Modal and Inertial Decomposition of Wind-Induced Energy State

Abstract

This paper presents a numerical approach for investigating the energy state of a planar steel shear frame subjected to turbulent wind loads. The objective is to illustrate the modal and inertial distribution of induced and dissipated energy generated by time varying wind forces. Time histories of wind pressure were acquired for a time period of 600 s from a bluff body Computational Fluid Dynamic turbulence model. Structural response, induced by highly arbitrary wind loads, is expressed by modal participation functions numerically assessed via Duhamel convolution integral. Modal decomposition functions are further derived and integrated into induced and dissipated energy components.