Modelling the viscoelastic compaction behavior of 3D stitched carbon fabric with different stitching parameters
Modelling the viscoelastic compaction behavior of 3D stitched carbon fabric with different stitching parameters
复制标题
对具有不同缝合参数的 3D 缝合碳织物的粘弹性压实行为进行建模
DOI：
10.1016/j.coco.2020.100410
复制
发表时间：
2020-10
影响因子：
8
通讯作者：
Han Xu
中科院分区：
文献类型：
--
作者：
He Yujia;Mei Ming;Wei Kai;Duan Shuyong;Yang Xujing;Han Xu
织物在压实状态下的粘弹性行为对织物增强复合材料的预成型过程至关重要。本文首先提出了一个粘弹性模型来描述不同缝合参数下三维缝合碳纤维织物的压缩和松弛行为。通过压实试验对模型进行了验证。所建立的粘弹性模型与实验结果吻合良好，并有效地捕捉应力演化。在压缩阶段，弹簧单元的弹性模量被证实在压缩应力的快速增长中起主导作用。缝合空间的减小导致纤维体积分数的提高。相应地，弹簧元件的弹性模量显著增大。在松弛阶段，减小的缝合空间和对角缝合图案减小了织物中的粘性应力，导致第一和第二麦克斯韦元件的应力松弛比减小。弹性应力松弛比的增大表明松弛能力的减弱。由于缝合线的约束作用主要作用在平行光纤上，因此第二麦克斯韦元件的延迟时间远小于第一麦克斯韦元件的延迟时间。粘弹性模型为研究三维缝合碳纤维织物的粘弹性行为，特别是缝合参数对三维缝合碳纤维织物的影响机理提供了重要的理论依据。
The viscoelastic behavior of fabric under compaction is of crucial importance to the preforming process of fabric reinforced composites. Here, a viscoelastic model was originally proposed to characterize the compression and relaxation behavior for the 3D stitched carbon fabric with different stitching parameters. The compaction experiments were conducted to validate the proposed model. The established viscoelastic model agrees well with the experimental results and effectively captures the stress evolution. In the compression stage, the elastic modulus of the spring element is confirmed to play a dominating role in the rapid growth of compressive stress. The reduction of stitching space leads to the enhancement of the fiber volume fraction. Correspondingly, the elastic modulus of the spring element is remarkably enlarged. In the relaxation stage, the decreasing stitching space and the diagonal stitching pattern reduce the viscous stress in the fabric, resulting in the reduction the stress relaxation ratio of the first and second Maxwell elements. The enhanced elastic stress relaxation ratio indicates the weakened relaxation ability. As the restriction effect of the stitching thread primarily acts on the parallel fibers, the delay time of the second Maxwell element is much smaller than the delay time of the first Maxwell element. The viscoelastic model provides a significant insight into the viscoelastic behavior, especially the mechanism and influence of the stitching parameters on the 3D stitched carbon fabric.
登录
查看更多内容
DOI：
10.1016/j.compositesa.2016.04.017
发表时间：
2016-07
影响因子：
8.7
作者：
J. Renaud;N. Vernet;É. Ruiz;L. L. Lebel-L.
通讯作者：
J. Renaud;N. Vernet;É. Ruiz;L. L. Lebel-L.
DOI：
10.1016/j.compositesa.2018.03.036
发表时间：
2018-06
期刊：
Composites Part A: Applied Science and Manufacturing
影响因子：
--
作者：
Rodrigue Stéphane Mbakop;G. Lebrun;F. Brouillette
通讯作者：
Rodrigue Stéphane Mbakop;G. Lebrun;F. Brouillette
影响因子：
9.1
作者：
K. Tan;A. Yoshimura;N. Watanabe;Y. Iwahori;T. Ishikawa
通讯作者：
K. Tan;A. Yoshimura;N. Watanabe;Y. Iwahori;T. Ishikawa
DOI：
10.1016/j.compositesa.2014.12.012
发表时间：
2015-04-01
影响因子：
8.7
作者：
Yudhanto, Arief;Lubineau, Gilles;Hoshi, Hikaru
通讯作者：
Hoshi, Hikaru
影响因子：
3.1
作者：
K. Khan;R. Umer
通讯作者：
K. Khan;R. Umer