Simulation Study of Structural and Dynamic Properties of Bi-Disperse Colloidal Suspensions

2020 ◽  
Vol 998 ◽  
pp. 283-289
Author(s):  
Danial Irfachsyad ◽  
Hira Meidia
Keyword(s):  
Dynamic Simulation ◽  
Simulation Study ◽  
Dynamic Properties ◽  
Colloidal Suspension ◽  
Colloidal Suspensions ◽  
Size Ratio ◽  
Brownian Dynamic ◽  
Small Particles ◽  
Soft Sphere ◽  
Disperse Particles

We used Brownian Dynamic simulation to study structural and dynamic properties of bi-disperse colloidal suspensions. The size ratio of large to small particles in the bi-disperse colloidal suspension is set at 5:1 and 10:1. We studied the interaction of aggregates (clusters) formed through DLVO (Derjaguin, Landau, Verwey and Overbeek) and soft sphere interactions in a bi-disperse suspension. The dynamic properties of bi-disperse is correlated by varying the size ratio of bi-disperse particles, it is found that the mobility is decreased at size ratio of large to small particles is 5:1. This is despite the percolating particle gels formation was disrupted by larger particles at higher size ratio.

Dynamic properties of dense sand-rubber mixtures with small particles size ratio

2016 ◽  
Vol 21 (9) ◽  
pp. 1065-1079 ◽  
Author(s):  
Ali Brara ◽  
Ahmed Brara ◽  
Ali Daouadji ◽  
Abderahim Bali ◽  
El Mostafa Daya
Keyword(s):  
Dynamic Properties ◽  
Size Ratio ◽  
Small Particles ◽  
Dense Sand

scholarly journals Novel analysis methods of dynamic properties for vehicle pantographs

2018 ◽  
Vol 180 ◽  
pp. 01005 ◽  
Author(s):  
Andrzej Wilk
Keyword(s):  
Dynamic Analysis ◽  
Dynamic Simulation ◽  
High Speed ◽  
Dynamic Properties ◽  
Equations Of Motion ◽  
Computer Software ◽  
Fem Analysis ◽  
Electrical Energy ◽  
Modern Approach ◽  
Static And Dynamic Analysis

Transmission of electrical energy from a catenary system to traction units must be safe and reliable especially for high speed trains. Modern pantographs have to meet these requirements. Pantographs are subjected to several forces acting on their structural elements. These forces come from pantograph drive, inertia forces, aerodynamic effects, vibration of traction units etc. Modern approach to static and dynamic analysis should take into account: mass distribution of particular parts, physical properties of used materials, kinematic joints character at mechanical nodes, nonlinear parameters of kinematic joints, defining different parametric waveforms of forces and torques, and numerical dynamic simulation coupled with FEM calculations. In this work methods for the formulation of the governing equations of motion are presented. Some of these methods are more suitable for automated computer implementation. The novel computer methods recommended for static and dynamic analysis of pantographs are presented. Possibilities of dynamic analysis using CAD and CAE computer software are described. Original results are also presented. Conclusions related to dynamic properties of pantographs are included. Chapter 2 presents the methods used for formulation of the equation of pantograph motion. Chapter 3 is devoted to modelling of forces in multibody systems. In chapter 4 the selected computer tools for dynamic analysis are described. Chapter 5 shows the possibility of FEM analysis coupled with dynamic simulation. In chapter 6 the summary of this work is presented.

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