塑性损伤的发展与应用  

Development and Application of Ductile Damage

作　　者：张丁非[1,2] 戴庆伟[1,2] 胡耀波[1,2] 齐福刚[1,2] 李鹏程[1,2] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400045 [2]国家镁合金材料工程技术研究中心,重庆400044

出　　处：《材料工程》2011年第1期92-98,共7页Journal of Materials Engineering

基　　金：国家973重大基础研究项目(2007CB613700);国家"十一五"科技支撑计划重点项目(2007BAG06B04);国家杰出青年科学基金(50725413);重庆市科技攻关项目(CSTC2009AB4008);中央高校基本科研业务费资助项目(CDJXS10132202)

摘　　要：本文介绍了塑性损伤的机制和建立塑性损伤模型的一般方法;系统地分析比较了基于连续介质力学、细观力学、连续损伤力学等多种损伤理论,推导了它们之间的内在联系;综述了三轴度、应变路径、组织等对塑性损伤的影响,重点阐述了损伤-塑性流变的耦合分析;还介绍了电阻测量、统计与定量表征、有限元等塑性损伤的分析方法;并且分析了目前塑性损伤研究中存在的问题,同时指明了发展方向。The mechanism of ductile damage and a general approach for the establishment of ductile damage model were reviewed.A variety of damage theories based on continuum mechanics,micromechanics,continuum damage mechanics were analyzed,as well as the intrinsic relationship among them was investigated.An overview of the effects of three-axis degrees,the strain path,and microstructure on ductile damage was carried on,especially the damage-plastic coupled analysis.The methods for studying ductile damage,such as the resistance measurement,statistics and quantitative characterization,finite element methods were described.The present problems in ductile damage investigation were analyzed,and the development direction was pointed out.

关 键 词：塑性损伤 损伤模型 塑性流变 连续损伤力学 

分 类 号：O346.5[理学—固体力学]