E. Oñate, H. Tschöpe, P. Wriggers
The paper describes the extension of the critical
displacement method (CDM), presented by Oñate and Matias in 1996,
to the instability analysis of structures with non-linear material
behaviour using a simple damage model. The extended CDM is useful
to detect instability points using a prediction of the critical
displacement field and a secant load-displacement relationship
accounting for material non-linearities. Examples of application
of CDM to the instability analysis of structures using bar and
solid finite elements are presented.
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Published on 01/01/2001
DOI: 10.1108/02644400110387190Licence: CC BY-NC-SA license
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