Relationship of Material Microscopic-Macroscopic parameter revealed by Discrete Element Method

• Main Authors: Shu Hsuan,Chou, 周書玄
• Other Authors: 張國楨
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/sarbch

碩士 === 國立臺北科技大學 === 土木與防災研究所 === 101 === This study analyzed through numerical method to simulate materials in triaxial (including single pressure) mechanical behavior under test conditions, and for the microscopic parameters for changing the material circumstances, the corresponding macroscopic parameters as discussed 　　This study is based on the Distinct Element Method Numerical software PFC3D Simulation microscopic spherical particles between elements of the mechanical behavior of non-continuum, and to establish the elements of microscopic parameters and the overall macroscopic material parameter sensitivity analysis of interconnectedness. In triaxial tests, for example, elements through microscopic particles parameter settings for PFC3D the simulation results obtained under different microscopic parameters set corresponding overall macroscopic parameters, in respect material of micro and macro parameter checking investigate the association , That material macroscopic elastic modulus and uniaxial compressive strength, respectively, with the microscopic particle elements elastic modulus and bond strength between particles is proportional approximately,another material macroscopic parameters - Poisson''s ratio is positively related to particles of the elements of positive / tangential stiffness ratio. Used statistical analysis software-SPSS as analysis using regression methods, represent between the micro, macro parameter relationships by regression equation, in future PFC3D simulated particles and bonding material parameters such as the alignment of various microscopic and macroscopic materials to meet the desired simulated parameters reference direction of research work.