The elastic stiffness of a material is defined by the elastic modulus, Poisson's ratio, Lame's first parameter, bulk modulus, shear modulus and p-wave modulus. Calculate material Poisson ratio, bulk modulus, Lames first parameter, shear modulus and p-wave modulus. These six properties are interdependent so that if any two properties are known the other four properties can be calculated.
Calculate true stress and strain, and engineering stress and strain.
Engineering stress and strain are calculated from the unstressed material length and cross section area. True stress and strain are calculated from the deformed length and cross section area.