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论文类型：会议论文

发表时间：2003-01-01

收录刊物：CPCI-S

页面范围：2405-2408

关键字：mono-level approach; system reliability; reliability-based optimization; BFGS; penalty function

摘要：Optimal designs under the system reliability constraint are not straightforward due to the low computational efficiency and weak convergence of the process. In the paper, a new mono-level iterative approach to optimal designs with mixed design variables and stochastic variables in a hybrid space is presented and discussed. Unlike the classical bi-level method, the method proposed here employs a new iterative approach where the reliability analyses and optimization process converge simultaneously and respectively. Based on the FEA code-ANSYS, a general purpose Reliability-Based Optimization system is developed by seamlessly integration with the analysis modulus of ANSYS.