IMECH-IR  > 流固耦合系统力学重点实验室
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.
Source PublicationCOMPOSITES PART B-ENGINEERING
2017-05-01
Volume116Pages:278-290
ISSN1359-8368
AbstractRandom 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.
KeywordSandwich Panel With Truss Core Random Damages Natural Frequency Mode Shape Boundary Condition
DOI10.1016/j.compositesb.2016.10.051
Indexed BySCI ; EI
Language英语
WOS IDWOS:000401676400024
WOS KeywordFREQUENCY-RESPONSE FUNCTIONS ; FREE-VIBRATION ; STRUCTURAL PERFORMANCE ; THEORETICAL-ANALYSIS ; IDENTIFICATION ; BEAMS ; FOAM
WOS Research AreaEngineering ; Materials Science
WOS SubjectEngineering, Multidisciplinary ; Materials Science, Composites
Funding OrganizationNational Natural Science Foundation of China(11472276 ; Defense Industrial Technology Development Program of China(JCKY2016130B009) ; 11332011 ; 11502268)
DepartmentLMFS热结构耦合力学 ; LMFS冲击与耦合效应(LHO)
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Ranking1
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/60545
Collection流固耦合系统力学重点实验室
Corresponding AuthorSong, 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.
Recommended Citation
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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