Modified Analytical Expression of Damping Constant in the Hertz Contact Model with Non-Linear Damping for Structural Pounding

Kun Ye; Rong Fu; Sha Qi Ma

doi:10.4028/www.scientific.net/AMM.29-32.220

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 29-32Modified Analytical Expression of Damping Constant...

Modified Analytical Expression of Damping Constant in the Hertz Contact Model with Non-Linear Damping for Structural Pounding

Abstract:

Structural pounding under earthquakes has been recently extensively investigated by using different models of impact force. In this paper, reexamination into the Hertz contact model with nonlinear damping is made. Based upon 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 wrong. In order to correct this error, 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.

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Periodical:

Applied Mechanics and Materials (Volumes 29-32)

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220-225

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https://doi.org/10.4028/www.scientific.net/AMM.29-32.220

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Online since:

August 2010

Authors:

Kun Ye, Rong Fu, Sha Qi Ma

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Coefficient of Restitution, Earthquake, Hertz Model, Non-Linear Damping, Structural Pounding

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