A Reliability Index Based Decoupling Method for Reliability-Based Design Optimization
Reliability-based design optimization (RBDO) evaluates variation of output induced by uncertainties of design variables and results in an optimal design while satisfying the reliability requirements. However, its use in practical applications is hindered by the huge computational cost during the evaluation of structure reliability. In this paper, the reliability index based decoupling method is developed to improve the efficiency of probabilistic optimization. The reliability index is used to calculate the shifting vector in the decoupling process, due to its efficiency in evaluating violated probabilistic constraints. The computation capability of the proposed method is demonstrated using two examples, which are widely used to test RBDO methods. The comparison results show that the proposed method has the same accuracy as the existing methods, and it is also very efficient.
Reliability index Decoupling Reliability-based design Optimization
Zhenzhong Chen Haobo Qiu Hongyan Hao Huadi Xiong
The State Key Laboratory of Digital Manufacturing Equipment and TechnologySchool of Mechanical Scien The State Key Laboratory of Digital Manufacturing Equipment and Technology School of Mechanical Scie
国际会议
武汉
英文
223-228
2012-07-29（万方平台首次上网日期，不代表论文的发表时间）