期刊
INTERNATIONAL JOURNAL OF PLASTICITY
卷 34, 期 -, 页码 93-113出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijplas.2012.01.011
关键词
constitutive behavior; Geological material; Mechanical testing; Thermomechanical processes; Equivalent stress
资金
- National Basic Research Program of China [2011CB710601]
- Central South University [2011QNZT108]
Based on phenomenon that both change of stress and temperature will cause elastic volumetric strains, a concept of 'equivalent stress' is introduced into a newly proposed thermoelastoplastic model. This new concept is used to formulate an equivalent subloading yield surface, an extended void ratio difference and the corresponding evolution equation in natural way, which can consider both influences of the stress and temperature. The proposed model can describe properly the general mechanical and thermal behavior of some typical geomaterials and is confirmed by laboratory tests results. For instance, increase of temperature may increase or decrease the strength of materials depending on the characteristics of the materials. Meanwhile, it is proved that the proposed model satisfies thermodynamic theorems in the framework of thermodynamics. (C) 2012 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据