Least-squares finite strain hexahedral element/constitutive coupling based on parametrized configurations and the Löwdin frame
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- 作者：P. Areiasa ; d ; C.A. Mota Soaresb ; T. Rabczukc
- 关键词：Lö ; wdin frame ; Assumed-strain hexahedron ; Finite strains ; Constitutive integration
- 刊名：Finite Elements in Analysis & Design
- 出版年：2016
- 出版时间：January 2016
- 年：2016
- 卷：108
- 期：Complete
- 页码：96-109
- 全文大小：5288 K
文摘
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(First time) Use of least-square based strains in an 8 node (assumed-strain) hexahedron. Full finite strain formulation.
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(First time in a Hexahedron) Use of Löwdin frames and rotation based on these frames in a semi-implicit form.
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Analysis of null-space under satisfaction of constraints (Kirchhoff–Love and incompressibility).
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Semi-implicit constitutive integration.
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Basic linear problems as well as 5 finite-strain examples are inspected for correctness and competitive accuracy.