Journal of Textile Research ›› 2021, Vol. 42 ›› Issue (07): 101-107.doi: 10.13475/j.fzxb.20201007707

• Textile Engineering • Previous Articles     Next Articles

Effect of cyclic loading treatment on creep behavior of polyvinyl chloride coated membrane

WANG Zexing(), LI Shuai, TAN Dongyi, MENG Shuo, HE Bin   

  1. College of Textile and Fashion, Hunan Institute of Engineering, Xiangtan, Hunan 411104, China
  • Received:2020-10-29 Revised:2021-03-08 Online:2021-07-15 Published:2021-07-22

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Abstract:

To further investigate the mechanism of loading process on the creep properties of coated membrane, the creep behavior of polyvinyl chloride (PVC) coated membrane after cyclic loading were evaluated, and the effects of cyclic number, peak cyclic stress and cyclic loading rate on the creep behavior and ability to retain the initial deformation in creep process were also analyzed. The results show that the creep mechanism of the coated membrane after different cyclic loading processes are basically the same, the creep behavior and ability to retain the initial deformation in creep process are governed by cyclic number, peak cyclic stress, and the cyclic loading rate. For the PVC coated membrane, increasing loading cycles, improving cyclic peak stress and decreasing loading rate are beneficial for improving the ability to retain the initial deformation in the creep process,and for reducing the maintenance workload of the membrane structure during its service time. However, it would prolong the cyclic loading period and increase the workload during the pretension stage in the construction process.

Key words: polyvinyl chloride, membrane material, woven fabric, creep behavior, cyclic loading

CLC Number: 

  • TS101.923

Fig.1

Diagram of strain-time curve during total experimental procedure"

Fig.2

Total creep strain curves of tested specimen after various loading cycles"

Fig.3

Initial creep strain curves (a) and creep strain increment curves (b) of specimens after various loading cycles"

Fig.4

Isochronous curves of relative deformation index and loading cycles"

Fig.5

Total creep strain (a), initial creep strain (b) and creep strain increment (c) curves of tested specimens under various cyclic peak stress"

Fig.6

Isochronous curves of relative deformation index and cyclic peak stress"

Fig.7

Total creep strain (a), initial creep strain (b) and creep strain increment (c) curves of tested specimens under various cyclic loading rate"

Fig.8

Isochronous curves of relative deformation index and cyclic loading rate"

Fig.9

Curves of relative deformation index under different cyclic loading conditions"

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