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Parametric study of crushing parameters and failure patterns of pultruded composite tubes using cohesive elements and seam: Part II – Multiple delaminations and initial geometric imperfections by Sivakumar Palanivelu; Wim Van Paepegem; Joris Degrieck; Johan Van Ackeren; Dimitrios Kakogiannis; Jan Wastiels; Danny Van Hemelrijck; John Vantomme is a Materials Science article available to read on EtoBox.

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Part I presented the circumferential central delamination and triggering modelling of composite tubes and their influence on predicting the peak crush load and the corresponding energy absorption. The knowledge of failure patterns is very important for the design architecture of an energy absorbing element and its placement in the structure. In this study, the failure patterns of pultruded circular and square cross sectional glass polyester composite tubes were evaluated with pre-defined seams for an axial impact loading case. Furthermore, this paper demonstrates the importance of considering multiple delaminations to predict the appropriate energy absorption of composite tubes using cohesive elements. The influence of correct numerical modelling of triggering (especially 45 edge chamfering) on the peak crush load of the composite tubes is proved with multiple layers of shell elements. The effect of initial geometric imperfections on the energy absorption, peak crushing load and the deformation pattern of pultruded glass polyester composite tubes is also studied. In order to address the importance of above factors, a comprehensive numerical investigation was carried out with multip

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Author

Sivakumar Palanivelu; Wim Van Paepegem; Joris Degrieck; Johan Van Ackeren; Dimitrios Kakogiannis; Jan Wastiels; Danny Van Hemelrijck; John Vantomme

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0142-9418)

Published

2010

Language

EN

Field

Materials Science (Physical Sciences)