基于自适应模型的力修正迭代混合试验方法

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振动与冲击 ›› 2025, Vol. 44 ›› Issue (1) : 1-9.

振动理论与交叉研究

基于自适应模型的力修正迭代混合试验方法

王涛（*），张佳辉，孟丽岩，浩杰敦，郑欢，贺林慈

作者信息 +

Force correction iterative hybrid test method based on adaptive model

WANG Tao（*）, ZHANG Jiahui, MENG Liyan, HAO Jiedun, ZHENG Huan, HE Linci

Author information +

文章历史 +

摘要

传统的力修正迭代混合试验方法采用了固定的模型进行恢复力修正，存在模型不够精准导致迭代轮次增加的问题。针对该问题，提出基于自适应模型的力修正迭代混合试验方法。该方法采用迭代所有轮次的恢复力修正值与每轮迭代物理子结构的真实恢复力搭建自适应模型进行迭代恢复力修正，提高了迭代收敛速度与迭代收敛精度。以单层框架黏滞阻尼器减震结构为例，分析了不同的权重分配系数与初始模型参数对于迭代收敛速度和收敛精度的影响；通过对不同自振周期的结构分别验证，分析结构自振周期对该方法的影响。结果表明：不同的权重分配系数和模型参数对迭代收敛速度与迭代收敛精度有较大影响；在权重分配系数为0.025，初始模型参数为0.80时，迭代收敛速度和收敛精度远高于传统的力修正迭代混合试验方法；基于自适应模型的力修正迭代混合试验方法在不同的单层框架结构迭代收敛速度与迭代收敛精度远优于传统的力修正迭代混合试验方法，对于自振周期小于1.0 s的结构，该方法优势更明显。

Abstract

Traditional force correction iterative hybrid test method uses a fixed model for restoring force correction, it has the problem of insufficient model accuracy causing increase in iteration rounds. Here, aiming at this problem, a force correction iterative hybrid test method based on adaptive model was proposed. This method could use restoring force correction values of all iteration rounds and true restoring force of physical substructure in each iteration round to build an adaptive model for iterating restoring force correction, and improve iteration’s convergence speed and accuracy. Taking a single-layer frame viscous damper seismic reduction structure as an example, effects of different weight distribution coefficients and initial model parameters on iteration convergence speed and accuracy were analyzed. Effects of structural natural vibration periods on this method were analyzed through separately verifying structures with different natural vibration periods. The results showed that different weight distribution coefficients and model parameters more largely affect iteration convergence speed and accuracy; when the weight distribution coefficient is 0.025 and the initial model parameter is 0.80, the proposed method’s iteration convergence speed and accuracy are much higher than those of traditional force correction iterative hybrid test method; the force correction iterative hybrid test method based on adaptive model has much better convergence speed and accuracy than traditional force correction iterative hybrid test method in different single-layer frame structures; for structures with a natural vibration period less than 1.0 s, the proposed method has more obvious advantages.

导出引用

王涛, 张佳辉, 孟丽岩, 浩杰敦, 郑欢, 贺林慈. 基于自适应模型的力修正迭代混合试验方法[J]. 振动与冲击, 2025, 44(1): 1-9

Force correction iterative hybrid test method based on adaptive model. Force correction iterative hybrid test method based on adaptive model[J]. Journal of Vibration and Shock, 2025, 44(1): 1-9

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