Stress constrained thermo-elastic topology optimization with varying temperature fields via augmented topological sensitivity based level-set

03/28/2022
by   Shiguang Deng, et al.
0

Engineering structures must often be designed to resist thermally induced stresses. Significant progress has been made on the design of such structures through thermo-elastic topology optimization. However, a computationally efficient framework to handle stress-constrained large-scale problems is lacking. The main contribution of this paper is to address this limitation. In particular, a unified topological-sensitivity (TS) based level-set approach is presented in this paper for optimizing thermo-elastic structures subject to non-uniform temperatures. The TS fields for various thermo-elastic objectives are derived, and, to address multiple constraints, an augmented Lagrangian method is developed to explore Pareto topologies. Numerical examples demonstrate the capability of the proposed framework to solve large-scale design problems. Comparison is made between pure elastic problems, and its thermo-elastic counterpart, shedding light on the influence of thermo-elastic coupling on optimized topologies.

READ FULL TEXT

page 2

page 6

page 7

page 10

page 11

03/28/2022

Topology optimization under thermo-elastic buckling

The focus of this paper is on topology optimization of continuum structu...
03/28/2022

Multi-constrained topology optimization via the topological sensitivity

The objective of this paper is to introduce and demonstrate a robust met...
08/08/2021

Estimation of Elastic Behavior of Cast Metal Components Containing Process Induced Porosity

Significant progress has been made for assessing the influence of porosi...
03/28/2022

Multi-constrained 3D topology optimization via augmented topological level-set

The objective of this paper is to introduce and demonstrate a robust met...
06/23/2020

Large scale three-dimensional manufacturing tolerant stress-constrained topology optimization

In topology optimization, the treatment of stress constraints for very l...
12/26/2019

A connection between topological ligaments in shape optimization and thin tubular inhomogeneities

In this note, we propose a formal framework accounting for the sensitivi...

Please sign up or login with your details

Forgot password? Click here to reset