基于Gurson损伤力学模型的糜棱岩成因有限元分析  

FINITE ELEMENT ANALYSIS OF MYLONITE FORMATION FOUNDED ON DAMAGE MECHANICS MODEL OF GURSON

作　　者：胡宗军[1] 李和平[1] 白嘉楠[1] 

机构地区：[1]合肥工业大学土木建筑工程学院工程力学系,合肥230009

出　　处：《固体力学学报》2006年第S1期143-147,共5页Chinese Journal of Solid Mechanics

摘　　要：应用孔洞损伤的Gurson模型,建立糜棱岩原岩细观孔洞损伤体胞单元,提出糜棱岩成因的损伤力学观点,统一解释糜棱岩成因研究中一些独特的地质现象.对一种具体原岩———花岗岩的细观孔洞损伤体胞单元作了有限元计算分析,并根据计算结果讨论了各种应力对糜棱化过程的影响.The meso-damage mechanical RVE(representative volume element) of mylonite parent rock is established in this paper founded on the damage mechanics model of Gurson.A view about mylonite formation is also given.Ligaments bear high pressure in the direction of axis and low pressure in the direction of the porous medium.Some strange geology phenomena on mylonite formation are explained according to this view.Finite element method analysis of the mylonite course of a specific mylonite parent rock,granite,is give...

关 键 词：Gurson模型 糜棱岩 损伤力学 细观孔洞损伤体胞 有限元分析 

分 类 号：TU452[建筑科学—岩土工程]