STUDY ON DYNAMICS MODELING AND RESPONSE CHARACTERISTIC OF BOLTED STRUCTURE WITH THE CONTACT SURFACE CHARACTERISTIC

ZHAI Zhangxin; SUN Yunyun; WU Shijing

doi:10.16579/j.issn.1001.9669.2025.01.007

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STUDY ON DYNAMICS MODELING AND RESPONSE CHARACTERISTIC OF BOLTED STRUCTURE WITH THE CONTACT SURFACE CHARACTERISTIC

·Experimental Research·Testing Technology· | 更新时间：2025-01-23

- STUDY ON DYNAMICS MODELING AND RESPONSE CHARACTERISTIC OF BOLTED STRUCTURE WITH THE CONTACT SURFACE CHARACTERISTIC
- Journal of Mechanical Strength Vol. 47, Issue 1, Pages: 58-67(2025)
- 作者机构：
  
  武汉大学动力与机械学院，武汉 430072
- 作者简介：
  
  WU Shijing, E-mail: wsj@whu.edu.cn
- 基金信息：
  
  National Natural Sciences Foundation of China(52075392)
- DOI：10.16579/j.issn.1001.9669.2025.01.007
  CLC： TH114
- Published：15 January 2025，
  
  Received：16 February 2023，
  
  Revised：16 May 2023，
- 稿件说明：
移动端阅览
ZHAI ZHANGXIN, SUN YUNYUN, WU SHIJING. STUDY ON DYNAMICS MODELING AND RESPONSE CHARACTERISTIC OF BOLTED STRUCTURE WITH THE CONTACT SURFACE CHARACTERISTIC. [J]. Journal of mechanical strength, 2025, 47(1): 58-67.
DOI：

ZHAI ZHANGXIN, SUN YUNYUN, WU SHIJING. STUDY ON DYNAMICS MODELING AND RESPONSE CHARACTERISTIC OF BOLTED STRUCTURE WITH THE CONTACT SURFACE CHARACTERISTIC. [J]. Journal of mechanical strength, 2025, 47(1): 58-67. DOI： 10.16579/j.issn.1001.9669.2025.01.007.

摘要

在实际激励载荷的作用下，栓接系统的非线性动力学特性会对整个机械系统产生一定影响。当考虑栓接结构的结合面表面形貌参数与塑性指数时，实际栓接结构的系统动力学模型将更加复杂。因此，在考虑栓接结构的结合面表面形貌参数、塑性指数对法向接触刚度、接触阻尼的影响以及外界简谐激励等多种条件下，对现有的栓接结构法向接触模型进行修正，并将得到的非线性法向接触刚度与非线性接触阻尼应用于栓接结构的受迫振动动力学响应特性分析，研究栓接结构中结合面表面形貌参数和塑性指数对其动力学特性的影响。

Abstract

Considering the actual excitation load

the nonlinear dynamics characteristics of the bolted structure have a certain impact on the whole mechanical system. The dynamics model of actual bolted structure is more complex with considering joint surface morphology parameters and plasticity index. Therefore

with considering the influence of the surface mopography parameters

plastic index on the normal contact stiffness

contact damping and under the various conditions such as external harmonic excitation

the existing normal contact model of bolted structure was modified

and the obtained nonlinear normal contact stiffness and nonlinear contact damping were applied to the dynamics response characteristics analysis of forced vibration of bolted joints structure. The influences of surface morphology parameters and plasticity index on the dynamics characteristics of bolted structure were studied.

关键词

栓接结构粗糙结合面表面形貌参数塑性指数非线性特性

Keywords

Bolted structureRough joint surfaceSurface morphology parameterPlasticity indexNonlinear characteristic

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