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Static and dynamic crushing of novel porous crochet-sintered metal and its filled composite tube

Wu, Fei; Liu, Tao; Xiao, Xiaoting; Zhang, Zhengrong; Hou, Junliang


Fei Wu

Tao Liu

Xiaoting Xiao

Zhengrong Zhang

Junliang Hou


© 2018 Elsevier Ltd A novel porous crochet-sintered metal (PCSM) is fabricated by rolling a crocheted porous cloth and subsequent vacuum sintering using a continual single super-fine soft 304 rope twisted by 49 fibers as raw material. This work investigates the quasi-static and dynamic axial crushing response of PCSMs and their filled composite tubes. The pore structures of PCSMs are formed by inter-crocheted and multiple inter-locked rope skeletons and metallurgical bonds. The PCSMs have almost no initial impact effects with a high crushing force efficiency. Filling the PCSMs changes the deformation model of 6063 tube, improves the static crashworthiness parameters of 6063 tube by 8–25% with almost no increasing initial impact effect, and doesn't always play a positive role in dynamic absorption. Porosity has obvious influence on the quasi-static and dynamic behavior and crashworthiness of PCSMs and their filled composite tube, and the effect of porosity on dynamic crashworthiness of composite tube is greater than that on quasi-static crashworthiness of composite tube. The PCSMs and their composite tubes show great potential for application in energy absorbers. The method of filling PCSM into bare tube is possible to improve the energy absorption ability of thin-walled tube with almost no increase in the initial peak force.


Wu, F., Liu, T., Xiao, X., Zhang, Z., & Hou, J. (2019). Static and dynamic crushing of novel porous crochet-sintered metal and its filled composite tube. Composite Structures, 209, 830-843.

Journal Article Type Article
Acceptance Date Nov 6, 2018
Online Publication Date Nov 8, 2018
Publication Date Feb 1, 2019
Deposit Date Jan 28, 2019
Publicly Available Date Nov 9, 2019
Journal Composite Structures
Print ISSN 0263-8223
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 209
Pages 830-843
Keywords Civil and Structural Engineering; Ceramics and Composites
Public URL
Publisher URL
Additional Information 12 mo. embargo. OL 29.01.2019


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