Determining a neccessary number of natural frequencies of structures in a earthquake load-deformation structural problem

Abstract

     The number of natural frequencies determines the preciseness of the results and the amount of calculation work in an anti-earthquake design problem. Therefore, determining an appropriate number of natural frequencies is crucial in terms of assuring the preciseness of the results and reducing the amount of calculation work in this type of problems. This paper is about some studies on determining a neccessary number of natural frequencies of several structures in anti-earthquake design problems.