考虑各向异性损伤的统一弹塑性损伤模型  

Unified elastic-plastic damage model considering anisotropic damage

作　　者：范文[1] 闫芙蓉[1,2] 俞茂宏[3] 

机构地区：[1]长安大学地测学院,陕西西安710054 [2]河南理工大学土木学院,河南焦作454000 [3]西安交通大学土木工程系,陕西西安710049

出　　处：《西安建筑科技大学学报（自然科学版）》2009年第3期304-311,318,共9页Journal of Xi'an University of Architecture & Technology(Natural Science Edition)

基　　金：中国博士后基金资助项目(2004036055)

摘　　要：采用基于连续介质热力学与连续介质力学的宏观唯象理论的研究方法,引入俞茂宏相当应力,建立了各向异性损伤的统一弹塑性损伤模型和损伤演变相当应力模型,该模型考虑了材料的拉压异性与中间主应力效应,并将静水应力效应与偏应力效应分开考虑,符合从岩土到金属等各种材料实际,具有很广泛的实用性.Based on the phenomenological theory of continuous media thermodynamics and mechanics, Yu Maohong equivalent stress is then introduced to establish a unified elastic-plastic damage model and damage mechanics equivalent stress model, where the materials tension and compression heterosexual and effects of intermediate principal stress are taken into account, and hydrostatic stress and partial stress are considered separately. Such a model has a wide range of application in the rock, the metal and other materials.

关 键 词：损伤力学 统一弹塑性损伤模型 各向异性损伤 俞茂宏相当应力 

分 类 号：O345.6[理学—固体力学]