各向同性、各向异性材料冲击应力波传播特性研究  

Characteristics of transmission of impact stress waves upon anisotropic or isotropic materials

作　　者：曹晚霞 林兰天[1] 陈春敏[1] 蒋瑾[1] 高琮[1] 

机构地区：[1]上海工程技术大学,上海201620

出　　处：《上海纺织科技》2017年第4期5-9,共5页Shanghai Textile Science & Technology

摘　　要：选择有机玻璃板为各向同性材料、内含玻璃纤维机织物的环氧树脂板为各向异性材料,有规则地设置PVDF传感器群,自主搭建冲击应力波传播规律测试平台,通过试验研究平台材质、纱线排列方向、薄板叠层与单块厚板对冲击应力波传播的影响。结果表明:内含纱线有序排列的环氧树脂板比有机玻璃板具有更快的冲击应力波传播速度;冲击应力波沿纱线排列方向传播速度是沿纱线45°方向传播速度的1.15倍;相同厚度下,冲击应力波在薄板叠层的传播速度比单块厚板慢。Taking organic glass sheet as an isotropic materials and epoxy resin （containing woven fabrics） as an anisotropic material, a testing platform for stress wave propagation law is self-established by setting PVDF sensors group regularly. The effects of platform material, orientations of yarns, thin lamination and single thick plate on impact stress wave spread are studied. The results indicate that epoxy resin containing well-orientated yarn has faster speed than the organic glass sheet. The rate of transmission of shock stress wave along the direction of well-orientated yarn is 1.15 times to that of along 45° of the direction of well-orientated yarn. With the same thickness, thin lamination has slower speed than single thick plate.

关 键 词：各向同性 各向异性 环氧树脂 冲击应力 波传播速度 

分 类 号：TB301[一般工业技术—材料科学与工程]