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Rock materials damage evolution behavior of fractal geometry and fractal Mechanism
Author: LuBingYang
Tutor: WuHongCi
School: Guizhou University
Course: Geotechnical Engineering
Keywords: Damage Fractal Fractal dimension Distribution of micro-cracks Damage evolution
CLC: TU452
Type: Master's thesis
Year: 2007
Downloads: 396
Quote: 6
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Abstract
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Rock contains a lot of microscopic, mesoscopic defects (damage), which are the important factors that affect rock mechanics properties. Fractal geometry is a quantitative description of rock damage fracture macroscopic, mesoscopic, microscopic material mechanical behavior becomes a powerful tool. Compared with other methods, fractal theory is quantified in terms of research on material damage, such as rock, intuitive, convenient and easy to master, etc. In this paper, the basic concepts of fractal geometry, the theory and method, a further study of fractal geometry is used to solve practical engineering problem boils down to four: (1) the fractal measurement experiment; (2) the fractal model method; (3) d image method; (4) the fractal structure simulation. Were studied with fractal geometry theory and the characteristics of damage evolution of rock materials and the fractal mechanism, found the damage evolution process of rock materials is a fractal, the fractal has better statistical self-similarity; Fracture strength formula of fractal can fully express more rock fracture distribution regularity and strength; Damage evolution of rock material, which is a critical crack fractal dimension D from the micro crack extension to join to the evolution of the damage process. These research results and the previous study of fitting is good.
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CLC: > Industrial Technology > Building Science > Soil mechanics,foundation engineering > Rock ( rock ) mechanics and rock testing > Rock mechanical properties and stress theory
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