Axial crushing behaviors of composite pre-folded tubes made of KFRP/CFRP hybrid laminates. (April 2020)

• Record Type: Journal Article
• Authors: Ye, Haitao; Zhou, Xiang; Ma, Jiayao; Wang, Hai; You, Zhong
• Is Part Of: Thin-walled structures. Volume 149(2020)
• Publication Date: 2020-04
• Subjects: Pre-folded tubes -- Full-diamond pattern -- Hybrid laminates -- Energy absorption -- Finite element analysis; Thin-walled structures -- Periodicals; 690.1
• DOI: 10.1016/j.tws.2020.106649
• Languages: English
• ISSNs: 0263-8231

Abstract

Abstract: In this paper, the crushing behaviors of composite pre-folded tubes made of KFRP/CFRP hybrid laminates subjected to quasi-static axial loads are investigated both experimentally and numerically. The full-diamond origami pattern and its variation forms with curved lobes are considered for the tube design. Five pre-folded tube specimens with different ply stacking sequences consisting of CFRP and KFRP woven fabrics are manufactured and tested in quasi-static axial compression tests. The finite element models for pre-folded tubes made of KFRP/CFRP hybrid laminates are developed and validated with the experimental results. A comprehensive parametric study on the energy absorption properties of CFRP/KFRP hybrid composite tubes with various geometries is performed numerically. The results show that the energy absorption performance of the composite tubes has a strong correlation with the composition of hybrid fiber and the specimen with the stacking sequence of [ 0 k ° / 0 c ° / 0 c ° / 0 k ° ] has the best overall energy absorption performance among the five specimens tested. Moreover, it is found that by converting the standard full-diamond pattern to the curved variation forms, the energy absorption performance of the pre-folded tubes can be improved. Graphical abstract: Image 1 Highlights: Pre-folded composite tubes with different hybrid layups are manufactured and tested. The FE models of pre-folded hybrid KFRP/CFRP tubes are developed and validated with experimental results. Parametric studies on the energy absorption behaviors of pre-folded hybrid KFRP/CFRP tubes are conducted. The relationship between the energy absorption performance and the collapse modes of pre-folded KFRP/CFRP tubes is discussed.