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• W3131608052 startingPage "113563" @default.
• W3131608052 abstract "This paper proposes a new methodology for computing boundary sensitivities in level set topology optimization using the discrete adjoint method. The adjoint equations are constructed using the discretized governing field equations. The objective function is differentiated with respect to the boundary point movement for computing boundary sensitivities using the discrete adjoint equations. For this purpose, we present a novel approach where we perturb the boundary implicitly by locally modifying the level set function around a given boundary point. These local perturbations are combined with the derivatives of the objective function with respect to the volume fractions of individual elements to compute boundary sensitivities. This enables the circumvention of smoothing or interpolation methods typically used in level set topology optimization to compute sensitivities; and improves the accuracy of the sensitivities and the convergence characteristics. We demonstrate the effectiveness of our method in the context of stress minimization and stress constrained topology optimization problems for orthogonal bracket design under multiple load cases." @default.
• W3131608052 created "2021-03-01" @default.
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• W3131608052 date "2021-04-01" @default.
• W3131608052 modified "2023-10-10" @default.
• W3131608052 title "A discrete adjoint based level set topology optimization method for stress constraints" @default.
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• W3131608052 doi "https://doi.org/10.1016/j.cma.2020.113563" @default.
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