Mechanical properties of Nomex honeycomb sandwich panels under dynamic impact

被引：87
|
作者：
Xie, Suchao [1 ,2 ,3 ]
Jing, Kunkun [1 ,2 ,3 ]
Zhou, Hui [1 ,2 ,3 ]
Liu, Xiang [1 ,2 ,3 ,4 ]
机构：
[1] Cent S Univ, Minist Educ, Key Lab Traff Safety Track, Changsha 410075, Peoples R China
[2] Joint Int Res Lab Key Technol Rail Traff Safety, Changsha 410075, Peoples R China
[3] Natl & Local Joint Engn Res Ctr Safety Technol Ra, Changsha 410075, Peoples R China
[4] China Acad Railway Sci Corp Ltd, Beijing 100081, Peoples R China
来源：
COMPOSITE STRUCTURES | 2020年 / 235卷
基金：
中国国家自然科学基金;
关键词：
Honeycomb sandwich panels; Dynamic impact; Impact response; Mechanical properties; LOW-VELOCITY IMPACT; CORE; DAMAGE; PREDICTION; BEHAVIOR; CRASHWORTHINESS; FAILURE; DESIGN;
D O I：
10.1016/j.compstruct.2019.111814
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
Through experiments and numerical simulation, the dynamic mechanical behaviors and mechanical properties of Nomex honeycomb sandwich panels under impact loads were investigated. On this basis, the effects of the density of honeycomb cores, face-sheet thickness, punch diameter, and impact energy on impact loads and failure modes were explored. The predicted contact time, impact load, and failure mode were consistent with the test results. Results showed that face-sheet thickness exhibited an extremely significant influence on the impact resistance of Nomex honeycomb sandwich panels; the density of honeycomb cores exerted a certain effect on the structural stiffness; the punch diameter and impact energy also influenced the mechanical properties and failure modes of sandwich panels.
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收藏
页数：12
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