Publication Date:
2017-06-16
Description:
The influences of different microscopic parameters of the macroscopic mechanical properties are not the same. Based on discrete element granular flow theory, particle contact stiffness, friction coefficient, connection strength and other microscopic parameters of the material properties of macroscopic mechanical properties are analyzed combined with laboratory experiments. Using triaxial test to study IV surrounding rock specimen under different mechanical properties. Based on discrete element granular flow theory, using PFC2D to analyze the relationship between different microscopic parameters and macroscopic mechanical properties. It is found that particle contact stiffness has great influence on the peak strength, macroscopic initial tangent modulus and elastic modulus; With the increase of the friction coefficient between the particles, the peak strength increases; connection strength is greater, the greater the material cohesion and Poisson’s ratio is smaller. Research resu...
Print ISSN:
1757-8981
Electronic ISSN:
1757-899X
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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