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Effects of random damages on dynamic behavior of metallic sandwich panel with truss core
Lu LL(路玲玲); Song HW(宋宏伟); Huang CG(黄晨光); Song, HW (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China.; Song, HW (reprint author), Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China.
2017-05-01
发表期刊COMPOSITES PART B-ENGINEERING
卷号116页码:278-290
ISSN1359-8368
摘要Random damages in the core or face/core interface often appears during fabrication or application of metallic sandwich panels with truss core and may significantly affect the dynamic behavior of the sandwich panel. Two types of evaluation parameters i.e. global parameters and local parameters are used to evaluate the effect of random damages. A finite element model in conjunction with stochastic number program that can automatically specify random damages of various extents is developed. Experiments were conducted to verify the proposed analytic model and technique. Three factors affecting dynamic properties of the damaged sandwich are considered including damage extent boundary condition and damage zone. Results show that variations of structural dynamic property are in proportional to the damage extent and the concentration degree of random damages and increases as the constraint of boundary condition is enhanced. Effects of random damages on both natural frequencies and mode shapes are usually in accordance. Damages in the zone covering structural local vibration modes or maximal vibration amplitude would have greater influences on natural frequencies and mode shapes than damages in other zones. (C) 2016 Elsevier Ltd. All rights reserved.
关键词Sandwich Panel With Truss Core Random Damages Natural Frequency Mode Shape Boundary Condition
DOI10.1016/j.compositesb.2016.10.051
收录类别SCI ; EI
语种英语
WOS记录号WOS:000401676400024
关键词[WOS]FREQUENCY-RESPONSE FUNCTIONS ; FREE-VIBRATION ; STRUCTURAL PERFORMANCE ; THEORETICAL-ANALYSIS ; IDENTIFICATION ; BEAMS ; FOAM
WOS研究方向Engineering ; Materials Science
WOS类目Engineering, Multidisciplinary ; Materials Science, Composites
项目资助者National Natural Science Foundation of China(11472276 ; Defense Industrial Technology Development Program of China(JCKY2016130B009) ; 11332011 ; 11502268)
课题组名称LMFS热结构耦合力学 ; LMFS冲击与耦合效应(LHO)
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力学所作者排名1
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被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/60545
专题流固耦合系统力学重点实验室
通讯作者Song, HW (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China.; Song, HW (reprint author), Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China.
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GB/T 7714
Lu LL,Song HW,Huang CG,et al. Effects of random damages on dynamic behavior of metallic sandwich panel with truss core[J]. COMPOSITES PART B-ENGINEERING,2017,116:278-290.
APA 路玲玲,宋宏伟,黄晨光,Song, HW ,&Song, HW .(2017).Effects of random damages on dynamic behavior of metallic sandwich panel with truss core.COMPOSITES PART B-ENGINEERING,116,278-290.
MLA 路玲玲,et al."Effects of random damages on dynamic behavior of metallic sandwich panel with truss core".COMPOSITES PART B-ENGINEERING 116(2017):278-290.
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