Comparison of Constant-Force Increment and Constant-Rate Loading Protocols in Biaxial Tests of Coated Fabrics
Publication: Journal of Materials in Civil Engineering
Volume 29, Issue 11
Abstract
Biaxial tension testing is an increasingly accepted tool to understand the mechanical behavior of architectural coated fabric membrane materials. However, different loading protocols in biaxial tests result in diverse results. This study investigates the different results between constant-force increment (CFI) and constant-rate (CR) loading protocols. Different loading procedures were proposed on a self-made biaxial tension tester to conduct systematic experiments. The mechanical behavior of a typical fabric was investigated by both CFI and CR loading. The stress-strain curves and their mechanical characteristics were compared. On the basis of test data, the authentic weft stress values in the CR loading protocol were observed to be 20% lower than the nominal load value. The elastic modulus determined by CR loading was significantly larger than that acquired by CFI loading. An obvious viscous effect is seen in the unloading stage under CFI loading. This did not arise under CR loading. Future work might focus on material to further strengthen the conclusion.
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Acknowledgments
The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China (Nos. 51478264, 51278299, and 51608320). Ligang Wang took part in conducting experiments and did preliminary data analysis. The authors acknowledge with thanks this help and additional help from others unmentioned.
References
Ambroziak, A. (2015). “Mechanical properties of Precontraint 1202S coated fabric under biaxial tensile test with different load ratios.” Constr. Build. Mater., 80(1), 210–224.
Ansell, M. P., Barnes, M., and Williams, C. (1984). “Structural properties test for coated fabrics.” Conf. on the Design of Air Supported Structures, Institution of Structural Engineering, Bristol, U.K., 35–45.
ASCE. (2010). “Tensile membrane structure.” ASCE/SEI 55-10, Reston, VA.
ASTM. (2015). “Standard test method for coated and laminated fabrics for architectural use.” ASTM D4851-07, West Conshohocken, PA.
Bartko, M., Molleti, S., and Baskaran, A. (2016). “In situ measurements of wind pressures on low slope membrane roofs.” J. Wind Eng. Ind. Aerodyn., 153(1), 78–91.
Bassett, R. J., Postle, R., and Pan, N. (1999). “Experimental methods for measuring fabric mechanical properties: A review and analysis.” Text. Res. J., 69(11), 866–875.
Birchall, M. (2015). “Recent developments in architectural fabric structures in Europe: The design and construction of the London 2012 Olympic Stadium and its context in the European fabric structures market.” Chapter 22, Fabric structures in architecture, Woodhead Publishing, Sawston, U.K., 773–817.
Blum, R., and Bögner-Balz, H. (2002). “Evaluation method for the elastic moduli.” ⟨http://www.tensient.com/files/TenSiNet_Publications/TensiNews3_2002_09-1.pdf⟩ (Sep. 1, 2002).
Blum, R., Bögner-Balz, H., and Köhnlein, J. (2016). “On the mechanical behaviour of ETFE-films: Elastic range, yielding conditions, break determined by different test methods and the influence of the results on the analysis of ETFE-structures.” Procedia Eng., 155(1), 496–506.
Bögner-Balz, H., Blum, R., and Köhnlein, J. (2015). “Structural behaviour of fabricsand coatings forarchitectural fabric structures.” Chapter 4, Fabric structures in architecture, Woodhead Publishing, Sawston, U.K., 123–157.
Bridgens, B. N., and Gosling, P. D. (2003). “Biaxial fabric testing to determine in-situ material properties.” Textile composites and inflatable structures, E. Oñate and B. Kröplin, eds., Springer Science & Business Media, Berlin, 136–141.
Bridgens, B. N., Gosling, P. D., and Birchall, M. J. S. (2004). “Tensile fabric structures: Concepts, practice and developments.” Struct. Eng., 82(14), 21–27.
Bridgens, B. N., Gosling, P. D., Jou, G. T., and Hsu, X. Y. (2012). “Inter-laboratory comparison of biaxial tests for architectural textiles.” J. Text. Inst., 103(7), 706–718.
Chen, G., Lin, Q., Chen, S., and Chen, X. (2016). “In-plane biaxial ratcheting behavior of PVDF UF membrane.” Polym. Test, 50(1), 41–48.
Chen, J. W., and Chen, W. J. (2014). “Biaxial tensile properties and elastic constants evaluation of envelope material for airship.” J. Southeast Univ., 30(4), 467–474.
Chen, J. W., and Chen, W. J. (2016). “Central crack tearing testing of laminated fabric Uretek3216LV under uniaxial and biaxial static tensile loads.” J. Mater. Civil Eng., 04016028.
Chen, J. W., Chen, W. J., Zhao, B., and Yao, B. (2015). “Mechanical responses and damage morphology of laminated fabrics with a central slit under uniaxial tension: A comparison between analytical and experimental results.” Constr. Build. Mater., 101(1), 488–502.
Chen, S., Ding, X., Fangueiro, R., Yi, H., and Ni, J. (2008). “Tensile behavior of PVC-coated woven membrane materials under uni- and bi-axial loads.” J. Appl. Polym. Sci., 107(3), 2038–2044.
Chen, W. J. (2005). Design of membrane structure engineering, China Architecture & Builidng Press, Beijing.
CSCS (China Steel Construction Society). (2015). “Technical specification for membrane structures.” CECS 158: 2015, China Planning Press, Beijing.
Dinh, T. D., et al. (2015). “A study of tension fabric membrane structures under in-plane loading: Nonlinear finite element analysis and validation.” Compos. Struct., 128(1), 10–20.
Dinh, T. D., Rezaei, A., Laet, L. D., Mollaert, M., Hemelrijck, D. V., and Paepegem, W. V. (2014). “A new elasto-plastic material model for coated fabric.” Eng. Struct., 71(1), 222–233.
Foster, B., and Mollaert, M. (2004). European design guide for tensile surface structures, Tensinet, Luxembourg.
Fukuda, S., Miyauchi, H., Katou, N., and Tanaka, K. (2011). “Behavior of mechanically anchored waterproofing membrane exposed in typhoon at Miyako Island. 5: Behavior of waterproofing membrane in high wind velocity.” J. Struct. Constr. Eng., 1, 2077–2084.
Galliot, C., and Luchsinger, R. H. (2009). “A simple model describing the non-linear biaxial tensile behaviour of PVC-coated polyester fabrics for use in finite element analysis.” Compos. Struct., 90(4), 438–447.
Galliot, C., and Luchsinger, R. H. (2010). “The shear ramp: A new test method for the investigation of coated fabric shear behavior. II: Experimental validation.” Compos. Pt. A-Appl. Sci. Manuf., 41(12), 1750–1759.
Galliot, C., and Luchsinger, R. H. (2011). “Determination of the response of coated fabrics under biaxial stress: Comparison between different test procedures.” Int. Conf. on Textile Composite and Inflatable Structures, ECCOMAS, Barcelona, Spain, 301–320.
Jackson, A. L., Bridgens, B. N., and Gosling, P. D. (2010). “A new biaxial and shear protocol for architectural fabrics.” Symp. Int. Association for Shell and Spatial Structures, Universidad Politecnica de Valencia, Valencia, Spain.
Karpushkin, E. A., Artemov, M. V., and Sergeyev, V. G. (2016). “Effect of biaxial stretching on the ion-conducting properties of Nafion membranes.” Mendeleev Commun., 26(2), 117–118.
Kim, J. Y., and Lee, J. B. (2002). “A new technique for optimum cutting pattern generation of membrane structures.” Eng. Struct., 24(6), 745–756.
King, M. J., Jearanaisilawong, P., and Socrate, S. (2005). “A continuum constitutive model for the mechanical behavior of woven fabrics including slip and failure.” Int. J. Solids Struct., 42(13), 3867–3896.
Kronenburg, R. (2015). “Introduction: The development of fabric structures in architecture.” Chapter 1, Fabric structures in architecture, Woodhead Publishing, Sawston, U.K., 1–21.
Li, Y. (2007). Study and application on mechanical properties of membrane material and structures, Tongji Univ., Shanghai, China.
Liu, L. B., Lv, M. Y., and Xiao, H. D. (2014). “Tear strength characteristics of laminated envelope composites based on single edge notched film experiment.” Eng. Fract. Mech., 127(1), 21–30.
Long, A. C. (2005). Design and manufacture of textile composites, CRC Press, Boca Raton, FL.
Maurin, B., and Motro, R. (1998). “The surface stress density method as a form-finding tool for tensile membranes.” Eng. Struct., 20(8), 712–719.
MSAJ (Membrane Structures Association of Japan). (1995). “Testing method for elastic constants of membrane materials.” M-02-1995, Tokyo.
Pargana, J. B., Lloyd-Smith, D., and Izzuddin, B. A. (2007). “Advanced material model for coated fabrics used in tensioned fabric structures.” Eng. Struct., 29(7), 1323–1336.
Philipp, B., Wüchner, R., and Bletzinger, K. U. (2016). “Advances in the form-finding of structural membranes.” Procedia Eng., 155(1), 332–341.
Punurai, W., Tongpool, W., and Héctor, M. J. (2012). “Implementation of genetic algorithm for optimum cutting pattern generation of wrinkle free finishing membrane structures.” Finite Elem. Anal. Des., 58(8), 84–90.
Reinhardt, H. W. (1976). “On the biaxial testing and strength of coated fabrics.” Exp. Mech., 16(2), 71–74.
Scotta, R., Lazzari, M., Stecca, E., Massimo, R. D., and Vitaliani, R. (2016). “Membranes with embedded photovoltaic flexible cells: Structural and electrical performances under uniaxial and biaxial stresses.” Compos. Struct., 157(1), 111–120.
Simón-Allué, R., Cordero, A., and Peña, E. (2014). “Unraveling the effect of boundary conditions and strain monitoring on estimation of the constitutive parameters of elastic membranes by biaxial tests.” Mech. Res. Commun., 57(1), 82–89.
Wang, L. G. (2015). Experimental technology for tri-tension of fabric joint and bi-extension of fabric and experimental study, Shanghai Jiao Tong Univ., Shanghai, China.
Yoshino, T., and Kato, S. (2016). “Viscous characteristics of ETFE film sheet under equal biaxial tensions.” Procedia Eng., 155(1), 442–451.
Zhang, Y., Xia, Z., and Ellyin, F. (2005). “Nonlinear viscoelastic micromechanical analysis of fibre-reinforced polymer laminates with damage evolution.” Int. J. Solids Struct., 42(2), 591–604.
Zhang, Z., and Chen, X. (2009). “Multiaxial ratcheting behavior of PTFE at room temperature.” Polym. Test, 28(3), 288–295.
Zhu, B., Yu, T. X., and Tao, X. M. (2007). “An experimental study of in-plane large shear deformation of woven fabric composite.” Compos. Sci. Technol., 67(2), 252–261.
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Published In
Journal of Materials in Civil Engineering
Volume 29 • Issue 11 • November 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: Nov 3, 2016
Accepted: May 25, 2017
Published online: Sep 5, 2017
Published in print: Nov 1, 2017
Discussion open until: Feb 5, 2018
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