基于复阻尼模型的等效粘性阻尼系统自由振动响应时域方法

IF 2.8 4区工程技术 Q1 ACOUSTICS

Journal of Low Frequency Noise Vibration and Active Control Pub Date : 2023-02-15 DOI:10.1177/14613484231157514

Shuxia Wang, Jianyuan He, Jia Fan, Panxu Sun, D. Wang

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引用次数: 0

摘要

基于复时域阻尼模型的自由振动响应是发散的。传统的逐级积分法无法计算时域响应。在消除复杂阻尼模型发散项的理论解的基础上，提出了等效粘性阻尼模型，并实现了相应的平均加速度法。数值算例表明，等效粘性阻尼系统的计算结果与基于复阻尼模型的删除发散项的计算结果是收敛的。验证了所提方法的正确性，计算效率高。

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A time-domain method for free vibration responses of an equivalent viscous damped system based on a complex damping model

The free vibration responses are divergent based on a complex time-domain damping model. The traditional step by step integration method cannot be used to calculate the time-domain responses. Based on the theoretic solution that eliminates the divergent term for the complex damping model, the equivalent viscous damping model is proposed and the corresponding average acceleration method is realized in this paper. The numerical cases show that the calculated results of the equivalent viscous damped system are convergent, which are equal to the ones of the deleted divergent term based on the complex damping model. The correctness of the proposed method is verified, and the computational efficiency is high.

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来源期刊

Journal of Low Frequency Noise Vibration and Active Control Engineering-Mechanical Engineering

CiteScore

4.90

自引率

4.30%

发文量

审稿时长

15 weeks

期刊介绍： Journal of Low Frequency Noise, Vibration & Active Control is a peer-reviewed, open access journal, bringing together material which otherwise would be scattered. The journal is the cornerstone of the creation of a unified corpus of knowledge on the subject.