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Decomposition method for solving optimal material orientation problems
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DOI：10.1016/j.compstruct.2010.01.015.png)
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Abstract
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The strain energy density is considered as a measure of the stiffness/flexibility of the composite structure. A methodology for determining the stationary points of the strain energy density in anisotropic solids is developed. The methodology proposed is based on new problem formulation, derivation and analysis of optimality conditions, and decomposition method. The optimal material orientation problem is formulated in terms of strains. The optimality conditions derived cover different material symmetries, linear and also some non-linear material models. The complexity analysis of the optimality conditions has been performed. The proposed approach allows to divide the solution of the optimal material orientation problem into less complicated subtasks. (C) 2010 Elsevier Ltd. All rights reserved.
Keywords:
Optimal material orientation
Optimality conditions in terms of strains
Decomposition method
Global extremes
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