Optimization Design of Random Parameters Structures Based on General Reliability
Chen Jianjun,Ma Fang,Ma Hongbo,Wang Xiaobing,Du Lei
(School of Electronic Mechanical Engineering, Xidian University, Xi'an 710071)

Abstract: An optimization design method for the random parameters structure based on general reliability is proposed, and the general reliability expressions of the random parameters truss constrained by a kind of fuzzy allowance under random loads are derived. The structural optimization design model is established in such form that the cross-section areas are refered as the design variables, the minimum of the frame weight as the objective with the general reliability rest ricts of fuzzy stress and fuzzy displacement. A numerical example shows that the presented general reliability expressions and method enable to transform a cons trained optimization problem into a nonrestraint one, combined genetic algorithm the penalty function, it is expected to obtain a satisfied result.
Keywords: general reliability, random parameters structure, random loads, optimi zation design based on reliability, penalty function method, genetic algorithm.