Reduced-order modeling approach for frictional stick-slip behaviors of joint interface
| Autor: | Qiang Wan, Chao Xu, Xuanhua Fan, Dong Wang |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Engineering
Aerospace Engineering 02 engineering and technology Slip (materials science) 01 natural sciences Physics::Geophysics Reduced order 0203 mechanical engineering 0103 physical sciences medicine 010301 acoustics Civil and Structural Engineering business.industry Mechanical Engineering Structural engineering Dissipation Finite element method Computer Science Applications Nonlinear system 020303 mechanical engineering & transports Control and Systems Engineering Mechanical joint Joint stiffness Signal Processing Curve fitting medicine.symptom business |
| Zdroj: | Mechanical Systems and Signal Processing. 103:131-138 |
| ISSN: | 0888-3270 |
| Popis: | 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 non-zero 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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