| 岩土二元介质模型的一般应力应变关系 | |
| 沈珠江 ; 刘恩龙 ; 陈铁林 ; SHEN Zhu-jiang ; LIU En-long ; CHEN Tie-lin | |
| 2010-06-10 ; 2010-06-10 | |
| 关键词 | 二元介质 均匀化理论 破损参数 应力集中系数 binary medium homogenization theory breakage parameters stress concentration coefficient TU452 |
| 其他题名 | Generalized stress-strain relationship of binary medium model for geological materials |
| 中文摘要 | 本文把岩土材料看作由胶结块和软弱包组成的二元介质,并假定胶结块为弹脆性元,软弱包为硬化型弹塑性元,在非均质材料均匀化理论的基础上,推导了增量型的一般应力应变关系。模型中包含弹脆性元的破损参数和应力集中系数两组结构参数,其演化规律可以通过先假设后验证的办法确定。文末通过结构性粘土和砂岩岩样两个算例,说明以上模型具有广泛适应性。; In this paper geomaterials are conceptualized as binary medium consisting of bonded blocks and weakened cells which are idealized as elastic-brittle element and hardening elastic-plastic element respectively. Based on the homogenization theory of heterogeneous materials, a generalized stress-strain relationship expressed in incremental form is derived. The model contains two sets of structural parameters whose evolution laws can be determined by means of “try and error” method, i.e, breakage parameter and stress concentration coefficient of elastic-brittle element. Finally a structural clay and a sandstone specimen are taken as two examples to prove the applicability of the suggested model.; 国家自然科学基金资助项目(10272062) |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/59744]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 沈珠江,刘恩龙,陈铁林,等. 岩土二元介质模型的一般应力应变关系[J],2010, 2010. |
| APA | 沈珠江,刘恩龙,陈铁林,SHEN Zhu-jiang,LIU En-long,&CHEN Tie-lin.(2010).岩土二元介质模型的一般应力应变关系.. |
| MLA | 沈珠江,et al."岩土二元介质模型的一般应力应变关系".(2010). |
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