(3) VC++ programming language is used to modify Duncan-Chang E-B model in the software of FLAC 3D. The modeling stages demonstrated include creating and saving a project, using building blocks to. The focus of this tutorial is to provide you with a basic familiarity with the user interface and recommended work flow. A kind of hexahedron grid model suitable for the simulation of triaxial tests conducted on silty clay with high precision was established. This tutorial steps through the actions necessary to quickly create and solve a FLAC3D model. Different models were built by combining some basic grids, such as cubes, pyramids, and so on.
Correspondingly, the initial tangent elastic modulus is modified into a three-stage function, and the Duncan-Chang model of Guiyang red clay is obtained and the parameters such as shear strength, failure ratio, tangent Poisson’s ratio and tangent volume modulus are calculated. The mechanical constants are identical to those used in the Cam clay model they can be determined from a series of isotropic compression tests and triaxial. In this paper, consolidated-undrained triaxial tests of silty clay under normal temperature were simulated by FLAC3D. The curve is composed of three segments which represent the deformation law of the clay samples in compression-shearing process. (2) Based on Duncan-Chang model, the incremental elastic curve is fitted. (1) According to the results of triaxial consolidated drained tests with different moisture content, the damage forms, stress-strain curve, the relationships between pore water pressure and displacement changing with the time are analyzed in detail.
Sample characteristics and test results in saturated condition. Based on Duncan-Chang model, the constitutive model of red clay and its mechanical parameters are studied by laboratory tests and numerical simulation. Liquefaction Behavior of Stabilized Sand using Clay - A Case. A large area of China Southwest is covered by red clay, which is a kind of Karst regional special clay with high moisture content, high ductility, large void ratio, low density, poor compaction. is a constant that is equal to 1.0 on the dry side of the critical state line but may be different from 1.0 on the wet side of the critical state line (introduces a different ellipse on the wet side of the critical state line i.e., a tighter cap is obtained if as shown in Figure 11.3.