Computational approach to localization using global energy minimization
UNSPECIFIED (2000) Computational approach to localization using global energy minimization. COMPUTERS & STRUCTURES, 78 (4). pp. 529-536. ISSN 0045-7949Full text not available from this repository.
Damage localization induced by strain softening can be predicted by the direct minimization of a global energy function [Baker G, Hunt GW. In: Bazant ZP, et al., editors. Damage of Quasi-brittle Structures. London: E and FN Spon, 1994. p. 387-94; Hunt GW, Baker G. J Mech Phys Solids 1995;43(7):1127-50]. 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 the quasi-brittle structures. (C) 2000 Elsevier Science Ltd. All rights reserved.
|Item Type:||Journal Article|
|Subjects:||Q Science > QA Mathematics > QA76 Electronic computers. Computer science. Computer software
T Technology > TA Engineering (General). Civil engineering (General)
|Journal or Publication Title:||COMPUTERS & STRUCTURES|
|Publisher:||PERGAMON-ELSEVIER SCIENCE LTD|
|Number of Pages:||8|
|Page Range:||pp. 529-536|
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