Shear Resistance Of Cold-Formed Steel Compound Wall With Openings

This paper mainly presents detailed results on the shear resistance of cold-formed steel stud walls with openings in residential structures by nonlinear finite element analysis based on consulting a lot of documents.In light of the actual engineering, the test specimen ,including assembled walls with single-gypsum and the other 13 walls with gypsum sheathing on the back and oriented strand board on the face, one of which is not open specimen, the remaining are openings, are designed.Nonlinear finite element analysis involving geometric large deformation and materials nonlinear is used to simulate all specimens under monotonic load in this paper. Members are modeled as shell elements shell181. The steel members are simply connected. The screws connecting of the sheathings to the frame are modeled through coupling methods. The equation resolution method is selected by ANSYS program automatically. The finite element analysis results are in good agreement with experimental data of the test specimen, so the finite element analysis method is correct. Via this method,the paper analyzes the influence of openings in the 3600 mm (W)×3000mm (H) cold-steel composited walls in the absence of openings and openings to shear-resistance. The analysis results show that the width of hole has greater influences to the shear-resistance and shear modulus of walls,while the height of hole has little influences.With the broaden of hole, the wall's shear-resistance and initial shear modulus have clearly decreased,but with the heighten of hole ,the shear-resistance and initial shear modulus have decreased not so clearly. Finally, according to research findings ,some reasonable proposals are obtained for designing of the composited walls with openings.