基于改进MCMC算法和代理模型的结构仿真模型更新

缪季, 段立平, 刘吉明, 林思伟, 赵金城

Structural Simulation Model Updating Based on Improved MCMC Algorithm and Surrogate Model

MIAO Ji, DUAN Liping, LIU Jiming, LIN Siwei, ZHAO Jincheng

表3 更新前后模态响应对比

Tab.3 Comparison of modal responses before and after updating

模态 真实 频率/Hz 更新前 更新后 频率/Hz 误差/% 频率/Hz 误差/% 一阶 28.381 27.487 3.150 28.381 0 二阶 108.71 105.29 3.146 108.72 0.009 三阶 229.46 222.24 3.147 229.47 0.004