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- W2079237179 abstract "Configuration optimization is a structural optimization method where the geometrical shape of the structures can be changed during the optimization process. Sensitivity informations are required in the general optimization and quite costly. Especially, they are extemely expensive in the structural optimization where the finite element analysis is utilized. Since the nodal coordinates are regarded as design variables in the configuration optimization, the sensitivities according to the nodal coordinates must be calculated. The characteristics of the configuration optimization is that the transformation matrix in the finite element analysis is a function of design variables. Thus the sensitivity calculation in the configuration optimization is even more complicated. For the efficient sensitivity calculations, various methods have been proposed. They are the analytic method (AM), overall finite difference method (OFD), and semi-analytic method (SM). The semi-analytic method consists of the forward and central difference approximation. This study has been conducted to choose an appropriate method by comparison based on the mathematical and numerical aspects. Some standard structural problems are selected for the evaluations." @default.
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- W2079237179 date "1997-06-01" @default.
- W2079237179 modified "2023-10-18" @default.
- W2079237179 title "Accuracy test of sensitivity analysis in the semi-analytic method with respect to configuration variables" @default.
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- W2079237179 doi "https://doi.org/10.1016/s0045-7949(96)00308-2" @default.
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