Influence of Weighted Gradients in Topology Optimization of Flexible Multibody Systems
First published in
Number in series
In: Nachbagauer, K., Held, A. (eds) Optimal Design and Control of Multibody Systems. IUTAM 2022. IUTAM Bookseries, vol 42. Springer, Cham. (2024-01-05)
Contribution to Conference
Symposium on Optimal Design and Control of Multibody Systems - Adjoint Methods, Alternatives, and Beyond, IUTAM 2022
Springer Nature Switzerland
This paper deals with a level set-based topology optimization of flexible bodies within flexible multibody systems. The required gradient is provided by an adjoint sensitivity analysis. In this work, a modified Solid Isotropic Material with Penalization (SIMP) method is applied, which helps to avoid numerical issues connected to spurious modes in dynamic problems. Nevertheless, the included parametrization factors lead to a weighted gradient. To test the validity of corresponding optimization results, differently weighted gradients are then used within the topology optimization of a flexible piston rod in a slider-crank mechanism. The obtained results show, among others, the range of appropriate weightings in the studied example.