Zn-22Al泡沫夹芯复合板的三点弯曲性能

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

Zn-22Al泡沫夹芯复合板的三点弯曲性能

刘家安^1,2, 于思荣^1,2, 朱先勇³

1. 吉林大学材料科学与工程学院, 长春 130022;
2. 吉林大学汽车材料教育部重点实验室, 长春 130022;
3. 吉林大学机械科学与工程学院, 长春 130022

收稿日期:2011-01-16 出版日期:2012-03-01 发布日期:2012-03-01
通讯作者: 于思荣 (1964-),男,教授,博士生导师.研究方向:复合材料,表面工程.E-mail:yusr@jlu.edu.cn E-mail:yusr@jlu.edu.cn
作者简介:刘家安 (1980-),男,讲师,博士.研究方向:多孔金属材料.E-mail:liuja@jlu.edu.cn
基金资助:
国家自然科学基金面上项目(51075184);教育部中央高校基本科研业务费专项资金项目(200903011);吉林省科技厅项目(20100550).

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

LIU Jia-an^1,2, YU Si-rong^1,2, ZHU Xian-yong³

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

摘要/Abstract

摘要： 以Zn-22Al(ZA22)基泡沫材料为芯材,LY12铝板为面板制备了泡沫夹芯复合板。研究了泡沫夹芯复合板的三点弯曲行为,观察了复合板的破坏模式,分析了复合板弯曲性能的影响因素,运用层合梁刚度优化理论探讨了其机理。研究结果表明,ZA22泡沫夹芯复合板的三点弯曲载荷-位移曲线可按线性段、非线性段和失稳段表示其特征;其弯曲极限载荷随孔隙率的增大而减小,并且泡沫夹芯复合板表现出明显的层合效果。三点弯曲载荷作用下,泡沫夹芯复合板的主要失效模式为芯材的剪切破坏。

关键词: 复合材料, 泡沫夹芯复合板, 三点弯曲试验, 锌铝合金

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

中图分类号:

TB331

刘家安, 于思荣, 朱先勇. Zn-22Al泡沫夹芯复合板的三点弯曲性能[J]. 吉林大学学报(工学版), 2012, 42(02): 344-348.

LIU Jia-an, YU Si-rong, ZHU Xian-yong. Three-point bending properties of Zn-22Al foam sandwich panel[J]. 吉林大学学报(工学版), 2012, 42(02): 344-348.

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