种基于超体积迭代策略的含区间参数结构响应区间的分析方法

• Format: Patent
• Language: Chinese
• Published: 13.07.2018
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

本发明公开了种基于超体积迭代策略的含区间参数结构响应区间的分析方法，本发明将结构响应量作为个目标函数，通过优化算法求解响应量的最大/小值，从而确定响应量的上/下界。本发明采用的优化算法是种基于超体积迭代策略全局优化算法，采用辛普森积分的策略在不确定参数范围内自适应地布置积分点，寻找这些积分点中对应目标函数的最大/小值，然后以目标函数最大/小值所对应的积分点为起始点，基于牛顿法得到全局的最大/小值，即得到了不确定性参数在非线性系统中传播的上/下界。该方法可以在不确定输入条件下，准确地确定结构的区间响应传播边界。 The invention discloses an analysis method for a structure response interval comprising interval parameters based on a hyper-volume iterative strategy. According to the method, a structure response variable is taken as a target function, the maximum/minimum value of the response is solved through an optimization algorithm, and therefore an upper/lower boundary of the response is determined. The adopted optimization algorithm is a global optimization algorithm based on the hyper-volume iterative strategy, a strategy of Simpson integral is adopted to self-adaptively arrange integral points within a range of uncertain parameters, the corresponding maximum/minimum value of the target function in the integral points is founded, then an integral point correspond