@article { author = {Naderpour, Hosein and de Menezes e Carneiro de Barros, Rui Manuel and Khatami, Seyed Mohammad}, title = {A NEW MODEL FOR CALCULATING THE IMPACT FORCE AND THE ENERGY DISSIPATION BASED ON CR-FACTOR AND IMPACT VELOCITY}, journal = {Scientia Iranica}, volume = {22}, number = {1}, pages = {59-68}, year = {2015}, publisher = {Sharif University of Technology}, issn = {1026-3098}, eissn = {2345-3605}, doi = {}, abstract = {Many researchers have studied building pounding to calculate the dissipated energy and the impact force between two buildings during earthquake. In this paper, a new equation is proposed to measure the impact force and energy dissipation. The results based on the proposed equation are compared with results of the available equations. Using a suggested link element, a new formula is presented to calculate the impact force and energy dissipation. In order to evaluate the results of dissipated energy, a new relation between CR and impact velocity is also suggested. Since there is a need to have a reference curve to select impact velocity based on coefficient of restitution, several impact velocities and CRs were evaluated. By using the latter curve, results could be evaluated. A new equation of motion is assumed to select the best impact velocity and coefficient of restitution. Finally, based on coefficient of restitution and by using a steady-state response of single degree of freedom system due to the external force, a new equation of motion is suggested to calculate impact damping ratio. }, keywords = { Impact,Coefficient of Restitution,Velocity,Dissipated Energy,damping}, url = {https://scientiairanica.sharif.edu/article_1843.html}, eprint = {https://scientiairanica.sharif.edu/article_1843_991d8a30997fda427359e675940a4c7c.pdf} }