SHEAR-FLEXURAL INTERACTION IN ANALYSIS OF REDUCED WEB SECTION BEAMS USING VM LINK ELEMENT

Reduced web section beams in shear-yielding moment-resistant steel frames are used forenergy dissipating of earthquakes. the finite element analysis indicates that failure mode of thesebeams are governed by the combination of shear force and flexural moment. therefore the analysis offrames with reduced web section beams needs consideration of shear-flexural interaction in thosesections. in the present paper, modeling and analysis of reduced web section beams are investigatedby using a special elelnent which is called vm link element. the elastic and inelastic shear andflexural deformations and tangential stiffnesses in this link element are considered by using the multisurfacesplasticity concept with dissimilar yield surfaces. the developed vm link element isexamined for some reduced web section beams and it is shown that the results have a good agreementvith the finite element results.