Enhanced vibration and damping characteristics of novel corrugated sandwich panels with polyurea-metal laminate face sheets - Details

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Abstract：

All-metallic　sandwich　panels　with　lattice　truss　cores　are　typically　ultralight,　stiff　and　strong,　yet　poor　in　passive　vibration　damping.　Novel　laser-welded　corrugated-core　(LASCOR)　sandwich　panels　with　polyurea-metal　laminates　(PML)　as　face　sheets　were　proposed　and　fabricated,　and　their　vibration　and　damping　characteristics　were　systematically　investigated,　both　experimentally　and　numerically.　Frequency/time　response　curves,　natural　frequencies,　vibration　mode　shapes　and　damping　loss　factors　were　measured　and　compared　with　LASCOR　sandwich　panels　without　embedded　polyurea　layers.　A　combined　finite　element-modal　strain　energy　(FE-MSE)　method　was　proposed　to　predict　the　vibration　damping　performance　and　explore　the　underlying　enhancement　mechanisms,　with　the　frequency-dependent　damping　behaviors　of　polyurea　considered.　Good　agreement　was　achieved　between　numerical　simulations　and　experimental　measurements.　The　PML　face　sheets　enabled　remarkable　damping　enhancement,　due　mainly　to　viscoelastic　energy　dissipation　of　the　polyurea　layers.　The　capacity　of　the　sandwich　panel　in　passive　vibration　suppression　could　be　further　improved　by　tailoring　the　polyurea　layer　thickness　and　the　distribution　of　polyurea　layers.　©　2020

Keyword：

Damping Energy dissipation Honeycomb structures Sandwich structures Strain energy Structural panels

Author Community：

[ 1 ] [Wang, Xin]State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an; 710049, China
[ 2 ] [Wang, Xin]Nanjing Center for Multifunctional Lightweight Materials and Structures (MLMS), Nanjing University of Aeronautics and Astronautics, Nanjing; 210016, China
[ 3 ] [Li, Xue]State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing; 210016, China
[ 4 ] [Li, Xue]Nanjing Center for Multifunctional Lightweight Materials and Structures (MLMS), Nanjing University of Aeronautics and Astronautics, Nanjing; 210016, China
[ 5 ] [Yu, Run-Pei]State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an; 710049, China
[ 6 ] [Yu, Run-Pei]Nanjing Center for Multifunctional Lightweight Materials and Structures (MLMS), Nanjing University of Aeronautics and Astronautics, Nanjing; 210016, China
[ 7 ] [Ren, Jian-Wei]State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing; 210016, China
[ 8 ] [Ren, Jian-Wei]Nanjing Center for Multifunctional Lightweight Materials and Structures (MLMS), Nanjing University of Aeronautics and Astronautics, Nanjing; 210016, China
[ 9 ] [Zhang, Qian-Cheng]State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an; 710049, China
[ 10 ] [Zhang, Qian-Cheng]Key Laboratory of Intense Dynamic Loading and Effect, Northwest Institute of Nuclear Technology, Xi'an; 710024, China
[ 11 ] [Zhao, Zhen-Yu]State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing; 210016, China
[ 12 ] [Zhao, Zhen-Yu]Nanjing Center for Multifunctional Lightweight Materials and Structures (MLMS), Nanjing University of Aeronautics and Astronautics, Nanjing; 210016, China
[ 13 ] [Ni, Chang-Ye]State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing; 210016, China
[ 14 ] [Ni, Chang-Ye]Nanjing Center for Multifunctional Lightweight Materials and Structures (MLMS), Nanjing University of Aeronautics and Astronautics, Nanjing; 210016, China
[ 15 ] [Han, Bin]School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an; 710049, China
[ 16 ] [Lu, Tian Jian]State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing; 210016, China
[ 17 ] [Lu, Tian Jian]Nanjing Center for Multifunctional Lightweight Materials and Structures (MLMS), Nanjing University of Aeronautics and Astronautics, Nanjing; 210016, China

Reprint Author's Address：

[Zhang, Qian-Cheng]State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an; 710049, China;;[Zhang, Qian-Cheng]Key Laboratory of Intense Dynamic Loading and Effect, Northwest Institute of Nuclear Technology, Xi'an; 710024, China;;

Email：

zqc111999@xjtu.edu.cn

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Related Keywords：

Vibro-acoustic characteristics of viscoelastic sandwich panel: effect of inherent damping
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Optimal design of metallic corrugated sandwich panels with polyurea-metal laminate face sheets for simultaneous vibration attenuation and structural stiffness
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Effects of Coulomb Friction on Bump Foil Gas Bearing
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Source ：

Composite Structures

ISSN： 0263-8223

Year： 2020

Volume： 251

5 . 4 0 7

JCR@2020

5 . 4 0 7

JCR@2020

ESI Discipline： MATERIALS SCIENCE;

ESI HC Threshold：84

CAS Journal Grade：3

Cited Count：

WoS CC Cited Count： 13

SCOPUS Cited Count： 38

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 7

Affiliated Colleges：

机械工程学院本学院/部未明确归属的数据

国家重点实验室机械结构强度与振动国家重点实验室

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