Mechanical properties of rigid and flexible polyurethane foam in-situ foamed Nomex honeycomb

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成果类型：

期刊论文

作者：

Wang, Hao;Xie, Suchao;Feng, Zhejun;Jing, Kunkun;Zhang, Jing;...

通讯作者：

Xie, SC

作者机构：

[Zhang, Jing; Xie, SC; Xie, Suchao; Feng, Zhejun; Jing, Kunkun; Wang, Hao] Cent South Univ, Sch Traff & Transportat Engn, Key Lab Traff Safety Track, Minist Educ, Changsha 410075, Peoples R China.

[Zhang, Jing; Xie, Suchao; Feng, Zhejun; Jing, Kunkun; Wang, Hao] Joint Int Res Lab Key Technol Rail Traff Safety, Changsha 410075, Peoples R China.

[Zhang, Jing; Xie, Suchao; Feng, Zhejun; Jing, Kunkun; Wang, Hao] Natl & Local Joint Engn Res Ctr Safety Technol Rai, Changsha 410075, Peoples R China.

[Zhou, Hui] Cent South Univ Forestry & Technol, Sch Logist & Transportat, Changsha 410075, Peoples R China.

通讯机构：

[Xie, SC ] C

Cent South Univ, Sch Traff & Transportat Engn, Key Lab Traff Safety Track, Minist Educ, Changsha 410075, Peoples R China.

语种：

英文

关键词：

Energy absorption;Engineering application;Mechanical properties;Nomex honeycomb;Polyurethane foam

期刊：

Composite Structures

ISSN：

0263-8223

年：

2023

卷：

322

页码：

117365

DOI：

10.1016/j.compstruct.2023.117365

基金类别：

This research was undertaken at Key Laboratory of Traffic Safety on Track (Central South University), Ministry of Education, China. The authors gratefully acknowledge the support from the National Natural Science Foundation of China(Grant no. 52202455). This paper also supported by the Nature Science Foundation for Excellent Youth Scholars of Hunan Province(Grant No. 2019JJ30034) and the Shenghua Yu-ying Talents Program of the Central South University (Principle Investigator: Pro. Suchao Xie).

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院系归属：

交通运输与物流学院

摘要：

To enhance the mechanical properties of Nomex honeycomb, the honeycomb was foamed in-situ using rigid polyurethane (PU) foam and flexible polyurethane foam (NHRPU, NHFPU, collectively NHPU). Mechanical properties were studied based on tests, theoretical and finite element (FE) methods, respectively. The results showed that NHRPU and NHFPU improve the energy absorption by 85.25% and 47.27% compared to the sum of PU and honeycomb alone. The specific energy absorption (SEA) of NHRPU is improved by 21.76%, while the SEA of NHFPU decreases, NHRPU significantly improves in terms of the honeycomb ene...

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