Author

Xiang Zhong

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Preprint Sep 2026

A time explicit multiscale framework for heterogeneous elastic wave propagation based on multipoint stress discretization

Simulating elastic wave propagation in heterogeneous media presents significant mathematical and computational challenges, since resolving fine-scale material variations requires extremely fine spatial discretizations, while mixed stress--displacement formulations typically lead to large saddle-point systems that are n...

Xiang Zhong, Eric T.Chung, Shu-Bin Fu · 0 citations

Preprint Sep 2026

A Kernel-Aware Two-Grid Preconditioner for Cell-Centered Nearly Incompressible Elasticity

Nearly incompressible elasticity is often discretized by mixed methods to avoid locking, but the resulting saddle-point systems can be expensive to solve. We consider a weakly symmetric multipoint stress discretization whose stress and rotation unknowns can be eliminated independently over vertex interaction regions, l...

Shu-Bin Fu, Xiang Zhong · 0 citations