蒙皮铺层形式对泡沫夹芯结构准静态压痕试验的影响  

EFFECTS OF FACE SHEET LAY-UP TO THE FOAM SANDWICH STRUCTURE SUBJECTED TO QUASI-STATIC INDENTATION

作　　者：魏浩[1] 朱凌[2] 王继辉[1] 

机构地区：[1]材料复合新技术国家重点实验室,武汉430070 [2]武汉理工大学绿色船舶与海工装备技术研究中心,武汉430063

出　　处：《玻璃钢／复合材料》2015年第9期47-51,共5页Fiber Reinforced Plastics/Composites

摘　　要：研究了准各向同性铺层泡沫夹芯结构蒙皮铺层形式对结构准静态压痕(QSI)试验的影响。通过对比结构吸能效率、失效机理以及底部面板失效挠度,发现方格布蒙皮试样失效主要以纤维断裂为主,含有单向布的试样失效主要以分层破坏为主,方格布与单向布混合铺层试样失效包含分层以及纤维断裂,具有较大的吸能效率。此外,底部蒙皮失效挠度与结构蒙皮以及夹芯结构性能相关,与吸能效率没有直接关系。In this paper, we tested quasi-isotropic face sheet foam sandwich structures with different kinds of lay-up face sheet under quasi-static indentation （QSI） test. Through analyzing different specimens＇ energy absorption efficiency, failure mechanism and bottom face sheet failure deflection, we could conclude that woven rov- ing specimens failed mainly by fiber breakage, while unidirectional woven roving specimens mainly in the form of delamination. However, specimens added woven roving to the surface of unidirectional woven roving or multi-axial fabric failure feature included both fiber breakage and delamination and with bigger energy absorption efficiency. Be- sides, the bottom face sheet failure deflection was restricted by the mechanical properties of face sheet and the whole structure, which had no straight relationship with the energy absorption efficiency.

关 键 词：准静态压痕 泡沫夹芯结构 准各向同性 吸能效率 

分 类 号：TB332[一般工业技术—材料科学与工程]