典型文献
Dynamic Impact of High-Density Aluminum Foam
文献摘要：
High-density aluminum foam can provide higher stiffness and absorb more energy during the impact Obtaining the constitutive law of such foam requires tri-axial tests with very high pressure,where difficulty may arise because the hydrostatic pressure can reach more than 30 MPa.In this paper,instead of using tri-axial tests,we proposed three easier tests—tension,compression and shear to obtain the parameters of constitutive model(the Deshpande-Fleck model).To verify the constitutive model both statically and dynamically,we carried out addi-tional triaxial tests and direct impact tests,respectively.Based on the derived model,we performed finite element simulation to study the impact response of the present foam.By dimen-sional analysis,we proposed an empirical equation for a non-dimensional impact time td,the impact time divided by the time required for plastic wave travelling from the impact surface to the bottom surface,to determine the deformation characteristic of the aluminum foam after impact.For the case with(t)d≤1,the deformation tends to exhibit a shock-type characteristic,while for the case with(t)d＞5,the deformation tends to exhibit an upsetting-type characteristic.
文献关键词：
中图分类号：
作者姓名：
Q.Peng;J.Xie;H.S.Ma;X.Ling;X.Liu;Y.G.Wei
作者机构：
LNM,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China;School of Engineering Science,University of Chinese Academy of Sciences,Beijing 100049,China;School of Engineering and Technology,China University of Geosciences,Beijing 100083,China;College of Engineering,Peking University,Beijing 100871,China
文献出处：
引用格式：
[1]Q.Peng;J.Xie;H.S.Ma;X.Ling;X.Liu;Y.G.Wei-.Dynamic Impact of High-Density Aluminum Foam)[J].固体力学学报（英文版）,2022(02):198-214
A类：
Deshpande,Fleck
B类：
Dynamic,Impact,High,Density,Aluminum,Foam,density,aluminum,foam,can,provide,higher,stiffness,absorb,more,energy,during,impact,Obtaining,constitutive,law,such,requires,tests,very,pressure,where,difficulty,may,arise,because,hydrostatic,reach,than,In,this,paper,instead,using,we,proposed,three,easier,tension,compression,shear,obtain,parameters,model,To,verify,both,statically,dynamically,carried,out,addi,tional,triaxial,direct,respectively,Based,derived,performed,finite,element,simulation,study,response,present,By,analysis,empirical,equation,dimensional,td,divided,by,required,plastic,wave,travelling,from,surface,bottom,determine,deformation,characteristic,after,For,case,tends,exhibit,shock,type,while,upsetting
AB值：
0.579722
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