Modified Hertz-damp model for base-isolated structural pounding

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Journal of Vibration and Shock ›› 2017, Vol. 36 ›› Issue (12) : 236-242.

ZHAO Da-hai 1, LIU Yong 1, LI Hong-nan 2, QIAN Hui 3, LIU Sha 1

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Abstract

Pounding is a complicated nonlinear problem. In order to investigate the structural responses under the impact of the collision, a reasonable collision model is very necessary. For the impact phenomenon of base-isolated structure, a new damping function is constructed by combining the modified Kelvin model and the Hertz-damp model. The modified Hertz-damp model is proposed, and the reliability of the new impact model is verified by numerical simulation. Comparing with other impact models through the existing pounding tests, it can be shown that the modified Hertz-damp model is more accurate than the other impact models, and can accurately simulate the pounding responses of the structure.

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numerical analysis / Hertz-damp model / structural pounding / earthquake

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ZHAO Da-hai 1, LIU Yong 1, LI Hong-nan 2, QIAN Hui 3, LIU Sha 1. Modified Hertz-damp model for base-isolated structural pounding[J]. Journal of Vibration and Shock, 2017, 36(12): 236-242

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