Error indicators and adaptive remeshing in large deformation finite element analysis
Finite Elements in Analysis and Design
Superconvergence and the superconvergent patch recovery
Finite Elements in Analysis and Design - Special issue: Robert J. Melosh Medal Competition
The superconvergence patch recovery technique and data transfer operators in 3D plasticity problems
Finite Elements in Analysis and Design
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For nonlinear problems, it is shown that the accuracy and stability of superconvergent patch recovery (SPR) method can be remarkably improved through the modifications introduced in this paper. These modifications are (1) use of integration points as sampling points, (2) weighted average procedure and (3) introduction of additional nodes. They are validated through numerical investigations of several large deformation problems. Based on the modified SPR procedure, a new scheme for submodeling finite element analysis is developed. Comparison of the numerical results obtained from this new scheme and traditional method shows encouraging improvements.