A note on the Hertz contact model with nonlinear damping for pounding simulation

被引:98
|
作者
Ye, Kun [1 ]
Li, Li [1 ]
Zhu, Hongping [1 ]
机构
[1] Huazhong Univ Sci & Technol, Hubei Key Lab Control Struct, Coll Civil Engn & Mech, Wuhan 430074, Peoples R China
来源
EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS | 2009年 / 38卷 / 09期
关键词
structural pounding; earthquake; Hertz model; nonlinear damping; coefficient of restitution; BUILDINGS;
D O I
10.1002/eqe.883
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Structural pounding during earthquakes has been recently investigated extensively by using different models of impact force. In this paper, reexamination of the Hertz contact model with nonlinear damping is made. Based on this reexamination, the formula used to determine the damping constant in terms of the spring stiffness, the coefficient of restitution and relative approaching velocity of two colliding bodies is found to be incorrect for pounding Simulation in structural engineering. In order to correct this problem, a more accurate approximating formula for the damping constant is theoretically derived. The correctness of the derived analytical formula has been confirmed through numerical simulations. Copyright (C) 2008 John Wiley & Sons, Ltd.
引用
收藏
页码:1135 / 1142
页数:8
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