public double GetWebPlastificationFactorForTensionRpt(FlexuralCompressionFiberPosition compressionFiberPosition)
{
double Rpt = 0.0;
double Mp = GetMajorNominalPlasticMoment();
double Myt = GetTensionFiberYieldMomentMyt(compressionFiberPosition);
double hc = Gethc(compressionFiberPosition);
double tw = this.Gettw();
ShapeCompactness.IShapeMember compactness = new ShapeCompactness.IShapeMember(Section, IsRolledMember, compressionFiberPosition);
double lambdaWeb = compactness.GetWebLambda();
double lambdapw = compactness.GetWebLambda_p(StressType.Flexure);
double lambdarw = compactness.GetWebLambda_r(StressType.Flexure);
//double lambda = hc / tw;
double lambda = compactness.GetWebLambda();
if (lambda <= lambdapw)
{
Rpt = Mp / Myt; //(F4-16a)
}
else
{
Rpt = Mp / Myt - (Mp / Myt - 1) * ((lambda - lambdapw) / (lambdarw - lambdapw)); //(F4-16b)
}
return Rpt;
}
public double GetLambdaWeb()
{
double Lambda = 0.0;
compactness = new ShapeCompactness.IShapeMember
(this.Section, this.isRolledMember, FlexuralCompressionFiberPosition.Top);
// for web location of compression fiber does not matter
Lambda = compactness.GetWebLambda();
return Lambda;
}