Yield surfaces of heterogeneous media with debonded inclusions
Yield surfaces of heterogeneous media with debonded inclusions
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DOI：
10.1108/ec-10-2014-0208
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发表时间：
2015-07
影响因子：
1.6
通讯作者：
D. Somer;D. Peric;E. A. S. Neto;W. Dettmer
中科院分区：
文献类型：
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作者：
D. Somer;D. Peric;E. A. S. Neto;W. Dettmer
目的-本文的目的是目前的知识，估计屈服面的非均匀介质使用均匀化，特别是在宏观行为是由相成分之间的弱界面。设计/方法/方式-计算均匀化程序是用来确定屈服面的一个代表性的体积元素（RVE），其中包含一个完全脱粘夹杂物嵌入在理想的塑性基体，从而接口是由库仑型摩擦法建模。结果-RVE的宏观行为示出符合一个RVE与一个孔的膨胀载荷，而压缩载荷，它被证明是接近一个RVE与一个完全结合的夹杂物。独创性/价值-本文件建立在Gurson的工作估计宏观屈服面的异质材料。这项工作是新颖的，在这个意义上，以前没有出版物讨论弱界面屈服面的影响。
Purpose – The purpose of this paper is to present knowledge in estimating yield surfaces of heterogeneous media by use of homogenization, especially where the macroscopic behaviour is driven by weak interfaces between phase constituents. Design/methodology/approach – A computational homogenization procedure is used to determine the yield surface of a Representative Volume Element (RVE) that contains a fully debonded inclusion embedded within ideally plastic matrix, whereby the interface is modelled by a Coulomb type friction law. Findings – The macroscopic behaviour of the RVE is shown to coincide an RVE with a hole for expanding loads, whereas for compressive loads, it was shown to approach an RVE with a fully bonded inclusion. Originality/value – The present paper builds on Gurson’s work in estimating macroscopic yield surfaces of heterogeneous materials. The work is novel in the sense that there had been no previous publications discussing influence of weak interfaces on yield surfaces.