动载与静载作用下残余应力对ARALL层板裂纹孔边分层影响的实验研究  

EXPERIMENTAL STUDY ON EFFECTS ON DELAMINATION NEAR CRACK OF ARALL BY RESIDUAL STRESS UNDER FATIGUE AND STATIC LOADS

作　　者：仲伟虹[1] 陈昌麒[1] 寇长河[1] 郑瑞琪[2] 

机构地区：[1]北京航空航天大学104教研室,北京100083 [2]北京航空材料研究所八室,北京100095

出　　处：《航空学报》1996年第2期196-201,共6页Acta Aeronautica et Astronautica Sinica

基　　金：国家自然科学基金资助课题

摘　　要：研究了疲劳载荷与静态拉伸条件下 ARALL层板孔边分层的状态 ,分析了不同残余应力对该层板孔边分层损伤的影响。结果表明 ,两种载荷条件下的分层破坏是完全不同的。疲劳载荷下裂纹扩展过程中伴随分层的典型的情况是呈对称双椭圆形 ,静态拉伸作用下层板边缘效应更加明显。The delamination near the centre crack of ARALL under fatigue load and static load is investigated, and the effects on delamination of different residual stresses are analyzed. The results show that the situations under the two kinds of loads are different. Under the fatigue load, the typical delamination with crack growth is symmetrical bi\|ellipse. But under the condition of static tensile, the edge\|effects become more evident. Applying a proper pre\|stress to the laminate can increase the ability of anti\|delamination damage.

关 键 词：复合材料 层离 残余应力 动载 静载 

分 类 号：TB330.1[一般工业技术—材料科学与工程] V214.8[航空宇航科学与技术—航空宇航推进理论与工程]