Combination of the critical displacement method with a damage model for structural instability analysis

E. Oñate; H. Tschöpe; Peter Wriggers

Combination of the critical displacement method with a damage model for structural instability analysis

E. Oñate^*, H. Tschöpe, Peter Wriggers

^*Corresponding author for this work

Institute of Mechanics and Computational Mechanics

Universitat Politècnica de Catalunya

Research output: Contribution to journal › Article › Research › peer review

Abstract

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.

Original language	English
Pages (from-to)	642-662
Number of pages	21
Journal	Engineering Computations (Swansea, Wales)
Volume	18
Issue number	3-4
Publication status	Published - 9 Aug 2001

Keywords

Finite element method
Structural defects

ASJC Scopus subject areas

Software
General Engineering
Computer Science Applications
Computational Theory and Mathematics

Cite this

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abstract = "The paper describes the extension of the critical displacement method (CDM), presented by O{\~n}ate 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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AU - Tschöpe, H.

AU - Wriggers, Peter

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N2 - 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.

AB - 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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KW - Structural defects

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Combination of the critical displacement method with a damage model for structural instability analysis

Abstract

Keywords

ASJC Scopus subject areas

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