Modeling of shear walls using finite shear connector elements based on continuum plasticity
Ulf Arne GIRHAMMAR , Per Johan GUSTAFSSON , Bo KÄLLSNER
Front. Struct. Civ. Eng. ›› 2017, Vol. 11 ›› Issue (2) : 143 -157.
Modeling of shear walls using finite shear connector elements based on continuum plasticity
Light-frame timber buildings are often stabilized against lateral loads by using diaphragm action of roofs, floors and walls. The mechanical behavior of the sheathing-to-framing joints has a significant impact on the structural performance of shear walls. Most sheathing-to-framing joints show nonlinear load-displacement characteristics with plastic behavior. This paper is focused on the finite element modeling of shear walls. The purpose is to present a new shear connector element based on the theory of continuum plasticity. The incremental load-displacement relationship is derived based on the elastic-plastic stiffness tensor including the elastic stiffness tensor, the plastic modulus, a function representing the yield criterion and a hardening rule, and function representing the plastic potential. The plastic properties are determined from experimental results obtained from testing actual connections. Load-displacement curves for shear walls are calculated using the shear connector model and they are compared with experimental and other computational results. Also, the ultimate horizontal load-carrying capacity is compared to results obtained by an analytical plastic design method. Good agreements are found.
shear walls / wall diaphragms / finite element modelling / plastic shear connector / analytical modelling / experimental comparison
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Higher Education Press and Springer-Verlag Berlin Heidelberg
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