1.College of Ocean Engineering Harbin Institute of Technology,Harbin Institute of Technology, Weihai 264209, China;
2.China Construction Third Bureau First Engineering Co.,Ltd., Wuhan 430040, China
Abstract:The model updating for hybrid simulation method based on global sensitivity analysis (GS) can effectively improve the accuracy of hybrid simulation with high computing efficiency. However, this always makes it fall into the local optimal value. To address this issue, this paper introduces momentum and adaptive step size, and proposes an adaptive (GS-A) model updating hybrid simulation method based on global sensitivity analysis. The steel frame model is used as the analysis object, and the eight parameters including both the constitutive and model geometric ones are identified. The uniform design test method is used to establish 11 model update cases and numerical simulations were performed for the hybrid simulation with no updating, GS method and GS-A method, respectively. The parameter identification process, displacement time course and hysteresis curves of the 33 sets of numerical simulation cases were analyzed and compared. The results show that the GS-A method, compared with the GS method, solves the problem of the parameters falling into the local optimal value , performs higher accuracy and stability of parameter identification, and improved the model updating effect.
陈再现1,王纪伟1,2,钟炜彭1,刘铖1,李明刚1. 基于全局敏感性的自适应模型更新混合模拟方法[J]. 振动与冲击, 2024, 43(4): 215-221.
CHEN Zaixian1,WANG Jiwei1,2ZHONG Weipeng1,LIU Cheng1,LI Minggang1. An adaptive model updating method for hybrid simulation based on global sensitivity analysis. JOURNAL OF VIBRATION AND SHOCK, 2024, 43(4): 215-221.
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