RANDOM ZIGZAG METHOD APPLIED TO OPTIMUM SIZING DESIGN OF TRUSS SUBJECTED TO DISPLACEMENT AND STRESS CONSTRAINTS
This paper proposed a new structural optimum method that called the random zigzag method to be used for optimum sizing design of the truss subjected to stress and displacement constraints. Member crosssectional areas for displacement constraint are determined by the fully utilized design criteria. Member cross-sectional areas for stress constraint are found by the strength criteria. For the member cross-sectional area ratios under the displacement and stress constraints,a loosing factor of the random properties is used to improve search efficiency. The 25-bars and the 72-bars space truss were optimized,and optimization result is satisfactory by comparing with that given in reference. The study has shown that the proposed method have properties of good stability,quicker convergence,and easy use,giving value of the loosing factor by random method in iteration can improve the optimum design solution of truss with displacement constraints and stress constraints,and is of importance for optimization design of large-scale truss structures.
Optimum sizing design of truss Random zigzag method Stress constraint Displacement constraint
Shu-Tang Liu Jian-Kun Peng
School of Civil Engineering,Guangzhou University,Guangzhou 510006,P. R. China Guangdong Power Network,Jiangmen supply bureau,Jiangmen 529100,P. R. China
国际会议
The Eleventh International Symposium on Structural Engineering(第十一届结构工程国际研讨会)
广州
英文
757-762
2010-12-01（万方平台首次上网日期，不代表论文的发表时间）