黑龙江科技大学学报2025，Vol.35Issue(2)：262-267,6.DOI:10.3969/j.issn.2095-7262.2025.02.014
基于结构谱半径的离线迭代混合试验稳定性与收敛性分析
Stability and convergence analysis of offline iterative hybrid testing based on structural spectral radius
摘要
Abstract
This paper aims to investigate the change law behind the numerical calculation stability and convergence of offline iterative hybrid testing under different spectral radius of structural dynamic paramete ramplification matrix.The study consists of taking Kevin shock absorber with the single-store frame as the object;and conducting the iterative hybrid testing numerical simulations by adjusting the stiffness of Kevin shock absorbers under different spectral radius of structural dynamic parameter amplification matrix.The results show that the stability of iterative hybrid testing numerical calculation is negatively correlated with the spectral radius of the structural dynamic parameter amplification matrix.When the spectral radius are 0.1,0.5,0.9,1.0,1.1,1.5 and 2.0 respectively,the complete convergence of the structural displace-ment time history requires 21,56,94,103,112,136 and 159 iterations respectively;and every 0.1 in-crease in the spectral radius,the peak error of the structural displacement response increases by 25 times approximately.The number of iterative convergence steps is positively correlated with the iteration number,and the stronger the numerical stability is,the faster the iterative convergence presents.关键词
混合试验/离线迭代/谱半径/收敛性/稳定性Key words
hybrid testing/offline iterative/spectral radius/convergence/stability分类
土木建筑引用本文复制引用
郑欢,孟丽岩,张佳辉,王涛..基于结构谱半径的离线迭代混合试验稳定性与收敛性分析[J].黑龙江科技大学学报,2025,35(2):262-267,6.基金项目
国家自然科学基金项目(52278173) （52278173）
