摘要
本文利用ＭＴＳ公司８１５．０２型电液伺服试验系统对砼进行了等应变速率加载控制的应力一应变全曲线试验，应用不可逆热力学和内变量理论的成果建立了砼损伤力学模型，并用概率统计的观点分析了损伤的演化规律。由于考虑了不可逆变形的影响，本文所建本构模型与实验吻合较好。
in this paper, using MTS815.02 electro-hydraulic servo testing system, the complete process tests of concrete under compression with controlled strain velocity have been done. Based on irreversible thermodynamics and internal variable theory, a new CDM constitutive model of concrete under compression is established, in which the evolution of damage variable follows probability distribution. With the influence of irreversible deformation included,the model is in good agreement with experimental results.
出处
《工程力学》
EI
CSCD
1996年第1期44-53,共10页
Engineering Mechanics
基金
国家杰出青年科学基金
关键词
钢筋混凝土
本构模型
损伤力学
concrete, stress-strain curve, free energy, internal variable, damage, Weibull distribution
