Modeling of shear walls using finite shear connector elements based on continuum plasticity
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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.
Keywordsshear walls wall diaphragms finite element modelling plastic shear connector analytical modelling experimental comparison
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The authors would like to give their sincere thanks for the financial support from the County Administrative Board in Norrbotten, the Regional Council of Västerbotten, and the European Union: European Regional Development Fund – Regional Structural Fund and Interregional Programmes.
- 2.Källsner B, Girhammar U A. Plastic design of partially anchored wood-framed wall diaphragms with and without openings. In: Proceedings CIB-W18 Meeting. Karlsruhe, Germany, 2005Google Scholar
- 3.Källsner B, Girhammar U A. Horizontal stabilising of light frame timber structures–Plastic design of wood-framed shear walls. SP Technical Research Institute of Sweden, SP Report 2008: 47, Stockholm, Sweden, 2009 (in Swedish)Google Scholar
- 4.Girhammar U A, Källsner B. Horizontal stabilisation of sheathed timber frame structures using plastic design methods–Introducing a handbook. Part 1: Design principles for horizontal stabilisation. Procedia Engineering, 2016, 161: 618–627Google Scholar
- 5.Girhammar U A, Källsner B. Horizontal stabilisation of sheathed timber frame structures using plastic design methods–Introducing a handbook. Part 2: Design of joints and anchoring devices. Procedia Engineering, 2016, 161: 628–635Google Scholar
- 6.Källsner B, Girhammar U A. Horizontal stabilisation of sheathed timber frame structures using plastic design methods–Introducing a handbook. Part 3: Basics of the plastic design method. Procedia Engineering, 2016, 161: 634–644Google Scholar
- 7.Källsner B, Girhammar U A. Horizontal stabilisation of sheathed timber frame structures using plastic design methods–Introducing a handbook. Part 4: Design in ultimate limit state. Procedia Engineering, 2016, 161: 645–654Google Scholar
- 14.Vessby J, Olsson A, Källsner B, Girhammar U A. Modelling aspects on wooden shear walls with mechanically fastened sheathing. In: Shear walls for multi-storey timber buildings by Johan Vessby, Licentiate Thesis, Report No. 44, School of Technology and Design, Växjö University, Sweden, 2008Google Scholar
- 15.Källsner B, Girhammar U A, Vessby J. Evaluation of two analytical plastic design models for light-frame shear walls. 12th World Conference on Timber Engineering, Auckland, New Zealand, July 16–19, 2012Google Scholar
- 16.Girhammar U A, Gustafsson P J, Källsner B. Finite element modelling of shear walls using connector shear elements based on continuum plasticity. In: Proceedings of the Tenth International Conference on Computational Structures Technology. Topping B H V, eds. Stirlingshire, Scotland: Civil-Comp Press, 2010Google Scholar
- 18.Fosci R O. Modelling the hysteretic response of mechanical connections for wood structures. In: Proceedings of World Conference on Timber Engineering. Whistler Resort, British Columbia, Canada, July 31–August 3, 2000Google Scholar
- 19.Ottosen N S, Ristinmaa M. The Mechanics of Constitutive Modeling. Elsevier, 2005Google Scholar
- 20.Girhammar U A, Bovim N I, Källsner B. Characteristics of sheathing-to-timber joints in wood shear walls. Proceedings 8th World Conference on Timber Engineering, Lahti, Finland, June, 14–17, 2004Google Scholar
- 22.Girhammar U A, Palm S. Tests on stud-to-rail joints in wood-framed shear walls. Umeå University, Faculty of Science and Technology, Department of TFE–Building Engineering, Report 2002:3, Umeå, Sweden, 2002 (in Swedish)Google Scholar
- 23.Austrell P E, Dahlblom O, Lindemann J, Olsson A, Olsson K G, Petersson H, Ristinmaa M, Sandberg G, Wernberg P A. CALFEM–A Finite Element Toolbox, Version 3.4. KFS in Lund AB, Sweden, 2004Google Scholar
- 24.Girhammar U A, Eltoft J, Palm S. Tests of Wood-Framed Shear Walls at Partial Anchorage With and Without Openings. Umeå University, Faculty of Science and Technology, Department of TFE–Building Engineering, Report 2003:1, Umeå, Sweden, 2003Google Scholar
- 25.Girhammar U A, Källsner B. Tests on Partially Anchored Wood-Framed Shear Walls. 8th World Conference on Timber Engineering, Lahti, Finland, 2004Google Scholar