Browsing by Subject Dynamics

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  • 923.pdf.jpg
  • Book


  • Authors: Chaudhary, Himanshu; Saha, Subir Kumar (2008)

  • This monograph develops a unified methodology for dynamic analysis and minimization of the inertia-induced forces occurring in high speed multiloop planar as well as spatial mechanisms based on the multibody system modeling approach. Dynamic analysis is prerequisite for the dynamic balancing of mechanisms. The balancing of mechanisms is one of the crucial steps in design of high speed machinery and is a difficult one due to trade-off amongst various dynamic quantities, e.g., shaking force, shaking moment, bearing reactions, and driving torques/forces. Hence, it is essentially an optimization problem where various dynamic quantities are computed repeatedly.

  • 61.pdf.jpg
  • Article


  • Authors: Nguyen, Thi Thanh Ha; Nguyen, Quang Bau; Pham, Khac Hung (2012)

  • In this paper, we numerically study the diffusion mechanism at atomic level in silica liquid via molecular dynamics simulation. The model consisting of 1998 particles and using the BKS potential has been constructed at the temperature from 2600 to 4500 K. Furthermore, we track the evolution of network units with x=4, 5 and 6 over different time. The simulation shows that the diffusivity depends strongly not only on the rate of the exchanging the coordinated oxygens, but also on the correlation effect. This effect is caused by the specific distribution of the exchanging coordinated oxygens (ECO) through the space which leads to spatially heterogeneous dynamics in the liquid. Analyzing ...

  • 85.pdf.jpg
  • Article


  • Authors: Nguyen, Thi Thanh Ha; Pham, Khac Hung (2013)

  • Diffusion mechanism and dynamics in Al2O3 liquidhave been studied via molecular dynamics simulation. Six models with different density and at temperature of 3000 K have been used to study the atomistic mechanism governing the process of the bond-breaking and bond-reformation (the transition AlOx®AlOx+1 and AlOx®AlOx-1). Calculation shows that the diffusion of particle Al is realized via the transition AlOx®AlOx±1 and the rate of transition AlOx®AlOx±1 monotonously increases with pressure. When applying pressure to liquid the diffusion mechanism changes from strong localization of transitions SiOx®SiOx±1 in the sample at ambient pressure to uniform distribution transitions SiOx®SiOx±1...

Browsing by Subject Dynamics

Jump to: 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
or enter first few letters:  
Showing results 1 to 3 of 3
  • 923.pdf.jpg
  • Book


  • Authors: Chaudhary, Himanshu; Saha, Subir Kumar (2008)

  • This monograph develops a unified methodology for dynamic analysis and minimization of the inertia-induced forces occurring in high speed multiloop planar as well as spatial mechanisms based on the multibody system modeling approach. Dynamic analysis is prerequisite for the dynamic balancing of mechanisms. The balancing of mechanisms is one of the crucial steps in design of high speed machinery and is a difficult one due to trade-off amongst various dynamic quantities, e.g., shaking force, shaking moment, bearing reactions, and driving torques/forces. Hence, it is essentially an optimization problem where various dynamic quantities are computed repeatedly.

  • 61.pdf.jpg
  • Article


  • Authors: Nguyen, Thi Thanh Ha; Nguyen, Quang Bau; Pham, Khac Hung (2012)

  • In this paper, we numerically study the diffusion mechanism at atomic level in silica liquid via molecular dynamics simulation. The model consisting of 1998 particles and using the BKS potential has been constructed at the temperature from 2600 to 4500 K. Furthermore, we track the evolution of network units with x=4, 5 and 6 over different time. The simulation shows that the diffusivity depends strongly not only on the rate of the exchanging the coordinated oxygens, but also on the correlation effect. This effect is caused by the specific distribution of the exchanging coordinated oxygens (ECO) through the space which leads to spatially heterogeneous dynamics in the liquid. Analyzing ...

  • 85.pdf.jpg
  • Article


  • Authors: Nguyen, Thi Thanh Ha; Pham, Khac Hung (2013)

  • Diffusion mechanism and dynamics in Al2O3 liquidhave been studied via molecular dynamics simulation. Six models with different density and at temperature of 3000 K have been used to study the atomistic mechanism governing the process of the bond-breaking and bond-reformation (the transition AlOx®AlOx+1 and AlOx®AlOx-1). Calculation shows that the diffusion of particle Al is realized via the transition AlOx®AlOx±1 and the rate of transition AlOx®AlOx±1 monotonously increases with pressure. When applying pressure to liquid the diffusion mechanism changes from strong localization of transitions SiOx®SiOx±1 in the sample at ambient pressure to uniform distribution transitions SiOx®SiOx±1...