Issue link: https://resources.randsim.com/i/1504493
81 ©2023 ANSYS, Inc. Algorithmic Improvements of the EDP Cap Model • Redefinition of expansion cap function - smooth and convex yield surface - no additional parameters required - introduces constraint on parameter • Improvements in the stress calculation procedure - single surface closest point return mapping - consistent handling of strength evolution - Goldstein-Armijo line-search for yield function value - local sub-stepping algorithm (non-convergence) • Stability of the EDP Cap stress calculation has significantly improved - larger time steps are possible - less "stress returning does not converge" warnings settling simulation original model failed to converge (395 iterations) improved model converges successfully (76 iterations)