Computational approach to localization using global energy minimization

Chen, G., Baker, G., & Hunt, G.W. (2000) Computational approach to localization using global energy minimization. Computers & Structures, 78(4), pp. 529-536.

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Damage localization induced by strain softening can be predicted by the direct minimization of a global energy function. This article concerns the computational strategy for implementing this principle for softening materials such as concrete. Instead of using heuristic global optimization techniques, our strategies are a hybrid of local optimization methods with a path-finding approach to ensure a global optimum. With admissible nodal displacements being independent variables, it is easy to deal with the geometric (mesh) constraint conditions. The direct search optimization methods recover the localized solutions for a range of softening lattice models which are representative of quasi-brittle structures

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6 citations in Web of Science®

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ID Code: 28170
Item Type: Journal Article
Refereed: Yes
Keywords: cracks, fracture mechanics, minimisation, structural engineering computing
DOI: 10.1016/S0045-7949(00)00043-2
ISSN: 0045-7949
Divisions: Past > Institutes > Institute for Creative Industries and Innovation
Copyright Owner: Copyright 2000 Elsevier
Deposited On: 23 Oct 2009 01:28
Last Modified: 10 Aug 2011 14:49

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