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Distributed Failure Analysis, Fallacies and Remedies

by Kaspar Willam, Univ of Colorado, Boulder, CO, USA,
Andreas Dietsche, Univ of Colorado, Boulder, CO, USA,
Guillermo Etse, Univ of Colorado, Boulder, CO, USA,
Paul Steinmann, Univ of Colorado, Boulder, CO, USA,



Document Type: Proceeding Paper

Part of: Engineering Mechanics

Abstract:

In the past, two distinctly different approaches - smeared and discrete failure descriptions have been utilised to capture failure mechanisms in solids and structures. These two approaches have converged to some degree, since localisation analysis of first order discontinuities does combine many ingredients of the two concepts in describing the transition from volume to surface dominated failure processes. In the following, two issues of failure analysis will be addressed, (i) the regularisation of first order discontinuities by nonlocal constitutive formulations or micropolar continuum theories, and (ii) the computational resolution of discontinuities within the solution domain in the case of localisation.

Subject Headings: Failure analysis | Material failures | Plastic analysis | Structural failures | Discontinuities | Continuum mechanics | Computer models

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