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- W2754249311 abstract "A thermoplastic finite strain model is used to model heat generation due to plastic work. Isotropic hardening is used, where the mechanical dissipation acts as heat source in the heat equation. The multiplicative split of the deformation gradient makes it possible to separate plastic and elastic effects. The model is solved by using the Newmark time integration scheme with the finite element method using total Lagrangian formulation. The model is also aimed for implementation with gradient based topology optimization for finite strains with the objective to maximize the the plastic dissipation. The method of moving asymptotes (MMA) is used in the optimization to make the problem convex. The sensitivities required to form the gradient is calculated using the adjoint method where the sensitivities are derived for the thermoplastic case. Helmholtz’s partial differential equation is used for regularization and a Heaviside filter is used to make the topology more precise. (Less)" @default.
- W2754249311 created "2017-09-25" @default.
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- W2754249311 date "2017-01-01" @default.
- W2754249311 modified "2023-10-06" @default.
- W2754249311 title "Thermoplasticity in topology optimization based on finite strain" @default.
- W2754249311 hasPublicationYear "2017" @default.
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