//Direct Strength Method F.3-2
public AluminumLimitStateValue GetLocalBucklingStrength(double b, double t, LateralSupportType LateralSupportType,
FlexuralCompressionFiberPosition CompressionLocation, WeldCase WeldCase,
SubElementType SubElementType = SubElementType.Flat)
{
double S_xc = GetSectionModulusCompressionSxc(CompressionLocation);
double M_np = this.GetPlasticMoment();
FlexuralLocalBucklingElement LocalElement = new FlexuralLocalBucklingElement(this.Section.Material, b, t, LateralSupportType,
M_np, S_xc, WeldCase, SubElementType);
double F_b = LocalElement.GetCriticalStress();
double M_n = S_xc * F_b;
AluminumLimitStateValue Y = GetFlexuralYieldingStrength(CompressionLocation);
bool applicable;
double val;
if (M_n > Y.Value)
{
applicable = false;
val = -1.0;
}
else
{
applicable = true;
val = 0.9 * M_n;
}
return(new AluminumLimitStateValue(val, applicable));
}
public static Dictionary <string, object> FlexuralYieldingAndRupture(CustomProfile Shape, AluminumMaterial AluminumMaterial,
string FlexuralCompressionLocation = "Top", string Code = "AA2015")
{
//Default values
double phiM_n = 0;
FlexuralCompressionFiberPosition FlexuralCompression;
//Calculation logic:
bool IsValidStringCompressionLoc = Enum.TryParse(FlexuralCompressionLocation, true, out FlexuralCompression);
if (IsValidStringCompressionLoc == false)
{
throw new Exception("Flexural compression location selection not recognized. Check input string.");
}
AluminumFlexuralMember m = new AluminumFlexuralMember();
Kodestruct.Aluminum.AA.AA2015.AluminumMaterial a = new Kodestruct.Aluminum.AA.AA2015.AluminumMaterial(
AluminumMaterial.Alloy, AluminumMaterial.Temper, AluminumMaterial.ThicknessRange, AluminumMaterial.ProductType);
m.Section = new AluminumSection(a, Shape.Section);
AluminumLimitStateValue ls_Y = m.GetFlexuralYieldingStrength(FlexuralCompression);
AluminumLimitStateValue ls_R = m.GetFlexuralRuptureStrength();
phiM_n = Math.Min(ls_Y.Value, ls_R.Value);
return(new Dictionary <string, object>
{
{ "phiM_n", phiM_n }
});
}
public static Dictionary <string, object> FlexuralLocalBucklingCriticalStress(CustomProfile Shape, AluminumMaterial AluminumMaterial, double b, double t, string LateralSupportType,
string FlexuralCompressionLocation = "Top", string WeldCaseId = "NotAffected", string SectionSubElementType = "Flat", string Code = "AA2015")
{
//Default values
double F_b = 0;
//Calculation logic:
FlexuralCompressionFiberPosition FlexuralCompression;
//Calculation logic:
bool IsValidStringCompressionLoc = Enum.TryParse(FlexuralCompressionLocation, true, out FlexuralCompression);
if (IsValidStringCompressionLoc == false)
{
throw new Exception("Flexural compression location selection not recognized. Check input string.");
}
Kodestruct.Aluminum.AA.Entities.Enums.LateralSupportType LateralSupportTypeParsed;
bool IsValidLateralSupportType = Enum.TryParse(LateralSupportType, true, out LateralSupportTypeParsed);
if (IsValidLateralSupportType == false)
{
throw new Exception("Failed to convert string. LateralSupportType shall be OneEdge or BothEdges. Please check input");
}
WeldCase WeldCaseParsed;
bool IsValidWeldCase = Enum.TryParse(WeldCaseId, true, out WeldCaseParsed);
if (IsValidWeldCase == false)
{
throw new Exception("Failed to convert string. WeldCase shall be NotAffected or WeldAffected. Please check input");
}
SubElementType SubElementType;
bool IsValidInputString = Enum.TryParse(SectionSubElementType, true, out SubElementType);
if (IsValidInputString == false)
{
throw new Exception("Failed to convert string. Currently supported value is Flat. Please check input");
}
AluminumFlexuralMember m = new AluminumFlexuralMember();
Kodestruct.Aluminum.AA.AA2015.AluminumMaterial a = new Kodestruct.Aluminum.AA.AA2015.AluminumMaterial(
AluminumMaterial.Alloy, AluminumMaterial.Temper, AluminumMaterial.ThicknessRange, AluminumMaterial.ProductType);
m.Section = new AluminumSection(a, Shape.Section);
AluminumLimitStateValue ls_LB = m.GetLocalBucklingFlexuralCriticalStress(b, t, LateralSupportTypeParsed, FlexuralCompression, WeldCaseParsed, SubElementType);
F_b = ls_LB.Value;
return(new Dictionary <string, object>
{
{ "F_b", F_b }
});
}
