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COBEM 2021
26th International Congress of Mechanical Engineering
BIDIRECTIONAL EVOLUTIONARY STRUCTURAL OPTIMIZATION FOR STRUCTURES UNDER MULTIPLE DYNAMIC LOADS
Submission Author:
Giovane Puglia , RS
Co-Authors:
Giovane Puglia, Thomas S Ribeiro, Herbert Gomes
Presenter: Giovane Puglia
doi://10.26678/ABCM.COBEM2021.COB2021-1301
Abstract
With the advancement of computational resources in engineering, the use of the topological optimization tools has become a constant in the day-to-day design of structures and parts. However, there is the need to maintain the level of reliability in optimized projects, since the final structure is optimally designed. Only in specific cases, the safety can be assured based on a single static loading case, being common the existence of multiple dynamic loads throughout the part’s service life. In this work, a code for topological optimization is developed in order to account multiple dynamic loading cases, resulting in reliable optimized structures. The code is based on the BESO methodology, where the transient analysis performed by Newmark method. A strain energy based criteria and the concept of dynamic equivalent static loading is used to perform the optimization. Examples from the literature are used to validate the developed algorithm, demonstrating the importance and the effect of these loads on the final topology of the structure.
Keywords
Topological Optimization, multiple and dynamics loads, finite elements BESO methodology, solid mechanics
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