The Proceedings of The Computational Mechanics Conference
Online ISSN : 2424-2799
2023.36
Session ID : OS-1601
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Nearly Incompressible Large Deformation Analysis using 4-node Tetrahedral Edge Center-based Strain Smoothing Element (EC-SSE-T4)
*Yuki ONISHI
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Abstract

A new finite element formulation based on the edge center-based strain smoothing element using 4-node tetrahedral mesh (EC-SSE-T4) is presented for large deformation analysis of nearly incompressible solids. The present method combines EC-SSE-T4 and the cyclic smoothing technique using the selective reduced integration (SRI) to avoid numerical issues caused by incompressibility. EC-SSE-T4 helps to obtain accurate deviatoric strain/stress distributions, whereas the cyclic smoothing technique helps to suppress pressure checkerboarding; then, the volumetric locking is resolved by the SRI.

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© 2023 The Japan Society of Mechanical Engineers
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