A GPU-accelerated framework for explicit finite element analysis with erosion contact
摘要
To address the computational demands of penetration-induced damage simulations, this paper presents a graphics processing unit (GPU)-accelerated framework for explicit finite element (FE) analysis with erosion contact. Leveraging stream concurrency and a thread-to-element mapping strategy, the framework enables efficient GPU-parallel computation for multiple element types. Key developments include a GPU-based surface reconstruction procedure for dynamically updating contact topology after element erosion, a lock-free bucket sorting strategy combined with a parallel local search for contact detection, and the parallelization of the defense node algorithm for contact force computation. The integrated framework has been applied to several engineering case studies, demonstrating substantial performance gains. Numerical experiments show that the approach achieves a maximum speedup of 85.37 relative to a serial CPU baseline and 12.09 compared to a 16-core parallel implementation, providing a practical and efficient tool for high-performance explicit FE simulations of penetration-induced damage.