Numerical Micro-Slip Model for Dry Friction Damper in 2D Kinematic Contact Motion

doi:10.7652/xjtuxb202106003

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Numerical Micro-Slip Model for Dry Friction Damper in 2D Kinematic Contact Motion

更新时间：2025-07-09

- Numerical Micro-Slip Model for Dry Friction Damper in 2D Kinematic Contact Motion
- Vol. 55, Issue 6, Pages: 18-27(2021)
- 作者机构：
  
  1. 浙江大学机械工程学院,杭州,310027
  2. 台州学院航空工程学院,浙江,台州,318000
  3. 浙江双环传动机械股份有限公司传动研究院,浙江,台州,318000
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202106003
  CLC： TH133
- Online First：10 June 2021，
  
  Published：2021
- 稿件说明：
移动端阅览
Numerical Micro-Slip Model for Dry Friction Damper in 2D Kinematic Contact Motion[J]. 2021, 55(6): 18-27.
DOI：

Numerical Micro-Slip Model for Dry Friction Damper in 2D Kinematic Contact Motion[J]. 2021, 55(6): 18-27. DOI： 10.7652/xjtuxb202106003.

摘要

为克服宏滑移模型无法计及阻尼器柔性及一维微滑移模型对运动维度和激励时变性限制

考虑阻尼器自身柔性

将阻尼器离散

在其接触面节点安置滞后弹簧单元

形成干摩擦阻尼器的平面微滑移数值模型。模型应用滞后弹簧元族模拟摩擦接触面局部黏-滑效应。求解模型时

离散外部激励历程

用状态向量标定阻尼器局部黏滞-滑移-分离特征; 运用数值累积方法对接触摩擦面局部状态持续跟踪

跟踪过程依据接触面黏滞-滑移-分离转化判据持续修正位移、摩擦力及运动状态向量

最终得到稳定的触点位移-干摩擦力滞回曲线。阻尼器法向载荷较大时

共振频响结果显示

应用平面运动微滑移模型的位移频响较宏滑移模型位移频响计算结果差异明显

在共振频率点

宏滑移模型频响结果为0.049 m

而微滑移模型结果为0.038 m

相差22.4%

微滑移模型求解结果更趋近于实验结果。

Abstract

A 2D numerical micro-slip model was developed in order to overcome the limitation on kinematic direction and time-invariant excitation of the one-dimensional micro-slip model

and the incapability of considering the flexibility of the damper when using a traditional macro-slip model. In this model

the dry friction damper was discretized and the lag spring family was used to indicate the local stick-slip effects of the frictional contact surface. The time-process of the external excitation was dispersed and the state vectors were applied to calibrate the local stick-slip-separation state of the contact surface in the beginning of the solution procedure

and then the local kinematic state of the contact friction surface was continuously tracked by the numerical accumulation method. The displacement

friction force and kinematic state vectors were corrected by time point during the solving process according to the stick-slip-separation transformation criterion. After several cycles of tracking

a stable hysteretic curve of contact displacement versus dry friction force was obtained. Resonance frequency response results show that the displacement frequency response calculated by the plane motion micro-slip model is 0.049 m versus 0.038 m calculated by the macro-slip model while greater normal force is applied to the damper

indicating a 22.4% difference between the two dry friction models

and the results obtained by the micro-slip model are closer to the experimental data.

关键词

Keywords

references

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