Special VM link element for modeling of shear–flexural interaction in frames

Abstract

In the special zones of frame elements, which are used for seismic energy dissipation, inelastic interaction among the internal forces needs to be considered more precisely. This paper describes a special element called a VM link element for modeling the shear–flexural interaction in the inelastic zones of beam elements. The element may be used in the any inelastic location of frames subjected to the monotonic or cyclic loadings. The inelastic shear and flexural deformations are considered by using the multi‐surfaces plasticity concept with dissimilar yield surfaces. A new kinematic hardening and new non‐associated flow rules are introduced for definition of the plastic deformations and managing the yield surfaces translations, respectively. The special VM link element is examined for some shear links, and it is shown that the proposed model predictions are in good agreement with existing test results. An eccentrically braced steel frame (EBF), subjected to a strong ground motion, is modeled by using the beam and the proposed VM link elements, and shear–flexural interaction is investigated. Copyright © 2007 John Wiley & Sons, Ltd.

Analytical study of special girder moment frames using a mixed shear–flexural link element

“…The proposed element is applied for modelling the middle ductile zone in the special girders of SGMFs. Some of the applications of this element were presented by Erfani and Kazemi (2006) and Kazemi and Erfani (2006) at recent conferences.…”

Damage-plasticity model for mixed hinges in steel frames

“…The proposed element is an extension of a previously developed element by Kazemi and Erfani [16], which was defined in force space without damage or softening consideration. A summary of the previous element and some of its applications is also presented in [17,18].…”

Lateral Reliability Assessment of Eccentrically Braced Frames Including Horizontal and Vertical Links Under Seismic Loading

“…More element models have been developed to model steel links and members in the EBFs. The model developed in [19,20] was improved in [21] by combining axial, shear, and flexural hinges in the elements to demonstrate the accuracy of the proposed approach. Alternative EBF systems were presented in [22] to improve the performance of structures by integrating a damping system to resist lateral loading.…”