%0 Journal Article
%T A theoretical and experimental study on the quasi-static constitutive model of aluminum foams<br>泡沫铝材料准静态本构关系的理论和实验研究
%A Wang Erheng Yu Jilin Wang Fei Sun Liang
%A <br>王二恒
%A 虞吉林
%A 王飞
%A 孙亮
%J 力学学报
%D 2004
%I 
%X The phenomenological constitutive framework for compressible elasto-plastic solid presented by Chen and Lu is applied to an open-cell and a closed-cell aluminum foams to establish their quasi-static constitutive models. The macroscopic stress-strain curves for the aluminum foams under 3-D proportional and non-proportional loadings, respectively, are derived from the model. Four kinds of experiments, i.e., uniaxial compression, hydrostatic compression, lateral-constrained compression and 3-D proportional compression, are conducted. Constitutive parameter curves for the model are obtained from the uniaxial compression and hydrostatic compression tests and then applied to predict their responses under the other two loading conditions. It is found that the theoretical prediction agrees well with the experimental results for the case of 3-D proportional compression, but not for that of lateral-constrained compression. A simplified friction correction reveals that the deviation of the theoretical prediction from the experimental results for the lateral-constrained compression case is induced by friction between the specimen and the constraining sleeve. The present results show that the Chen and Lu model can describe the compression-dominant behavior of aluminum foams satisfactorily.
%K constitutive model
%K compressible solids
%K aluminum foam
%K 3-D compressive tests<br>本构模型
%K 可压缩弹塑性
%K 泡沫铝
%K 压缩试验
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=5D344E2AD54D14F8&jid=4100DA4A1A3BA1B0CE5AD99AE1DFB420&aid=3E730E654D8AB2A9&yid=D0E58B75BFD8E51C&vid=933658645952ED9F&iid=B31275AF3241DB2D&sid=B28C697BC3A1BA62&eid=DC06EBDBAF4E06D3&journal_id=0459-1879&journal_name=力学学报&referenced_num=4&reference_num=14