Simulation of the Rupture of the Contact Wire of a High speed Catenary
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Pantograph
Line (geometry)
Contact force
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Numerical Analysis of the Dynamic Interaction Between Pantograph and Overhead Contact Line Using FEM
This study aims to create a numerical analysis model which can investigate the interaction between pantograph and overhead contact line used for railway vehicles, and validate the simulation results according to EN 50318 standards. Finite element analysis models of pantograph and overhead contact line are created using SAMCEF, a commercial FE analysis program, and mean, standard deviation, maximum and minimum values of contact forces are obtained. The simulation results are validated according to EN 50318, and the reliability of SAMCEF as an analysis solver of railway vehicle’s catenary system is discussed.
Pantograph
Catenary
Solver
Overhead line
Contact force
Line (geometry)
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The present on-board monitoring system for overhead contact lines mainly provides dynamic states of contact wire. However, its static states are more required for the maintenance work of the overhead contact line. Therefore, the authors have been developing on-board monitoring system to estimate static condition of the overhead contact line utilizing contact force measurement. This paper shows method to estimate static contact wire height and stagger only from on-board measurement data.
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Pantograph
Contact force
Contact system
Line (geometry)
Overhead line
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For preventing accident occurring at the contact area between overhead catenary system and pantograph, overhead catenary system must be carefully maintained, resulting in requiring heavy maintenance cost. The present on-board monitoring system for overhead contact lines mainly keeps watch on dynamic states of contact wire. However, its static states are extremely required for the efficient maintenance work of the overhead contact line. Therefore, the authors have been developing a method which estimates static height of contact wire by contact force and pantograph height. This paper describes the new method in detail and shows the verification results of on-track test.
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Pantograph
Contact system
Contact force
Overhead line
Line (geometry)
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An accident of pantograph and overhead catenary system occurs not so frequently. But, once such accident occurs, long down-time of train service is unavoidable. For preventing accident between overhead catenary system and pantograph, overhead catenary system requires a lot of maintenance cost. To reduce this maintenance cost, the authors have developed a method which estimates the static height of contact wire by the contact force and the pantograph height. This paper describes the new method in detail and shows some simulation and experimental results.
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Pantograph
Contact system
Contact force
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Catenary
Pantograph
Contact force
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It is important to understand the dynamic behavior of overhead contact lines and pantographs to achieve stable power supply. For this purpose, simulation of catenary/pantograph dynamic interaction is often performed. However, since lumped-mass model of a pantograph has been used in the conventional simulation, the three-dimensional dynamic behavior of the pantograph is not able to be calculated. The authors developed a new simulation method using a threedimensional model of overhead contact lines and a pantograph. This paper shows contact analysis between contact lines and a pantograph, and a simulation result when a pantograph passes a crossing section.
Pantograph
Catenary
Overhead line
Contact force
Dynamic simulation
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In this study, we developed the simulation program of an overhead catenary-pantograph system. The overhead catenary is modeled with point mass and the pantograph is replaced wi th 3 d.o.f model which is composed of mass, spring and damper. Using the developed program, we analyzed the static structure of the overhead catenary and the dynamic characteristics of an overhead catenary-pantograph system such as uplift displacement of contact wire and contact force. we compared the analysis resul ts wi th the results of GASENDO software developed at RTRI in Japan. The behaviors of uplift displacement of contact wire and contact force were similar with the results of GASENDO software.
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Pantograph
Contact force
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Catenary
Pantograph
Line (geometry)
Contact force
Service life
Abrasion (mechanical)
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The article took the severe pantograph-catenary defects occurred in the operation as an example, put forward several kinds of rush repair schemes of long damaged longitudinal carrying rope defects, and demonstrated the feasibility of the schemes. It provided referential experiences for the OCS’s maintenance departments of the metro to improve the ability of rush repair.
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Pantograph
Wire Rope
Contact system
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Abstract In this paper an innovative active pantograph for high-speed trains is proposed. The results presented are based on extensive simulation tests. The parameters used in the simulation are those of a real pantograph for high-speed trains: the pantograph model is modified by adding a wire actuation, in order to exert a constant contact force between the moving pantograph and the overhead contact wire. A wire-actuated control and contact force observers are proposed as effective solutions in the case of a possible implementation.
Pantograph
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Contact force
Contact system
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