论文部分内容阅读
讨论了广义随机空间内随机参数服从正态分布的可靠性优化设计问题。在基本随机参数均值、方差和相关系数已知的情况下,避免了相关变量的独立变换以及求极限状态函数对基本变量的偏导数,应用可靠度指标计算的优化方法与有限元法相结合,并通过计算机程序给与实现,迅速准确地得到了可靠性优化设计信息。算例结果表明,本文提出的方法是一种有效、实用的方法。
The reliability optimization design problem of random parameters in a generalized stochastic space subject to normal distribution is discussed. Under the condition that the mean, variance and correlation coefficient of the basic random parameters are known, the independent transformation of the related variables and the partial derivative of the ultimate state function to the basic variables are avoided. The optimization method which uses the reliability index calculation is combined with the finite element method Through the computer program to achieve, quickly and accurately obtained the reliability of optimal design information. The results show that the proposed method is an effective and practical method.