期刊
MATERIALS & DESIGN
卷 96, 期 -, 页码 431-438出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2016.02.054
关键词
Failure analyses; Buckling; Damage model; Finite element analysis; Filament winding
资金
- CAPES
- CNPq
- AEB (Brazilian Space Agency)
- Cenpes/Petrobras
- FAPESP [2015/13844-8]
In this work, damage and failure in carbon fiber reinforced epoxy filament wound composite tubes were thoroughly evaluated through a proposed damage model, which is able to identify different failure modes. Moreover, a non-linear finite element model based on the arc length method was developed. The tubes were manufactured via dry-filament winding using T700 towpregs, and subjected to external pressure tests to evaluate computational analyses. Numerical results indicated that the tubes with a diameter-to-thickness ratio (d/t) lower than 20:1 fail by buckling, whereas the tube [90 +/- 55(12)/90], which has a higher d/t ratio presented failure primarily driven by in-plane shear, with delaminations. These results were compared with experimental tests, and relative differences in external pressure strengths were lower than 8.4%. The developed model presented a low computational cost and a very good agreement with experimental results, being very attractive to both academic and industrial sectors. (C) 2016 Elsevier Ltd. All rights reserved.
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