期刊
COMPOSITE STRUCTURES
卷 108, 期 -, 页码 584-599出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2013.09.060
关键词
Crashworthiness; Buckling; Thin composite shells; Conical frusta; FEA
The quasi-static axial compression of thin-walled E-glass fibre/epoxy resin reinforced (GFRP) composite conical frusta was carried out to study the crashworthiness of conical shells. The hollow frustrated E-glass fibre reinforced polymer (GFRP) conical specimens having semi-apical angle ranging from 15 degrees to 27 degrees were fabricated using random ply chopped, plain woven roving cross ply [0/90], and uni-directional angle ply [+/-60 degrees] oriented mats to the required dimensions by hand layup process. Quasi-static axial compression load was applied over the small end of the conical specimen with a crosshead speed of 2 mm/min using Universal Testing Machine (UTM). From the experiment results, the load deformation characteristics of thin GFRP composite conical shells were analyzed and the results were validated through finite element analysis package ABAQUS (R). Further, the influence of ply orientation and the laminate wall thickness towards the energy absorbing capability of each GFRP conical specimen was studied. The buckling mode of collapse and the crushed zones of GFRP composite conical shells were also investigated to identify the collapse mechanisms involved in thin fibre/resin composite laminated conical specimens under quasi-static axial compression. (C) 2013 Elsevier Ltd. All rights reserved.
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