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.
REFERENCES(18)
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Li D., Xu C., 2017, Iwan model considering normal load changes and its characteristics analysis, Journal of Harbin Institute of Technology, 49, 10, 138-144.
Li Y., Hao Z., Zhang D., 2015, Research on Iwan model based on six-parameter non-uniform density function, Chinese Journal of Theoretical and Applied Mechanics, 47, 3, 513-520.
Liu B., Dong X., Peng Z., 2020, Nonlinear equivalent model of bolted joint joint surface based on Iwan model, Noise and Vibration Control, 40, 2, 7-12.
Mindlin R.D., 1952, Effects of an oscillating tangential force on the contact surfaces of elastic spheres, Proceedings of 1st US National Congress of Applied Mechanics, ASME, New York, 203.
Song Y., Hartwigsen C.J., McFarland D.M., Vakakis A.F., Bergman L.A., 2004, Simulation of dynamics of beam structures with bolted joints using adjusted Iwan beam elements, Journal of Sound and Vibration, 273, 1, 249-276.
Wang D., Fan X., 2019, Dynamic analysis of hysteresis and nonlinear characteristics of connection interface, Journal of Vibration Engineering, 32, 6, 1060-1066.
Zhao B., Wu F., Sun K., Mu X., Zhang Y., Sun Q., 2021, Study on tangential stiffness nonlinear softening of bolted joint in friction-sliding process, Tribology International, 156, 106856.
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