Effect of High Frequency Modes on Pushover Analysis of Structures

In order to get a better accuracy, engineers tend to add more number of modes for modal pushover analysis of irregular structures. The behavior of high frequency modal response is essentially static. Unlike linear analysis, the contribution of high frequency modes in pushover analysis is not fully developed and is a developing area of research. Further the effect of high frequency modal responses in nonlinear analysis of structures is not known. This paper discusses the behavior of high frequency modal responses in the nonlinear static pushover analysis of structures.