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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 108
Edited by: J. Kruis, Y. Tsompanakis and B.H.V. Topping
Paper 184

A Study of Pounding to Simulate Impact and Determine the Impact Damping Ratio

H. Naderpour1, R.C. Barros2 and S.M. Khatami1

1Faculty of Civil Engineering, Semnan University, Iran
2Department of Civil Engineering, Faculty of Engineering of the University of Porto, Portugal

Full Bibliographic Reference for this paper
H. Naderpour, R.C. Barros, S.M. Khatami, "A Study of Pounding to Simulate Impact and Determine the Impact Damping Ratio", in J. Kruis, Y. Tsompanakis, B.H.V. Topping, (Editors), "Proceedings of the Fifteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 184, 2015. doi:10.4203/ccp.108.184
Keywords: pounding, impact damping ratio, dashpot, dissipated energy.

When two buildings are built close to each other and the separation distance is not enough, seismic excitation results in large lateral displacements and buildings may collide with each other. This phenomena is called "pounding", which can result in severe damage to the affected structures. In this paper the contact zone is considered as a point, located at the level of a slab and buildings are assumed to be two bodies. In order to simulate impact, an unreal element is used between the two mentioned points, which is mathematically described as a spring and dashpot. A dashpot is used to determine energy absorption and is introduced using an impact damping ratio (IDR). In this paper, a new equation of motion is suggested to calculate the IDR and the accuracy of equation is investigated.

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