摘要
借助有限元软件ANSYS建立了三维中空夹芯复合材料的结构模型,并进行了侧拉性能研究。利用该模型,从细观角度出发,探讨了材料在1mm侧拉位移载荷作用下复合材料各组分的应力、应变分布。结果表明:三维中空夹芯复合材料在侧拉载荷作用下,上下面板中经、纬纱线交织处应力最大,最容易发生侧拉破坏;芯材应力最小,不容易发生侧拉破坏。复合材料在承受侧拉载荷作用时,纤维起主要承载作用,树脂起次要作用。在侧拉载荷作用下材料的破坏模式主要为树脂破裂。
A new structural model of three-dimensional hollow sandwich composites （3D composites） was built to study side tension properties based on finite element software ANSYS. The distribution of stress ＆ strain on the 3D composites was discussed under side tension loads of 1 mm displacement by using the model. The results showed that the maximum value of stress occured on the up and down face-sheet interweave places, where the 3D composites damaged easily. The minimum value of stress occured in the piles, where the 3D composites damaged difficultly. The main loads were supported by fibers and the minor loads were supported by resin. The main failure mode of the 3D composites are resin fracture when the 3D composites suffer side tension loads.
基金
国家自然科学基金(51302110)
江苏省产学研联前瞻性联合研究项目(BY2013015-31)
关键词
中空夹芯复合材料
侧拉性能
有限元软件ANSYS
应力
应变
破坏模式
hollow sandwich composites, side tension properties, finite element software ANSYS, stress, strain, failure mode
