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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Buckling and post-buckling of filament wound composite tubes under axial compression: Linear, nonlinear, damage and experimental analyses

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Almeida, Jr., Jose Humberto S. [1] ; Tonatto, Maikson L. P. [2] ; Ribeiro, Marcelo L. [3] ; Tita, Volnei [3] ; Amico, Sandro C. [4]
Total Authors: 5
[1] Leibniz Inst Polymerforsch Dresden eV, Composite Mat Dept, Hohe Str 6, D-01069 Dresden - Germany
[2] Univ Sao Joao Del Rei, Ctr Innovat & Technol Composite Mat CITeC, Praca Frei Orlando 170, BR-36307352 Sao Joao Del Rei, MG - Brazil
[3] Univ Sao Paulo, Sao Carlos Sch Engn, Dept Aeronaut Engn, Ave Joao Dagnone 1100, BR-13563120 Sao Carlos, SP - Brazil
[4] Univ Fed Rio Grande do Sul, PPGE3M, Ave Bento Goncalves 9500, P-91501970 Porto Alegre, RS - Brazil
Total Affiliations: 4
Document type: Journal article
Source: COMPOSITES PART B-ENGINEERING; v. 149, p. 227-239, SEP 15 2018.
Web of Science Citations: 14

Identification of the boundary between failure by buckling, collapse and material failure in cylindrical tubes under axial compression is still challenging. The focus of this research is to investigate the response of carbon/epoxy filament wound cylindrical tubes under axial compression. Three approaches have been studied: (i) linear buckling; (ii) nonlinear buckling; and (iii) progressive damage modeling (PDM). For that, analytical, numerical and experimental approaches have been followed. Key results show that thinner tubes fail by buckling followed by a post-buckling field, whereas material failure due to transverse compression and in-plane shear stresses occur for thicker tubes. Both analytical and linear numerical models predicted very well the critical buckling load for all {[}+/- alpha] tubes, and nonlinear buckling model satisfactorily predicted axial displacement over the loading history. For multilayered tubes, the developed damage model provided better predictions compared to the nonlinear buckling model. Furthermore, for thicker tubes, a hoop layer at the outermost, instead of middle or innermost, improves buckling/compressive resistance. (AU)

FAPESP's process: 15/13844-8 - Finite element formulation and delamination models for composite materials.
Grantee:Marcelo Leite Ribeiro
Support type: Regular Research Grants