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RISS 인기검색어
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- 저자 : Feizhou Shi (검색결과 1 건)
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Guangqiang Fang,Peng Qu,Zhengli Cao,Feizhou Shi 한국섬유공학회 2022 Fibers and polymers Vol.23 No.5
In this paper, the mechanical properties of a single-ply woven composites are investigated through a combinationof multiscale numerical simulation and experimental test. The tensile experiments of three woven structures with differentthread counts, 4.5+4.0, 5.5+7.0 and 5.5+5.0, are conducted. A multiscale numerical method is proposed in order tounderstand the influence mechanism of thread count on the mechanical properties. The numerical predictions have a goodagreement with the experimental results. Many unique characteristics of the single-ply woven composites have beenobserved, such as the clearly nonlinear mechanical behavior of samples with large thread count, the positive transversalnormal strain during the initial phase of longitudinal uniaxial tension and the breakage morphology in relation to threadcount. The M/L ratio is proposed in this paper to investigate the effect of the difference in the thread count between warp andfill direction on the mechanical behavior. The M/L ratio of thread count of 5.5+7.0 specimen is larger than 4.5+4.0 and5.5+5.0 by 38 % and 41 %, respectively, the corresponding M/T ratio of modulus is larger by 34 % and 29 %, and for strengthit is 23 % and 24 %. It is found that the increase of thread count in one direction improves the mechanical properties in thisdirection but reduces the equivalent elastic modulus and strength in the vertical direction. The simulated stress and straindistribution inside the RUC helps to better understand the influence mechanism of thread count on the mechanical propertiesof single-ply woven composites.
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