Least-squares finite strain hexahedral element/constitutive coupling based on parametrized configurations and the Löwdin frame
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文摘

(First time) Use of least-square based strains in an 8 node (assumed-strain) hexahedron. Full finite strain formulation.

(First time in a Hexahedron) Use of Löwdin frames and rotation based on these frames in a semi-implicit form.

Analysis of null-space under satisfaction of constraints (Kirchhoff–Love and incompressibility).

Semi-implicit constitutive integration.

Basic linear problems as well as 5 finite-strain examples are inspected for correctness and competitive accuracy.

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