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《Machinery》 2012-01
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Computing efficiency analysis based on topology optimization of different space elements

WANG Neng,SUN Li-ping,WANG Yu-yan,FAN Xiao-qin,LI Bing(Dalian Jiaotong University,Dalian 116028,China)  
Topology optimization of the specific instance is discussed in this paper,the computing efficiency and accuracy of topology results built on linear elements and quadratic elements are compared.Results show that the quadratic element model has higher accuracy,however,it's calculate time is nearly a hundred times than linear element model,which causes the decreasing problem of efficiency.The linear hexahedral and pentahedron element model relative to quadratic one for the bias are 4.57% and 14.62%,the accuracy satisfies the requirements.Therefore,in the topology optimization of complex models,it's necessary to adopt the combination of linear elements or quadratic combine with linear elements,to reduce the size and improve the efficiency.
【CateGory Index】: TB114
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