| 复合材料层板圆形分层的屈曲 |
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| 引用本文： | 呼延晓智 刘方龙. 复合材料层板圆形分层的屈曲[J]. 复合材料学报, 1991, 8(2): 25-32 |
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| 作者姓名： | 呼延晓智 刘方龙 |
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| 作者单位： | 北京航空航天大学，北京航空航天大学 北京 100083，北京 100083 |
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| 摘 要： | 本文设分层发生在距层板表面不远处,由此建立了子层屈曲分析的力学模型,利用Ragleigh-Ritz能量法及通过选择能够表征层板拉—剪和弯—扭耦合效应效应的位移函数,导出了子层屈曲的特征方程,给出了几种铺层角度下,圆形子层临界应变随分层半径R,基层泊松比的变化规律和单向子层临界应变随铺层角变化规律.
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| 关 键 词： | 屈曲 圆形分层 层板 |
| 收稿时间： | 1988-05-01 |
BUCKLING OF A CIRCULAR SUBLAMINATE IN A COMPOSITE LAMINATE |
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| Huyan Xiaozhi and Liu FanglongBeijing University of Aeronautics and Astronautics. BUCKLING OF A CIRCULAR SUBLAMINATE IN A COMPOSITE LAMINATE[J]. Acta Materiae Compositae Sinica, 1991, 8(2): 25-32 |
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| Authors: | Huyan Xiaozhi and Liu FanglongBeijing University of Aeronautics and Astronautics |
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| Affiliation: | Huyan Xiaozhi and Liu FanglongBeijing University of Aeronautics and Astronautics |
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| Abstract: | The buckling of a circular delaminate near the surface of a thick la-minate is studied i : this paper.The thickness of the sublaminate is assu-med to be small compared with the total laminate thickness .The transver-se deflection including a bending-torsion and shear-Extension coupling terms is supposed and the Rayleigh-Ritz method is used for the analysis. Effects of the base laminate Poisson's ratio,radius of delaminate and la-yup on buckling slrair.s are discussed .The results show that (l)the buckling strair.s decrease when the radius of sublaminate increase and are indepen-dent on the Poisson's ratio; (2)the buckling strains, increase when the the base laminate Poisson's ratio increases; (3)if there is tension buckling strain is determined by the Poisson's ratio only. |
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| Keywords: | buckling circular sublaminate laminates |
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