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Siwaporn Klomkleang. Dynamic investigation of rearrangement mechanisms of compressive two-dimensional colloidal aggregates using discrete element method (DEM). Master's Degree(Chemical and Process Engineering (International Program)). King Mongkut's University of Technology North Bangkok. Central Library. : King Mongkut's University of Technology North Bangkok, 2013.
Dynamic investigation of rearrangement mechanisms of compressive two-dimensional colloidal aggregates using discrete element method (DEM)
Name: Siwaporn Klomkleang
LCSH:
Discrete element method
Abstract:
Two-dimensional (2D) colloidal aggregates of polystyrene microspheres 40 um can be treated as the discontinuum materials, the dynamics and compressive behaviors and rearrangement mechanisms can be monitored and investigated during the experiments (Promkotra and Kangsadan, 2005; Promkotra and Kangsadan, 2013) as well as with the used of the Discrete Element Method (DEM) computer simulation (Kaewkhao and Kangsadan, 2007; Kangsadan and Promkotra, 2006; Kangsadan, 2006). In this work, the interaction force between particles in the colloidal system was considered as a combination of spring and dashpot force and van der Waals force. When compressive forces were applied to the cluster, forces were transmitted through the aggregated colloid during compression subsequently caused the deformation or rearrangement of aggregated colloid. This phenomenon could be observed by evaluating the contact/force link number, not the coordinator number as in previous experimental study (Kaewkhao and Kangsadan, 2007). Two distinct rearrangement mechanisms of aggregated colloid can be seen during two plastic deformation stages: rolling hinge mechanism and sliding whereas tensile failure and shear failure cannot be observed. The main focus of this study was to investigate the rearrangement mechanisms of compressive colloidal aggregates and compare the computer simulation results with the experimental work by Promkotra and Kangsadan (2013).
King Mongkut's University of Technology North Bangkok. Central Library
Address:
BANGKOK
Email:
library@kmutnb.ac.th
Created:
2013
Modified:
2021-02-22
Issued:
2021-02-19
วิทยานิพนธ์/Thesis
application/pdf
eng
DegreeName: Master of science
Level: Master's Degree
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ใช้เวลา
0.016449 วินาที
Siwaporn Klomkleang
| Title | Contributor | Type |
|---|---|---|
| Dynamic investigation of rearrangement mechanisms of compressive two-dimensional colloidal aggregates using discrete element method (DEM)
มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าพระนครเหนือ Siwaporn Klomkleang | วิทยานิพนธ์/Thesis |