Study on Deformation Performance of PVC Membrane Materials under Biaxial Cyclic Tensile Loads

Abstract:

This article presents the mechanical properties of PVC coated fabrics under biaxial cyclic tensile loads. Tests of PVC at five load ratios in the warp and weft directions, which are 0:1, 1:2, 1:1, 2:1 and 1:0 respectively, were carried out, and tensile performances of the samples under biaxial tensile loads were analyzed. The test results show that the PVC membrane is highly nonlinear and orthotropic under biaxial tensile loads. With the increase of loading cycles, the total residual strain is nearly unchangeable and the hysteresis curve becomes stable. Slope of warp curve is larger than weft curves, and the weft loop area is greater than the warp one with the same load ratio. The generalized poisson ratio changes due to variations of the load ratio (R). when R<1, the experimental values and theoretical values of the generalized poisson's ratio are negative. When R≥1, generalized poisson's ratios tend to be constant, When the load ratio are 0:1 and 1:0, the curves become straight lines.

• Periodical: Advanced Materials Research (Volumes 479-481)
• Pages: 36-40
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.479-481.36
• Online since: February 2012
• Authors: Jian Wen Chen, Hong Qing Hou, Wu Jun Chen
• Keywords: Biaxial Tensile Test, Generalized Poisson's Ratio, Hysteretic Curve, Nonlinear

References

[1] Day A.S. Stress-strain equations for non-linear behavior of coated woven fabrics. Proc. LASS symposium: shells, membranes and space frames. Osaka. Elsevier, Amsterdam,1986:17-24.

[2] Y.TANK, R.BARNESM. Numerical representation of stress-strain relations for coated fabrics [C]Institution of Structural Engineers Symposium on the Design of Air Supported Structures, Bristo. 1980: 162-174.

[3] J.NI, A.LUOR, L. CHENY.Evolution law of hysteresis curve and deformation characteristics of PVC membranematerials under cyclic biaxial loading [C]The Fifth International Conference on NonlinearMechanics. Shangha:ShanghaiUniversity Press, 2007:817-822.

[4] C.Galliot, H.R. Luchsinger.A simple model describing the non-linear biaxial tensile behavior of pvc-coated polyester fabics for use in finite element analysis. Comput strct, 2009, vol,90:438-447.

DOI: 10.1016/j.compstruct.2009.04.016

[5] Jing Li. Research and engineering application of PVC memerane materials under biaxial tensile load,D. Shanghai University, (2008) (in chinese).

[6] Honglei Yi, Xin Ding And Shouhui Chen. Engineering Mechanics,(2006) (in chinese).

[7] Wujjun Chen. Membrane structure design.(China Building Industry Press, Beijing 2005). [8]Qingshan Yang, Yinan Jiang. Cable-membrane structure analysis and design.(Science Press, Beijing 2003). (in chinese).

[9] Tian Lian, Lu Guo. Experimental study on mechanical properties of membranes.(China Academy of Building Research, Beijing 1993). (in chinese).

[10] Yingying Zhang, Jianv Ni, Qilin Zhang. Journal of Hunan University.Vol.11 (2011).p.44

[11] Yingying Zhang, Lu Chen, Qilin Zhang. Applied Mechanics And Materials. vol. 44-47 (2011). P.3092-3095.

[12] Wujun Chen, Yafang Tang. Spatial Structures,Vol.13 (2007).p.37