<abstract xmlns="http://www.w3.org/1999/xhtml"><p>In this paper, the earlier formulation of the eight-node hexahedral SFR8 element is extended in order to analyze material nonlinearities. This element stems from the so-called Space Fiber Rotation (SFR) concept which considers virtual rotations of a nodal fiber within the element that enhances the displacement vector approximation. The resulting mathematical model of the proposed SFR8 element and the classical associative plasticity model are implemented into a Fortran calculation code to account for small strain elastoplastic problems. The performance of this element is assessed by means of a set of nonlinear benchmark problems in which the development of the plastic zone has been investigated. The accuracy of the obtained results is principally evaluated with some reference solutions.</p></abstract>

In this paper, the earlier formulation of the eight-node hexahedral SFR8 element is extended in order to analyze material nonlinearities. This element stems from the so-called Space Fiber Rotation (SFR) concept which considers virtual rotations of a nodal fiber within the element that enhances the displacement vector approximation. The resulting mathematical model of the proposed SFR8 element and the classical associative plasticity model are implemented into a Fortran calculation code to account for small strain elastoplastic problems. The performance of this element is assessed by means of a set of nonlinear benchmark problems in which the development of the plastic zone has been investigated. The accuracy of the obtained results is principally evaluated with some reference solutions.

An Eight-Node Hexahedral Finite Element with Rotational DOFs for Elastoplastic Applications

Laboratoire de Génie Energétique et Matériaux (LGEM)

Acta Universitatis Sapientiae, Electrical and Mechanical Engineering

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

In this paper, the earlier formulation of the eight-node hexahedral SFR8 element is extended in order to analyze material nonlinearities. This element stems...

An Eight-Node Hexahedral Finite Element with Rotational DOFs for Elastoplastic Applications

Online veröffentlicht: 31. Dez. 2019

Seitenbereich: 54 - 66

Eingereicht: 21. Jan. 2019

DOI: https://doi.org/10.2478/auseme-2019-0005

Schlüsselwörter
3D finite elements, hexahedral elements, Space Fiber Rotation, elastoplasticity

© 2019 Ayoub Ayadi et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

An Eight-Node Hexahedral Finite Element with Rotational DOFs for Elastoplastic Applications

Online veröffentlicht: 31. Dez. 2019

Seitenbereich: 54 - 66

Eingereicht: 21. Jan. 2019

DOI: https://doi.org/10.2478/auseme-2019-0005

Schlüsselwörter3D finite elements, hexahedral elements, Space Fiber Rotation, elastoplasticity

© 2019 Ayoub Ayadi et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Schlüsselwörter
3D finite elements, hexahedral elements, Space Fiber Rotation, elastoplasticity