protected override double Get_phiM_n()
{
double C_b = Get_C_b();
SteelSolidSection SectionSolid = new SteelSolidSection(rectangle, Material);
var beam = new BeamSolid(SectionSolid, null, MomentAxis.XAxis);
var phiM_n = beam.GetFlexuralLateralTorsionalBucklingStrength(C_b, c, FlexuralCompressionFiberPosition.Top, FlexuralAndTorsionalBracingType.NoLateralBracing).Value;
return(phiM_n);
}
public ISteelBeamFlexure GetBeam(ISection Shape, ISteelMaterial Material, ICalcLog Log, MomentAxis MomentAxis,
FlexuralCompressionFiberPosition compressionFiberPosition, bool IsRolledMember = true)
{
ISteelBeamFlexure beam = null;
if (MomentAxis == Common.Entities.MomentAxis.XAxis)
{
if (Shape is ISectionI)
{
ISectionI IShape = Shape as ISectionI;
SteelSectionI SectionI = new SteelSectionI(IShape, Material);
if (IShape.b_fBot == IShape.b_fTop && IShape.t_fBot == IShape.t_fTop) // doubly symmetric
{
DoublySymmetricIBeam dsBeam = new DoublySymmetricIBeam(SectionI, Log, compressionFiberPosition, IsRolledMember);
beam = dsBeam.GetBeamCase();
}
else
{
SinglySymmetricIBeam ssBeam = new SinglySymmetricIBeam(SectionI, IsRolledMember, compressionFiberPosition, Log);
beam = ssBeam.GetBeamCase();
}
}
else if (Shape is ISolidShape)
{
ISolidShape solidShape = Shape as ISolidShape;
SteelSolidSection SectionSolid = new SteelSolidSection(solidShape, Material);
beam = new BeamSolid(SectionSolid, Log, MomentAxis);
}
else if (Shape is ISectionChannel)
{
ISectionChannel ChannelShape = Shape as ISectionChannel;
SteelChannelSection ChannelSection = new SteelChannelSection(ChannelShape, Material);
beam = new BeamChannel(ChannelSection, IsRolledMember, Log);
IShapeCompactness compactness = new ShapeCompactness.ChannelMember(ChannelSection, IsRolledMember, compressionFiberPosition);
CompactnessClassFlexure flangeCompactness = compactness.GetFlangeCompactnessFlexure();
CompactnessClassFlexure webCompactness = compactness.GetWebCompactnessFlexure();
if (flangeCompactness != CompactnessClassFlexure.Compact || webCompactness != CompactnessClassFlexure.Compact)
{
throw new Exception("Channels with non-compact and slender flanges or webs are not supported. Revise input.");
}
}
else if (Shape is ISectionPipe)
{
ISectionPipe SectionPipe = Shape as ISectionPipe;
SteelPipeSection PipeSection = new SteelPipeSection(SectionPipe, Material);
beam = new BeamCircularHss(PipeSection, Log);
}
else if (Shape is ISectionTube)
{
ISectionTube TubeShape = Shape as ISectionTube;
SteelRhsSection RectHSS_Section = new SteelRhsSection(TubeShape, Material);
beam = new BeamRectangularHss(RectHSS_Section, compressionFiberPosition, MomentAxis, Log);
}
else if (Shape is ISectionBox)
{
ISectionBox BoxShape = Shape as ISectionBox;
SteelBoxSection BoxSection = new SteelBoxSection(BoxShape, Material);
beam = new BeamRectangularHss(BoxSection, compressionFiberPosition, MomentAxis, Log);
}
else if (Shape is ISectionTee)
{
ISectionTee TeeShape = Shape as ISectionTee;
SteelTeeSection TeeSection = new SteelTeeSection(TeeShape, Material);
beam = new BeamTee(TeeSection, Log);
}
else if (Shape is ISectionAngle)
{
ISectionAngle Angle = Shape as ISectionAngle;
SteelAngleSection AngleSection = new SteelAngleSection(Angle, Material);
beam = new BeamAngle(AngleSection, Log, Angle.AngleRotation, MomentAxis, Angle.AngleOrientation);
}
else if (Shape is ISolidShape)
{
ISolidShape SolidShape = Shape as ISolidShape;
SteelSolidSection SolidSection = new SteelSolidSection(SolidShape, Material);
beam = new BeamSolid(SolidSection, Log, MomentAxis);
}
else
{
throw new Exception("Specified section type is not supported for this node.");
}
}
else // weak axis
{
if (Shape is ISectionI)
{
ISectionI IShape = Shape as ISectionI;
SteelSectionI SectionI = new SteelSectionI(IShape, Material);
beam = new BeamIWeakAxis(SectionI, IsRolledMember, Log);
}
else
{
throw new NotImplementedException();
}
}
return(beam);
}
