Appraisal of simulation tools for fracture in steel components under seismic loading

Abstract:

This paper assesses the capability of an existing damage accumulation law to pbkp_redict fracture due to ultra-low-cycle fatigue in steel structures under earthquake loading. Finite element analyses are conducted for three experimentally tested steel components having different stress-states governing fracture, namely, a steel plate shear wall, a beam-to-column moment connection assemblage, and a brace. All three components were subjected to quasi-static cyclic loads. The analyses reproduced the global Force-Deformation response prior to fracture initiation; however, strength degradation due to fracture was not captured. The analyses yielded satisfactory results regarding the location of fracture initiation; however the instant where fracture initiates in the analyses was delayed for stress states governed by high Lode angle parameter (i.e. the beamcolumn connection) and it occurred too early for stress states with widely varying Lode angle parameter (i.e. the brace).

Año de publicación:

2018

Keywords:

Fuente:

scopus