摘要
本文根据内变量定义,引入了表征塑性发展和产生损伤的内变量,根据塑性力学和损伤力学方法,结合混凝土单调受压应力-应变全曲线的试验结果,对混凝土不可逆变形和刚度衰减进行了研究,经与反复加卸载试验结果相比,吻合较好。如果将其推广至反复加卸载试验极为困难的复杂受力工况将是方便有效的。
In this paper, the irreversible deformation and the modulus attenuation of concrete are studied by using the perfectly elastic constitutive model and the experimental data of concrete under monotonic compression, the evolution equation of irreversible deformation and the modulus attenuation being been obtained. In the analysis, results are in good agreement with the cylic compression experiments.
出处
《上海力学》
CSCD
1996年第3期211-215,共5页
Chinese Quarterly Mechanics
基金
国家杰出青年科学基金
国家教委跨世纪优秀人才专项基金
关键词
内变量
不可逆变形
刚度衰减
混凝土
Internal variable, Irreversible deformation, Modulus attenuation.
