Static and dynamic behaviors of the two-dimensional XY gauge glass

1996 ◽  
Vol 46 (S4) ◽  
pp. 2279-2280
Author(s):  
M. Y. Choi ◽  
S. Y. Park ◽  
B. J. Kim
Keyword(s):  
Two Dimensional ◽  
Dynamic Behaviors ◽  
Gauge Glass

scholarly journals Phase transition in the two-dimensional gauge glass

1999 ◽  
Vol 60 (6) ◽  
pp. 4070-4073 ◽  
Author(s):  
M. Y. Choi ◽  
Sung Yong Park
Keyword(s):  
Phase Transition ◽  
Two Dimensional ◽  
Gauge Glass

scholarly journals Dynamics of glass phases in the two-dimensional gauge glass model

2008 ◽  
Vol 78 (5) ◽  
Author(s):  
Qing-Hu Chen ◽  
Jian-Ping Lv ◽  
Huan Liu
Keyword(s):  
Two Dimensional ◽  
Glass Model ◽  
Gauge Glass

EFFECT OF IMPROPER BALLAST PACKING/TAMPING ON DYNAMIC BEHAVIORS OF ON-TRACK RAILWAY CONCRETE SLEEPER

2007 ◽  
Vol 07 (01) ◽  
pp. 167-177 ◽  
Author(s):  
SAKDIRAT KAEWUNRUEN ◽  
ALEX M. REMENNIKOV
Keyword(s):  
Finite Element ◽  
Free Vibration ◽  
Dynamic Interaction ◽  
Two Dimensional ◽  
Shear Deformations ◽  
Dynamic Behaviors ◽  
Dimensional Finite Element ◽  
Parametric Studies ◽  
Nonlinear Distribution

Ballasted railway tracks are impaired due to either normal or abnormal operations. One of the problems is the differential settlements along the track. Clearly, there is the need to maintain periodically the track substructures by means of ballast packing/tamping. Inappropriate conducts result in the nonlinear distributions of support stiffness. This study firstly demonstrates the effects of improper ballast packing/tamping on the free vibration behaviors of in situ railway concrete sleepers. The two-dimensional finite element modeling of an in situ concrete sleeper was employed in the parametric studies. This model takes into account the coupled flexural-and-shear deformations of concrete sleepers, elastic displacements of fastening system, and nonlinear dynamic interaction between the sleeper and ballast support. Dynamic interaction between sleepers and ballast was investigated based on the nonlinear distribution of ballast support stiffness underneath the sleeper. Effects of both symmetrical and asymmetrical stiffness distributions on dynamic behaviors of the local in situ concrete sleeper were also highlighted.

GLOBAL DYNAMIC BEHAVIORS OF A TWO-DIMENSIONAL INTEGRAL-DIFFERENTIAL ALMOST PERIODIC SYSTEM WITH INFINITE DELAYS AND DISCRETE DELAYS

2008 ◽  
Vol 01 (04) ◽  
pp. 487-502 ◽  
Author(s):  
XINZHU MENG ◽  
TONGQIAN ZHANG
Keyword(s):  
Periodic System ◽  
Sufficient Conditions ◽  
Computational Technique ◽  
Two Dimensional ◽  
Almost Periodic ◽  
Dynamic Behaviors ◽  
Global Dynamic ◽  
Infinite Delays ◽  
Discrete Delays ◽  
Dimensional Integral

A nonautomous two-dimensional integral-differential Lotka–Volterra almost periodic competitive system with infinite delays and discrete delays is considered. By use of the computational technique on functional differential equation, we obtain the sufficient conditions for the permanence and the global asymptotic stability of the system. By using almost periodic functional hull theory, we show that the almost periodic system has a unique strictly positive almost periodic solution which is globally asymptotically stable. Our results show that the global dynamic behaviors of the system is dependent of time delays.

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