Pset_MaterialMechanical A set of mechanical material properties normally used for structural analysis purpose. It contains all properties which are independent of the actual material type. IfcMaterial IfcMaterial DynamicViscosity A measure of the viscous resistance of the material. Dynamic Viscosity YoungModulus A measure of the Young's modulus of elasticity of the material. Young Modulus ShearModulus A measure of the shear modulus of elasticity of the material. Shear Modulus PoissonRatio A measure of the lateral deformations in the elastic range. Poisson Ratio ThermalExpansionCoefficient A measure of the expansion coefficient for warming up the material about one Kelvin. Thermal Expansion Coefficient