEndForces[1] = f2;
localEndForces = Extensions2.ApplyReleaseMatrixToEndForces(e, localEndForces);//applying release matrix to end forces
var vecs = new Vector[] { localEndForces[0].Forces, localEndForces[0].Moments, localEndForces[1].Forces, localEndForces[1].Moments };
var tvecs = e.TransformLocalToGlobal(vecs);
buf[0] = new Force(tvecs[0], tvecs[1]);
buf[1] = new Force(tvecs[2], tvecs[3]);
return(buf);
}
throw new NotImplementedException();
}
