吉林大学学报(工学版) ›› 2012, Vol. 42 ›› Issue (02): 344-348.

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Three-point bending properties of Zn-22Al foam sandwich panel

LIU Jia-an1,2, YU Si-rong1,2, ZHU Xian-yong3   

  1. 1. College of Materials Science and Engineering, Jilin University, Changchun 130022, China;
    2. Key Laboratory of Automobile Materials, Ministry of Education, Jilin University, Changchun 130022, China;
    3. College of Mechanical Science and Engineering, Jilin University, Changchun 130022, China
  • Received:2011-01-16 Online:2012-03-01 Published:2012-03-01

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Abstract: The sandwich panel were fabricated using Zn-22Al matrix foam as the core material and the LY12 aluminum panel as the shell. The bending behavior of the sandwich panel was studied by three-point bending test. The failure mode of the sandwich panel was observed and the influencing factors were analyzed. Applying the stiffness optimization theory of sandwich panels, the deformation mechanism of the sandwich panels was discussed. The results showed that the bending curves of the sandwich panel can be divided into three regions, including the linear deformation region, the non-linear deformation region and the unsteady region. The ultimate load of the sandwich panel decreases when the porosity of the foam is rising. The sandwich panel shows a favorable cooperative effect on mechanical property. The primary failure mode of the sandwich panel is the core shearing.

Key words: composite material, foam sandwich panel, three-point bending test, Zinc-aluminum alloy

CLC Number: 

  • TB331
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