摘要
在某些工作环境下,多孔介质中流体同固体骨架之间可能发生复杂的物理化学相互作用,吸附就是各种相互作用的表观现象之一。各种相互作用都伴随能量的转化或转移。吸附引起的固体骨架的膨胀是由于固体和流体之间复杂的能量转化或转移引起的,在此认识基础上,从热力学第一定律和建立本构方程的一般方法出发,将湿度(吸附量)当作系统的状态变量,对缪协兴提出的湿度应力场理论作了严格证明,并详细分析了该理论模型的适用条件及其力学意义。认为湿度应力场本构模型同经典弹性本构模型一样,确定了一种理想物质模型,它也只是实际材料本构关系的一种理想化。
On some occasions, multiple physical or chemical interactions between the fluids and solid skeleton in porous media may take place. Adsorption of fluids is a kind of phenomenon of these interactions. During these interactions, conversion or transfer among kinds of forms of energy take place concomitantly. In this paper, swelling of media caused by fluids in the pore is supposed to be the result of energy inversions from fluids to the media skeleton. Based on this cognition, Miao＇s humidity stress field theory is proved theoretically using the first law of thermodynamics and the general method of constitutive theory. Then the applicable conditions and physical meaning of the humidity stress field theory are analyzed. It can be concluded that humidity stress field theory builds a mathematical material which is the idealization of real matter in the manner of the classic elastic theory does.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2007年第1期89-92,共4页
Rock and Soil Mechanics
基金
中国科学院"百人计划资助项目"。
关键词
湿度应力场理论
流固耦合
流固相互作用
humidity stress field theory
solid-fluid coupling
solid-fluid interactions
