摘要
以无穷长的复合材料层合曲板受阶跃均布侧压作用的非线性动力稳定性问题为研究内容，侧重分析了剪力效应以及不同铺层方向的各向异性效应对动临界载荷参数的影响。指出：①对于抗剪能力较弱的复合材料曲板，横向剪力的影响将显著降低临界载菏的值，因而不能忽略它的效应，否则，所得到的临界值将毫无意义；②纤维的方向对临界载荷的影响非常大，不同的铺层方向可能导致临界载荷参数值相差数倍。
This paper presents a study of the nonlinear dynamic stability of infinitely long laminated curved panels suUected to a total-area uniform step loading. Emphases are on the analysis for the transverse shear force and anisotropic effects due to ply-direction of fabric on the dynamic critical load parameter.It is seen that(1) the transverse shear force plays an important role in the reduction of critical load for a very weak transverse shear resistant capability of com- posite laminated curved panel; (2)the ply-directions of the fabric will significantly influence the critical load because its values are found to be very different even to several times for the different ply-angles
出处
《航空学报》
EI
CAS
CSCD
北大核心
1994年第4期410-415,共6页
Acta Aeronautica et Astronautica Sinica
关键词
层压板
剪力
非线性
动稳定性
laminate,transverse shear force,nonlinearity,dynamic stability
