Using Damage Indices for Investigating the Effect of Hole Distance in Seismic Behavior of Drilled Flange Connections

Asgaran, Hamed; Vetr, Mohammad Qasem; Ebrahimizadeh, Hamidreza

doi:10.48303/jsee.2025.2037960.1118

Using Damage Indices for Investigating the Effect of Hole Distance in Seismic Behavior of Drilled Flange Connections

Articles in Press

Document Type : Research Article

Authors

Hamed Asgaran ¹

Mohammad Qasem Vetr ²

Hamidreza Ebrahimizadeh ²

¹ International Institute of Earthquake Engineering and Seismology (IIEES)

² international institute of earthquake engineering and seismology

10.48303/jsee.2025.2037960.1118

Abstract

The Drilled Flange connection is a reduced cross section beam connection that has been suggested by creating holes in the beam flange instead of the flange cut. In these connections, for quantifying the damage of a component, damage index can be used as a factor for parametric comparison of results from software modeling. This index includes pressure index, von Mises index, Equivalent Plastic Strain, triaxial strain and rupture. In this article the Mises and Equivalent Plastic Strain damage indices have been used in order to quantify the seismic behavior of DF connection. To better explain the concept of these indices, it can be said whenever the von-Mises stress is higher than the yield stress, failure will occur and the equivalent plastic strain will be greater than zero in the area that has been plasticized. According to the concepts, in the twenty four DF connection that has been modeled in ABAQUS software based on proposed patterns and parameters in FEMA, numerical analysis of damage to these connections with considering the effect of hole distance from the edge of the beam flange was investigated and the optimize model for transferring the maximum stress and plastic strain from the edge of the column has been determined

Keywords

Drilled Flange Connections

Damage Index

Seismic Behavior

Numerical Analysis

Subjects