【作者】 邓晓丹； 陈飙松； 贲思；

【Author】 Deng Xiaodan;Chen Biaosong;Ben Si;State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology;

【机构】 工业装备结构分析国家重点实验室工程力学系大连理工大学；

【摘要】 为降低产品质量的不确定性和随机性,提高结构可靠性,本文介绍了基于大连理工大学自主研发的SiPESC科学计算平台,使用C++语言进行可靠性计算和优化模块开发工作。本文使用改进的一次二阶矩方法进行可靠度计算,并利用当量正态化完成参数分布类型的转化,保证计算效率。可靠度优化部分参考功能度量法结合确定性优化算法实现优化计算。针对实际工程算例中的隐式极限状态函数问题,调用SiPESC平台通用代理模型框架中的响应面方法,拟合出极限状态函数,代入可靠性计算和可靠性优化模块进行计算。为了验证结果的准确性和软件功能的高效性,本文采用实际工程算例与蒙特卡罗模拟方法进行对比,得到了同商用软件一致的计算结果和较高的计算效率。更多还原

【Abstract】 In order to reduce the uncertainty and randomness of product quality and improve the reliability of structure, this paper introduces the SIPESC scientific computing platform independently developed by Dalian University of Technology, and uses C++ language to develop the reliability calculation and optimization module. Different from the traditional Monte Carlo simulation method, this paper uses the improved first order second moment method to calculate the reliability, and uses the equivalent normalization to complete the transformation of parameter distribution types to ensure the calculation efficiency. The optimization part refers to the function measurement method and combines with the deterministic optimization framework of SIPESC platform to form a two-layer cyclic nested mode to realize the optimization calculation. Aiming at the problem of implicit limit state function in practical engineering examples, the response surface method in the general proxy model framework of SIPESC platform is called to fit the limit state function, and then it is substituted into the reliability calculation and reliability optimization module for calculation. In order to verify the accuracy of the results and the efficiency of the software function, this paper uses the actual engineering example to compare with the ANSYS Monte Carlo simulation method, and obtains the same calculation results as the commercial software and higher calculation efficiency.更多还原