摘要
将塑性应变和非局部损伤取为内变量，引入耗散势，利用连续介质损伤力学和热力学第二定律，建立了一个能全面描述材料本构行为的非局部非弹性损伤本构方程，用该模型计算了单位、单压状态下混凝土材料及20#钢的应力-应变关系曲线，取得了较好的结果．
Taking plastic strain and non-local damage as internal variables,drawing in the dissipa-tion potential and applying the continuum damage mechanics and the second law of thermo-dynamics,a constitutional equation of non-local and non-elastic damage is established whichmakes it possible to describe allsidedly the constitutional behavior of material. The stress-strain curves of concrete material and steel # 20 under axial tension and axial compressionhave been calculated by use of this tnodel. Satisfactory results have been obtained.
出处
《内蒙古工业大学学报（自然科学版）》
1997年第3期89-94,共6页
Journal of Inner Mongolia University of Technology：Natural Science Edition
基金
冶金部有偿资助
关键词
非局部损伤
耗散势
本构方程
塑性应变
损伤
internal variable
non-local damage
dissipation potential
constitutional equation
