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Content available Model considering residual stiffness and stiffness discontinuity of bolted joints
Wang Sheng-Ao, Zhu Min, Xu Zi-Jian, Guo Ming, Li Biao, Wu Fei
Journal of Theoretical and Applied Mechanics
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2022
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Vol. 60 nr 1
63--75
EN
The nonlinear dynamic behavior has an important impact on energy dissipation and vibra- tion damping characteristics of bolted joints. Firstly, the development of tangential dynamic models is summarized and analyzed. Secondly, a five-parameter Iwan model based on a trun- cated power-law distribution is proposed. The backbone and hysteresis curves are obtained. Thirdly, normalized and dimensionless analysis is performed. On the basis of the above, a more concise four-parameter Iwan model with stiffness continuity is proposed. Finally, the validity of the model is verified by comparing the energy dissipation vs excitation force amplitude curve with the experimental data.
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