Damage and failure in carbon/epoxy filament wound composite tubes under external pressure: Experimental and numerical approaches. (15th April 2016)

• Record Type: Journal Article
• Authors: Almeida, José Humberto S.; Ribeiro, Marcelo L.; Tita, Volnei; Amico, Sandro C.
• Is Part Of: Materials & design. Volume 96(2016)
• Page Start: 431
• Page End: 438
• Publication Date: 2016-04-15
• Subjects: Failure analyses -- Buckling -- Damage model -- Finite element analysis -- Filament winding; Materials -- Periodicals; Engineering design -- Periodicals; Matériaux -- Périodiques; Conception technique -- Périodiques; Electronic journals; 620.11
• DOI: 10.1016/j.matdes.2016.02.054
• Languages: English
• ISSNs: 0264-1275

Abstract

Abstract: 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 ± 5512 /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. Graphical abstract: Highlights: A novel damage model for composite laminates applied for analyzing composite tubes Effect of geometrical parameters on the collapse behavior of composite tubes Advanced carbon/epoxy composite tubes manufactured by dry-filament winding