1. Department of Civil and Environmental Engineering, Portland State University, PO. Box 751, Portland, Oregon, 97207, USA 2. Department of Civil Engineering, Mail Stop 258, University of Nevada, Reno, Nevada. 89557, USA
Abstract:
Non-linear finite element models accounting for large displacements have been used to investigate the behavior of steel built-up
shear links that had previously been tested using large-scale experiments. The links were designed using steel grades with
yield points ranging from high to low strengths. The objectives of the numerical analyses were to further investigate the
non-linear behavior and to correlate the numerical results with experimental observations. Elasto-plastic as well as cyclic
stress-strain material properties were incorporated to study the influence of material behavior on the overall shear link
response. Non-linear monotonie analyses of the shear links incorporating the cyclic stress-strain steel properties resulted
in similar trends in the response as the backbone curves recorded from the physical experiments. The numerical models of built-up
shear links utilizing structural grade steels closely correlated to the experimentally recorded shear strength. Models utilizing
low yield point steels overestimated the shear strength, which was caused by the characteristics of cyclic behavior of those
steels. The detailed numerical models also allowed for investigation of the plastic strain demands on the different components
of the link. It was shown that finite element models combined with appropriate stress-strain relationship may be used with
confidence to check the design of shear links of different steel grades and sectional geometries.