Journal
AEROSPACE SCIENCE AND TECHNOLOGY
Volume 121, Issue -, Pages -Publisher
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.ast.2022.107384
Keywords
Thermoplastic composite; Compression-after-impact; Internal damage; Local geometric imperfection; Postbuckling
Categories
Ask authors/readers for more resources
This paper investigates the postbuckling behavior of carbon fiber reinforced thermoplastic composite laminated plates under uni-axial compression-after-impact and proposes a physical model that considers both internal damage and local geometric imperfection caused by impact. Experimental data is compared with finite element numerical results to validate the method. The numerical results show that initial geometric imperfection, impact point position, plate width-to-thickness ratio, and boundary conditions significantly influence the postbuckling load-deflection curves of the laminated plates under CAI.
This paper investigates the postbuckling behavior of carbon fiber reinforced thermoplastic composite (CFRTPC) laminated plates under uni-axial compression-after-impact (CAI). A physical model is proposed where both internal damage and local geometric imperfection of the plate caused by impact are taken into account. The distributed damage and impacted region of the plate are determined by using Xray computed tomography analysis. An experiment-based approach is utilized to obtain the nonlinear constitutive law along with the stiffness degradation for the CFRTPC laminated plates. The experiments for two CFRTPC laminated plates under uni-axial compression-after-impact are carried out firstly. Then the experimental data are compared with finite element numerical results to validate the present method. The numerical results reveal that the postbuckling load-deflection curves of CFRTPC laminated plates under CAI are significantly influenced by the initial local geometric imperfection, impact point position, plate width-to-thickness ratio and boundary conditions. In contrast, the initial local geometric imperfection and impact point position only have a small effect on the postbuckling load-shortening curves of CFRTPC laminated plates under CAI.(c) 2022 Elsevier Masson SAS. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available