Cyclic mobility behaviour of sand by the three‐dimensional strain space multimechanism model
Cyclic mobility behaviour of sand by the three‐dimensional strain space multimechanism model
复制标题
三维应变空间多机制模型研究砂土的循环流动行为
DOI：
10.1002/nag.1610180604
复制
发表时间：
1994
影响因子：
4
通讯作者：
H. Fang
中科院分区：
文献类型：
--
作者：
T. Akiyoshi;H. Matsumoto;K. Fuchida;H. Fang
基于散体材料细观力学的三维应变空间多机构模型，研究了砂土的循环流动特性。初始各向同性土的本构特性由体积和剪切机制表征。三维剪切机制被分解成许多微观平面应变剪切机制在不同的取向，其中每个又包括一些微观简单剪切机制。使用适当的机制的总和，总的变形行为可以通过评估每个机制的贡献来获得。在此基础上，将Iai等人提出的双折射模型从二维空间推广到三维空间。理论预测结果与实验测量进行了比较。
The cyclic mobility behaviour of sand by the three-dimensional (3-D) strain space multimechanism model based on the micromechanics of granular material is investigated. The constitutive properties are characterized by the volumetric and shear mechanisms for the initial isotropic soil. The 3-D shear mechanism is decomposed into a number of microscopic plane-strain shear mechanisms in various orientations, each of which in turn consists of a number of microscopic simple shear mechanisms. Using an appropriate summation of mechanisms, the total deformation behaviour can be obtained by evaluating contributions from each mechanism. Based on the some assumptions, the dilatancy model proposed by Iai et al.1 is extended from the two-dimensional (2-D) space to the 3-D space. Comparisons of theoretically predicted results are made with experimental measurements.