Buckling and post-buckling in filament wound composite tubes under transverse compression

José Humberto S. Almeida, Marcelo L. Ribeiro, Volnei Tita, Hugo Faria, António T. Marques, Sandro C. Amico

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussaKonferenssiesitysScientificvertaisarvioitu

2 Sitaatiot (Scopus)

Abstrakti

Transverse compression (ring deflection) tests were simulated in composite tubes through nonlinear finite element models based on a modified Riks algorithm, which uses the arc-length method. Progressive failure was evaluated in detail through a proposed damage model, able to identify the failure mode. In all composite tubes tested, localized stress concentration points developed in the transverse plane caused by contact load plates/composite, producing non-linearity in the load vs. displacement curves (P-). The failure mode of these tubes involves a complex combination of mechanisms, namely transverse tensile, transverse compression and in-plane shear stresses, where the region of the specimen in contact with the load plates present the most damaged area. Thus, matrix tensile and matrix compression induced by shear near the loading zones dominate damage and failure of the specimens. Buckling and post-buckling of tubes are highly influenced by the fiber orientation, whereas the tube with reinforcement orientation parallel to the loading plates-to-specimens contact line withstanding the highest buckling load level. On the other hand, specimens wound at [±45]5 and [±75]5 present a divergence point, since they support a portion of the load after buckling is reached, characterizing a post-buckling behavior.

AlkuperäiskieliEnglanti
TilaJulkaistu - 1 tammik. 2015
OKM-julkaisutyyppiEi oikeutettu
TapahtumaINTERNATIONAL CONFERENCE ON COMPOSITE MATERIALS - Copenhagen, Tanska
Kesto: 19 heinäk. 201524 heinäk. 2015
Konferenssinumero: 20

Conference

ConferenceINTERNATIONAL CONFERENCE ON COMPOSITE MATERIALS
LyhennettäICCM
Maa/AlueTanska
KaupunkiCopenhagen
Ajanjakso19/07/201524/07/2015

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