/// <summary>
///
/// </summary>
/// <param name="ConnectorType">Connector type (e.g.DowelTypeFastenerInWoodToWoodConnection)</param>
/// <param name="E_m">Modulus of elasticity of main member</param>
/// <param name="A_m">Gross cross-sectional area of main member(s)</param>
/// <param name="E_s">Modulus of elasticity of side member</param>
/// <param name="A_s">Sum of gross cross-sectional areas of side member(s)</param>
/// <param name="D">Dowel-type fastener diameter</param>
/// <returns></returns>
public double GetGroupActionFactor(MechanicalConnectorTypeForGroupEffects ConnectorType,
double E_m, double A_m, double E_s, double A_s, double n, double s, double D = 0.25)
{
bool IsDowelTypeFastener = false;
if (ConnectorType == MechanicalConnectorTypeForGroupEffects.DowelTypeFastenerInWoodToMetalConnection ||
ConnectorType == MechanicalConnectorTypeForGroupEffects.DowelTypeFastenerInWoodToWoodConnection)
{
IsDowelTypeFastener = true;
}
double C_g;
if (IsDowelTypeFastener == true && D < 0.25)
{
C_g = 1.0;
}
else
{
double gamma = GetGamma(ConnectorType, D);
double R_EA = Math.Min(((E_s * A_s) / (E_m * A_m)), ((E_m * A_m) / (E_s * A_s)));
double u = 1 + gamma * ((s) / (2.0)) * ((1.0) / (E_m * A_m)) + (1.0 / (E_s * A_s));
double m = u - Math.Sqrt(Math.Pow(u, 2) - 1.0);
C_g = (((m * (1 - Math.Pow(m, 2))) / (n * ((1 + R_EA * Math.Pow(m, n)) * (1 + m) - 1 + Math.Pow(m, 2.0 * n))))) * (1);
}
return(C_g);
}
private double GetGamma(MechanicalConnectorTypeForGroupEffects ConnectorType, double D)
{
switch (ConnectorType)
{
case MechanicalConnectorTypeForGroupEffects.FourInchSplitRing:
return(500000.0);
break;
case MechanicalConnectorTypeForGroupEffects.ShearPlateConnector:
return(500000.0);
break;
case MechanicalConnectorTypeForGroupEffects.TwoAndHalfInchSplitRing:
return(400000.0);
break;
case MechanicalConnectorTypeForGroupEffects.TwoAndFiveEighthShearPlateConnectors:
return(400000.0);
break;
case MechanicalConnectorTypeForGroupEffects.DowelTypeFastenerInWoodToWoodConnection:
return(180000.0 * Math.Pow(D, 1.5));
break;
case MechanicalConnectorTypeForGroupEffects.DowelTypeFastenerInWoodToMetalConnection:
return(180000.0 * Math.Pow(D, 1.5));
break;
default:
throw new Exception("Unrecognized connector type.");
break;
}
}
