Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Thermoelastic topology optimization with multiple materials for maximum stiffness using material interpolation scheme with penalization.
Submission Author:
Lidy Anaya Jaimes , SP
Co-Authors:
Renato Pavanello, William Vicente, Lidy Anaya Jaimes
Presenter: Lidy Anaya Jaimes
doi://10.26678/ABCM.COBEM2017.COB17-1524
Abstract
In several cases, thermal and mechanical loads occur simultaneously in a structure. Due to this load condition, the structural shape and topological design procedures become complex and sometimes nonintuitive. The thermal loads are dependent on the shape and topology of the structure, for this reason, the design must be an iterative procedure. In this paper, a method for the stiffness maximization subject to volume constraints on the phase materials considering thermomechanical loads is proposed, based on the thermo-elastic finite element theory and on the material interpolation schemes with penalization for multiple materials. The nodal thermal load of each element is applied only if the element is presented in the design domain. Therefore, the thermomechanical loads are considered design-dependent body loads. The optimization problem is solved using a Bi-directional evolutionary structural optimization method (BESO), with the soft kill approach. Two examples are presented to show the influence of the temperature changes and the mechanical loads on the obtained topologies.
Keywords
Bi-directional evolutionary structural optimization, BESO, Thermoelastic, Stiffness maximization
