FINITE ELEMENT MODELLING AND ANALYSIS OF YIELDING STEEL SHEAR PANEL DEVICE FOR PASSIVE ENERGY DISSIPATION

摘要

Yielding Shear Panel Device (YSPD) has recently been proposed for steel braced frames to absorb seismic energy during earthquakes. This system consists of short segment of a square hollow section (SHS) with a steel diaphragm plate welded inside it. YSPDs are attached to chevron braced frame using bolted-connection to ensure easy installation and replacement. Research on YSPDs is still in the initial stage and a significant amount of study is needed before they can be accepted by the engineering community. This paper presents development of a finite element model to study the behavior of YSPDs. The finite element model includes both material and geometric non-linearity. The paper describes the validation of the finite element model using the results from an experimental program. Excellent correlation between the test results and the finite element analysis results is observed. The validated FE model is used to conduct a detailed parametric study considering parameters such as diaphragm plate thickness, SHS section thickness and shear panel aspect ratio.