点击次数：

所属单位：航空学院

发表刊物：APPLIED COMPOSITE MATERIALS

关键字：3D woven hollow integrated sandwich composites Tensile properties Theoretical method Finite element

摘要：Tensile properties and failure mechanism of 3D woven hollow integrated sandwich composites are investigated experimentally, theoretically and numerically in this paper. Firstly, the tensile properties are obtained by quasi-static tensile tests on the specimens in two principal directions of the sandwich panels, called warp and weft. The experimental results shows that the tensile performances of the warp are better than that of the weft. By observing the broken specimens, it is found that the touch parts between yarns are the main failure regions under tension. Then, a theoretical method is developed to predict the tensile properties. By comparing with the experimental data, the accuracy of the theoretical method is verified. Simultaneously, a finite element model is established to predict the tensile behavior of the composites. The numerical results agree well with the experimental data. Moreover, the simulated progressive damages show that the contact regions in the warp and weft tension are both the initial failure areas.

ISSN号：0929-189X

是否译文：否

发表时间：2017-10-01

合写作者：刘畅,Cai, Deng'an,Lu, Fangzhou

通讯作者：周光明