Contents Autodyn User Subroutine Modules | 5.12. Strength Model Variables | Print page 5.12.4. Steinberg-Guinan Strength ModelTo access local dataUSE matdef USE str_steinb SGYMAXMaximum yield stressSGHCONHardening constantSGHEXPHardening exponentSGHGDPDerivative, dG/dPSGHGDTDerivative, dG/dTSGHYDPDerivative, dY/dP « 5.12.3. Zerilli-Armstrong Strength Model 5.12.5. Cowper Symonds Strength Model »