Dynamic Identification Method of Linear Stiffness and Angular Stiffness of Metal Rubber Clamp

刘伟; 朱宏彦; 吕朋蓁; 黄发; 刘洋

doi:10.13433/j.cnki.1003-8728.20230307

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Dynamic Identification Method of Linear Stiffness and Angular Stiffness of Metal Rubber Clamp

更新时间：2026-04-23

- Dynamic Identification Method of Linear Stiffness and Angular Stiffness of Metal Rubber Clamp
- Mechanical Science and Technology for Aerospace Engineering Vol. 44, Issue 9, Pages: 1636-1644(2025)
- 作者机构：
  
  1. 西北工业大学力学与土木建筑学院,西安,710072
  2. 中国燃气涡轮研究院机构,成都,610599
- 作者简介：
- 基金信息：
- DOI：10.13433/j.cnki.1003-8728.20230307
  CLC：
- Published：2025
- 稿件说明：
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刘伟, 朱宏彦, 吕朋蓁, et al. Dynamic Identification Method of Linear Stiffness and Angular Stiffness of Metal Rubber Clamp[J]. Mechanical Science and Technology for Aerospace Engineering, 2025, 44(9): 1636-1644.
DOI：

刘伟, 朱宏彦, 吕朋蓁, et al. Dynamic Identification Method of Linear Stiffness and Angular Stiffness of Metal Rubber Clamp[J]. Mechanical Science and Technology for Aerospace Engineering, 2025, 44(9): 1636-1644. DOI： 10.13433/j.cnki.1003-8728.20230307.

摘要

研究发现静态试验得到金属橡胶卡箍刚度不能准确地反映管路系统动力学特性。该文将金属橡胶卡箍简化为两个支承面内的线弹簧、角扭转弹簧模型，通过两种动力学试验：管路-单卡箍系统扫频试验获得平动模态来分析线刚度、管路-双卡箍模态试验获得弯曲模态来分析角刚度。将仿真结果与两种试验进行模态匹配，以相同振型下所对应的仿真固有频率与试验频率之间的误差最小为目标，辨识得到金属橡胶卡箍在两个支承方向上的动态线刚度和角刚度参数。最后，还给出了卡箍在两个支承方向上的阻尼比。

Abstract

The stiffness of the metal rubber clamp obtained from the static test cannot accurately reflect the dynamic characteristics of the pipeline system. The metal rubber clamp as an in-plane linear spring and an angular transverse-torsional spring model is simplified. Two kinds of dynamic tests are carried out: the sweeping frequency test of the single clamp-pipe system

the linear stiffness is obtained by the translational mode analysis. And the modal test of the single pipe-double clamps

the angular stiffness is obtained by using the bending mode analysis. The simulated results are compared with the two tests by using the modes matching approach. With the goal of minimizing the error between the simulated natural frequency and the test frequency corresponding to the same vibration mode

the dynamic linear stiffness and angular stiffness of the metal rubber clamp in two support directions are identified. Finally

the damping ratio of the clamp in both support directions is also given.

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