丝织物编织结构与迎/背爆面组合对抗爆性能的影响OA

Aiming to the structural optimization requirements of flexible explosion-proof materials,this study systematically explored the mechanism by which the weaving configuration of silk fabrics and the combination mode of the front and back explosion-proof surfaces affected their explosion-proof performance.Based on the explicit dynamics theory,mesoscopic finite element models of Kevlar plain weave,twill weave and double-layer structure silk fabrics with a single filament cross-section of 0.15 cm×0.02 cm were established.The dynamic response processes of different structures under the same equivalent TNT explosion load were compared and analyzed through numerical simulation.The results show that the twill weave silk fabric has less deformation when it is to impacted,and can more effectively disperse the impact energy,and exhibits superior anti-explosion performance compared to the plain weave silk fabric.The deformation amount under the same time is 19.0%smaller than that of the plain weave silk fabric,and the pressure behind the silk mesh is 56.3%lower.Meanwhile,when the front facing the explosion is a plain weave silk fabric and the back facing is a twill weave silk fabric,the anti-explosion performance of double/multi-layer fabrics is the best.Compared with other combination methods,the impact pressure can be reduced by up to 39.4%at most.