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This article reports the trapezoid tearing behaviors of uncoated and coated woven fabrics in experimental and finite element analyses approaches. In experimental, trapezoid tearing behaviors of uncoated and coated woven fabrics were tested to obtain tearing load-displacement curves and tearing failure developments. The tearing strength and damage morphologies of the two kinds of fabrics were compared to find the tearing damage differences between uncoated and coated woven fabrics during the trapezoid tearing process. In finite element analysis, microstructure geometrical models of both the uncoated and coated woven fabrics were constructed to calculate the stress distribution and tearing failure propagation. There are good agreements between the finite element analysis results and those in experimental. Moreover, the influence of the coating on the trapezoid tearing properties was discussed. The tearing failure differences of the uncoated woven fabric and the base fabric in the coated woven fabric was also compared for finding the tearing failure mechanisms of the coated fabric. Such an investigation can be extended to the design of the coated woven fabric with high tearing strength.

This paper reports the puncture behaviors of woven fabrics from experimental and finite element analyses (FEAs) approaches. In the experimental approach, the puncture behaviors of three kinds of woven fabrics, plain woven, 2/2 twill woven, and 2/1 twill, were tested under quasi-static conditions and the puncture load-displacement curves of the fabrics were obtained. The puncture damage morphologies were also observed. In FEA simulation, the puncture damage evolutions were calculated at the microstructure level and compared with those in experimental approach. Good agreements between the experimental and FEA approaches were found. From the FEA results, it was found that the puncture damage includes three stages: fabric tension, weft and warp yarn slippage, and yarn breakage and pullout. It was also found that there are almost no differences when the puncture acts at the interweaving point or between interweaving point for the three kinds of woven fabric. It is expected that such an investigation could provide guidance to the design of technical woven fabrics, such as geotextiles, tufted carpet the background layer, and flexible pipeline tubes, which often suffer from the puncture damages.