一种复合材料层合板孔边单层应力计算方法

Calculation of monolayer stress of hole edge in composite laminated plate

基于复合材料经典层合板理论和各向异性板理论,探讨了带圆孔复合材料层合板受复杂面内载荷作用时层合板内孔边不同铺层角的单层正轴应力计算方法。先将复合材料层合板简化为均质的正交各向异性板,采用各向异性板圆孔边应力公式分别计算拉伸和剪切单独作用时孔边的平均应力和应变,然后叠加获得层合板孔边中面应变,最终获得层合板孔边不同铺层角单层的正轴应变和应力。本文方法计算结果与ANSYS软件计算结果吻合较好。

Based on the classical laminate theory and anisotropic plate theory,a calculation method of normal axial monolayer stress of composite laminated plates with different angles of laying direction under complex in-plane loading was discussed.Firstly,the composite laminated plate was simplified as anisotropic plate.The average stress and strain of the hole edge was calculated by using the stress formula of circular hole edge of anisotropic plate under the action of tensile and shear,respectively,and then the strain of the hole edge of the laminated plate was obtained by superposition.Finally,the normal axial strain and stress of the single layer with different orientation angles on the hole edge of laminated plate were obtained.The results of stress calculation are in good agreement with those of ANSYS.