复杂载荷下复合材料对称层合板的椭圆形分层屈曲  

Buckling of elliptical delamination for symmetrical composite laminate subjected complex load

作　　者：温玄玲[1] 陈浩然[1] 成万植[1] 李戈兰 邱春图 

机构地区：[1]大连理工大学工程力学研究所

出　　处：《计算结构力学及其应用》1995年第2期143-151,共9页

基　　金：船舶工业国防科技应用基础研究基金

摘　　要：应用Ｒａｙｌｅｉｇｈ－Ｒｉｔｚ法对含有单个椭圆形分层的复合材料对称层板在压剪载荷联合作用下的脱层屈曲问题进行了分析计算。给出相应于不同的椭圆长短半轴之比ａ／ｂ值下及不同椭回主轴的偏角时，脱层屈曲的临界应变值。此计算考虑了层板的拉伸剪切藕合刚度影响及子层本身弯曲－扭转耦合刚度，和拉伸－弯曲耦合刚度的影响，给出有工程参考价值的计算结果。A Rayleigh-Ritz method is presented to determine the load or strain at which delamina-tion buckling will occur for a symmetrical composite laminate containing a single delamina-tion. This delamination is assumed to be elliptical in shape,with local axes of symmetrywhich may be at an angle a relative to the globle axes of the laminate. The laminate is suh-jected to complex loading,which include uniaxial and biaxial compression and shear. The crit-ical strain values of delamination buckling have been investigated for the delamination regionwith different a and ratio a/b of the major axis and the minor axis. The effects of possiblecoupling behavior of the delamination region have been considered.

关 键 词：层合板 复合材料 分层屈曲 载荷 

分 类 号：TB33[一般工业技术—材料科学与工程] TB301