Multiscale modeling of the low-velocity impact and compression after impact behaviors of rib-stiffened plain woven composites

被引：0
作者：
Wang, Weihan [1 ]
Hou, Yuliang [1 ]
Zhao, Qiaoli [2 ]
Liu, Yutong [3 ]
Li, Cheng [1 ]
机构：
[1] School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou
[2] Zhongyuan-Petershurg Aviation College, Zhongyuan University of Technology, Zhengzhou
[3] School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2024年 / 43卷 / 12期
关键词：
compression after impact; low-velocity impact; multiscale models; plain woven composites; rib-stiffened panel;
D O I：
10.13465/j.cnki.jvs.2024.12.013
中图分类号：
学科分类号：
摘要：
This study proposes multiscale models to investigate the low-velocity impact (LVI) and compression after impact (CAI) behaviors of plain woven composite (PWC) panels stiffened by T- and I-shaped ribs. Representative volume elements (RVEs) were constructed at the microscale and mesoscale to compute the effective properties of carbon-fiber yarns and PWC. Besides, to improve the computational efficiency without sacrificing computational accuracy, an equivalent cross-ply laminate (ECPL) cell was introduced to represent the woven architecture using a local homogenization approach. Multiscale models of PWC panels stiffened by T- and I-shaped ribs were constructed to investigate the mechanical behavior and damage mechanisms. Initially, experimental and numerical tests with 8 J, 10 J and 12 J impact energies were performed to examine the LVI behavior of PWC rib-stiffened panels. Subsequently, the post-impact compressive behavior and properties were assessed by experimental and numerical CAI tests on these impacted panels. The dissimilarities between the experimental and numerical results are less than 6%, confirming the reliability of the proposed multiscale models. Moreover, the panels stiffened by an I-shaped rib were found to exhibit better resistance to the compressive strength reduction due to LVI events. Besides, the primary damage modes of rib-stiffened PWC panels under LVI loads are matrix cracking and fiber breakage. In CAI cases, the existing impact damages are prone to lead to severe delamination within the rib-stiffened panels and accelerate final failure. © 2024 Chinese Vibration Engineering Society. All rights reserved.
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页码：109 / 117and202
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