Title :
DEM simulation of densification in concrete block vibration forming
Author :
Pingxi, Yao ; Shichun, Yang ; Lianhui, Zhao ; Huilong, Lu
Author_Institution :
Coll. of Mech. Eng., Taiyuan Univ. of Technol., Taiyuan
Abstract :
The mechanism of granules´ density variation is analyzed in concrete block vibration forming processing. The simulation of the vibrating process is done by the discrete element method analysis software - PFC2D. The change of porosity in the process of vibration of granule groups is studied and the change law is revealed. The effect of four aspects is also discussed, which are friction coefficient of granular, particle size, vibration frequency and amplitude. The porosity is positively related to friction coefficient of granular and negatively correlated to particle size. Quadric curve can be used to model the relationship between vibration amplitude and porosity. The fluctuation of change of porosity can be decreased by choosing higher vibration frequency. These research results possess a certain reference value to the design of vibration parameters and improve the quality of building block.
Keywords :
concrete; forming processes; friction; mechanical engineering computing; numerical analysis; particle size; production engineering computing; vibrations; DEM simulation; concrete block vibration forming; discrete element method analysis software; friction coefficient; particle size; vibration frequency; Analytical models; Building materials; Computational modeling; Concrete; Frequency; Friction; Numerical simulation; Robotics and automation; Solids; Vibration control; DEM; building block; densification; discrete element method; simulation;
Conference_Titel :
Control, Automation, Robotics and Vision, 2008. ICARCV 2008. 10th International Conference on
Conference_Location :
Hanoi
Print_ISBN :
978-1-4244-2286-9
Electronic_ISBN :
978-1-4244-2287-6
DOI :
10.1109/ICARCV.2008.4795866
