Towards the Algorithmic Treatment of 3D Strong Discontinuities

Mergheim J, Kuhl E, Steinmann P (2007)

Publication Type: Journal article

Publication year: 2007

Journal

Communications in Numerical Methods in Engineering John Wiley & Sons, Ltd

Publisher: John Wiley & Sons, Ltd

Book Volume: 23

Pages Range: 97-108

DOI: 10.1002/cnm.885

Abstract

A geometrically non-linear finite element framework for the modelling of propagating discontinuities in three-dimensional continua is presented. By doubling the degrees of freedom in the discontinuous elements, the algorithm allows for arbitrary discontinuities which are not restricted to inter-element boundaries. The deformation field is interpolated independently on both sides of the discontinuity. In contrast to the X-FEM, the suggested approach thus relies exclusively on displacement degrees of freedom. On the discontinuity surface, the jump in the deformation is related to the cohesive tractions to account for smooth crack opening. Computational difficulties characteristic of three-dimensional crack propagation are addressed. The performance of the method is elaborated by means of a homogeneous three-dimensional tension problem and by means of the classical peel test. Copyright © 2006 John Wiley & Sons, Ltd.

Authors with CRIS profile

Julia Mergheim Ellen Kuhl
Paul Steinmann Lehrstuhl für Technische Mechanik (LTM)

Involved external institutions

Stanford University US United States (USA) (US)

How to cite

APA:

Mergheim, J., Kuhl, E., & Steinmann, P. (2007). Towards the Algorithmic Treatment of 3D Strong Discontinuities. Communications in Numerical Methods in Engineering, 23, 97-108. https://doi.org/10.1002/cnm.885

MLA:

Mergheim, Julia, Ellen Kuhl, and Paul Steinmann. "Towards the Algorithmic Treatment of 3D Strong Discontinuities." Communications in Numerical Methods in Engineering 23 (2007): 97-108.

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