/// <summary>
/// Combine weld elements from all lines into a single collection.
/// </summary>
/// <returns></returns>
private List <FilletWeldElement> GetWeldElements()
{
List <FilletWeldElement> weldPoints = new List <FilletWeldElement>();
foreach (var line in this.Lines)
{
foreach (var weldElem in line.WeldElements)
{
FilletWeldElement el = weldElem as FilletWeldElement;
if (el != null)
{
weldPoints.Add(el);
}
}
}
return(weldPoints);
}
protected override double GetElementForce(ILocationArrayElement element, Point2D center, ILocationArrayElement controllingWeld, double angle)
{
FilletWeldElement el = element as FilletWeldElement;
FilletWeldElement cp = controllingWeld as FilletWeldElement;
double elementForce = 0;
if (el != null && cp != null)
{
double theta = el.GetAngleTheta(center);
//this weld actual deformation
double Delta_r = el.DistanceFromCentroid * (cp.LimitDeformation / cp.DistanceFromCentroid);
//this weld ultimate deformation
double pi = Delta_r / el.UltimateLoadDeformation;
//double pi = Delta_r / el.LimitDeformation;
//calculate element force
elementForce = el.CalculateNominalShearStrength(pi, theta);
}
return(elementForce);
}
/// <summary>
/// Finds the controlling element in the weld group.
/// </summary>
/// <param name="Center">Instantaneous center (IC) of rotation.</param>
/// <returns></returns>
protected override ILocationArrayElement FindUltimateDeformationElement(Point2D Center)
{
FilletWeldElement governingElement = null;
double DeltaMaxToRMin = double.PositiveInfinity;
foreach (var we in WeldElements)
{
double DeltaFracture_n = GetElementFractureDeformation(we.LegLength, we.GetAngleTheta(Center));
double DeltaUltimate_n = GetElementUltimateForceDeformation(we.LegLength, we.GetAngleTheta(Center));
double rn = we.GetDistanceToPoint(Center);
//store ultmate deformation and distance to IC for further use.
we.LimitDeformation = DeltaFracture_n;
we.UltimateLoadDeformation = DeltaUltimate_n;
we.DistanceFromCentroid = rn;
if (DeltaFracture_n / rn < DeltaMaxToRMin)
{
DeltaMaxToRMin = DeltaFracture_n / rn;
governingElement = we;
}
}
return(governingElement);
}
protected override void CalculateElements()
{
WeldElements = new List <IWeldElement>();
double dx = NodeJ.X - NodeI.X;
double dy = NodeJ.Y - NodeI.Y;
Vector3 seg = new Vector3(dx, dy, 0);
int N = NumberOfSubdivisions;
double segDx;
double segDy;
segDx = dx / N;
segDy = dy / N;
for (int i = 0; i < NumberOfSubdivisions; i++)
{
Point2D stPt = new Point2D(NodeI.X + i * segDx, NodeI.Y + i * segDy);
Point2D enPt = new Point2D(NodeI.X + (i + 1) * segDx, NodeI.Y + (i + 1) * segDy);
//Need to change this to be independent of fillet weld type
FilletWeldElement weld = new FilletWeldElement(stPt, enPt, Leg, ElectrodeStrength, IsLoadedOutOfPlane);
WeldElements.Add(weld);
}
}