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Structural Engineering and Mechanics Volume 96, Number 3, November10 2025 , pages 225-237 DOI: https://doi.org/10.12989/sem.2025.96.3.225 |
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Treatment of volumetric locking in the strain-smoothed 3-node triangular finite element |
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Hoontae Jung, Yoon Sung Jeong and Phill-Seung Lee
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| Abstract | ||
| In this study, we propose a method to alleviate the volumetric locking in the strain-smoothed 3-node triangular finite element. The strain-smoothed 3-node triangular finite element recently developed provides excellent performance. As Poisson's ratio close to 0.5, its predictive capability however deteriorates due to volumetric locking. To alleviate the volumetric locking, a node-wise smoothing process is employed only for volumetric strain while maintaining the formulation of the original strainsmoothed 3-node triangular finite element for deviatoric strain. The proposed strain-smoothed 3-node triangular element passes basic tests and exhibit alleviation of volumetric locking. Through various numerical problems, the performance of the proposed strain-smoothed 3-node triangular element is demonstrated. | ||
| Key Words | ||
| finite element analysis; solid elements; strain-smoothed element method; volumetric locking | ||
| Address | ||
| Hoontae Jung, Yoon Sung Jeong and Phill-Seung Lee: Department of Mechanical Engineering, Korean Advanced Institute for Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea | ||