TOPOLOGY DESIGN OF STRUCTURES SUBJECTED TO THERMAL LOADING BY EVOLUTIONARY OPTIMIZATION PROCEDURE

摘要

This paper extends the algorithm of Evolutionary StructuralrnOptimization (ESO) developed by Xie and Steven to thernoptimal design problems of thermoelastic structures. Thisrnextension simply incorporates an evolutionary iterative processrninto thermoelastic finite element analysis. During each iterationrntwo basic steps are included. Firstly, a finite elementrnthermoelastic analysis is carried out throughout the structure atrncurrent iterative step; secondly, a small part of the lowlyrnstressed material is gradually removed from the structure by anrnevolving rejection criterion. Using such an evolution process,rnsome existing solutions for 2D thermoelasticity optimizationrncan be easily reproduced. The work presented in this paperrndemonstrates the capability of this approach in solvingrnthermoelastic problems.