Interface-Aware Neural Newton Preconditioning for Robust Cohesive Zone Model Simulations
Cohesive Zone Models (CZMs) are widely used to simulate interface fracture, delamination, adhesive failure, and fiber--matrix debonding in aerospace composite structures. In implicit quasi-static finite element analyses, cohesive softening may introduce negative interface tangents, solution jumps, and Newton-basin mismatch, so the previous converged state can become a poor initial guess for the next increment. This may lead to stagnation, wrong-branch convergence, or repeated step cuts. Existing remedies, including viscous regularization, path following, dynamic relaxation, and manual Newton--Raphson (NR) modification, either alter the effective response, increase cost, or rely on hand-cr...
| Authors | Zhangyong Liang, Huanhuan Gao |
|---|---|
| Primary category | cs.LG |
| Published | 30 June 2026 |
| Last updated at source | 1 July 2026 |
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