%0 Conference Paper
%A Hailu Shimels, G.
%A Dereje Engida, W.
%A Fakhruldin Mohd, H.
%D 2017
%F scholars:8172
%I Institute of Physics Publishing
%K Boundary conditions; Computer aided engineering; Optimization; Shape optimization; Topology, Alternative solutions; Bench-mark problems; Comparative studies; Compliance; Compliance minimization; Convergence criterion; Stress constraints; Structural topology optimization, Structural optimization
%N 1
%R 10.1088/1757-899X/241/1/012003
%T A comparative study on stress and compliance based structural topology optimization
%U https://khub.utp.edu.my/scholars/8172/
%V 241
%X Most of structural topology optimization problems have been formulated and solved to either minimize compliance or weight of a structure under volume or stress constraints, respectively. Even if, a lot of researches are conducted on these two formulation techniques separately, there is no clear comparative study between the two approaches. This paper intends to compare these formulation techniques, so that an end user or designer can choose the best one based on the problems they have. Benchmark problems under the same boundary and loading conditions are defined, solved and results are compared based on these formulations. Simulation results shows that the two formulation techniques are dependent on the type of loading and boundary conditions defined. Maximum stress induced in the design domain is higher when the design domains are formulated using compliance based formulations. Optimal layouts from compliance minimization formulation has complex layout than stress based ones which may lead the manufacturing of the optimal layouts to be challenging. Optimal layouts from compliance based formulations are dependent on the material to be distributed. On the other hand, optimal layouts from stress based formulation are dependent on the type of material used to define the design domain. High computational time for stress based topology optimization is still a challenge because of the definition of stress constraints at element level. Results also shows that adjustment of convergence criterions can be an alternative solution to minimize the maximum stress developed in optimal layouts. Therefore, a designer or end user should choose a method of formulation based on the design domain defined and boundary conditions considered. © Published under licence by IOP Publishing Ltd.
%Z cited By 5; Conference of 2017 5th Asia Conference on Mechanical and Materials Engineering, ACMME 2017 ; Conference Date: 9 June 2017 Through 11 June 2017; Conference Code:131775