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Reduced-order modeling approach for frictional stick-slip behaviors of joint interface

机译：关节界面摩擦粘滑行为的降阶建模方法

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摘要

The complex frictional stick-slip behaviors of mechanical joint interface have a great effect on the dynamic properties of assembled structures. In this paper, a reduced-order modeling approach based on the constitutive Iwan model is proposed to describe the stick-slip behaviors of joint interface. An improved Iwan model is developed to describe the nonzero residual stiffness at macro-slip regime and smooth transition of joint stiffness from micro-slip to macro-slip regime, and the power-law relationship of energy dissipation during the micro-slip regime. In allusion to these nonlinear behaviors, the finite element method is used to calculate the recycle force under monolithic loading and the energy dissipation per cycle under oscillatory loading. The proposed model is then used to predict the nonlinear stick-slip behaviors of joint interface by curve-fitting to the results of finite element analysis, and the results show good agreements with the finite element analysis. A comparison with the experiment results in literature is also made. The proposed model agrees very well with the experiment results.
机译：机械接头界面的复杂摩擦粘滑特性对装配结构的动力特性有很大影响。本文提出了一种基于本构Iwan模型的降阶建模方法来描述关节界面的粘滑行为。建立了改进的Iwan模型，以描述宏观滑移状态下的非零残余刚度以及关节刚度从微滑移到宏观滑移的平稳过渡，以及微滑移过程中能量耗散的幂律关系。针对这些非线性行为，使用有限元方法来计算整体负载下的循环力和振荡负载下每个周期的能量耗散。将该模型用于有限元分析结果的曲线拟合，预测接头界面的非线性粘滑行为，结果与有限元分析吻合良好。还与文献中的实验结果进行了比较。所提出的模型与实验结果非常吻合。

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  • 来源
    《Mechanical systems and signal processing》 |2018年第15期|131-138|共8页
  • 作者

    Wang Dong; Xu Chao; Fan Xuanhua; Wan Qiang;

  • 作者单位

    Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang 621999, China,Shock and Vibration of Engineering Materials and Structures Key Laboratory of Sichuan Province, Mianyang 621999, China;

    School of Astronautics, Northwestern Polytechnical University, Xi'an 710072, China;

    Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang 621999, China;

    Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang 621999, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Stick-slip; Joint interface; Iwan model; Finite element method; Curve-fitting;

    机译：粘滑;联合接口;伊万模型有限元法;曲线拟合;

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