protected override double GetV_m(double V_mt, double V_mb, double mu, double nu)
{
double V_m;
double V_m1 = V_mt + V_mb;
double V_pt = GetV_pt();
double V_mtSH = GetV_mtSH(V_pt);
double V_cBar1 = V_pt * (mu / nu - 1.0);
V_cBar1 = V_cBar1 < 0 ? 0 :V_cBar1;
double V_cBar2 = V_mtSH - V_pt;
V_cBar2 = V_cBar2 < 0 ? 0 : V_cBar2;
double V_cBar = Math.Min(V_cBar1, V_cBar2);
ShearMemberFactory f = new ShearMemberFactory();
//Refine this in future to reflect more possible cases
double h = Section.d;
double t_w = Section.t_w;
double E = 29000;
double a = 3 * h; // no stiffeners are accounted here, arbitrarily set the stiffener spacing
IShearMember UnperforatedShape = f.GetShearMemberNonCircular(ShearNonCircularCase.MemberWithoutStiffeners,
h, t_w, a, F_y, E);
double V_pBar = UnperforatedShape.GetShearStrength();
double V_m2 = 2.0 / 3.0 * V_pBar + V_cBar;
V_m = Math.Min(V_m1, V_m2);
//double V_cBar = V_pt
return(V_m);
}
public static Dictionary <string, object> ShearStrengthNonCircular(string ShearCase, double F_y, double t_w, double h, double a_s = 0.0, double E = 29000, string Code = "AISC360-10")
{
//Default values
double phiV_n = 0;
//Calculation logic:
ShearMemberFactory factory = new ShearMemberFactory();
aisc.ShearNonCircularCase shearCase;
bool IsValidString = Enum.TryParse(ShearCase, true, out shearCase);
if (IsValidString == true)
{
IShearMember member = factory.GetShearMemberNonCircular(shearCase, h, t_w, a_s, F_y, E);
phiV_n = member.GetShearStrength();
}
else
{
throw new Exception("Invalid case selection for non-circular section.");
}
return(new Dictionary <string, object>
{
{ "phiV_n", phiV_n }
});
}
public void ShearBeamIShapeReturnsValue()
{
double h = 26.3;
double t_w = 1.04;
double a = 0;
double F_y = 50.0;
double E = 29000;
ShearMemberFactory factory = new ShearMemberFactory();
IShearMember member = factory.GetShearMemberNonCircular(ShearNonCircularCase.MemberWithoutStiffeners, h, t_w, a, F_y, E);
double phiV_n = member.GetShearStrength();
double refValue = 821.0;
double actualTolerance = EvaluateActualTolerance(phiV_n, refValue);
Assert.LessOrEqual(actualTolerance, tolerance);
}