Pantograph–catenary dynamics simulation

This paper presents a detailed overview of CANDY, a catenary-pantograph dynamic interaction software. Authors describe the main key points of the formulation, focusing on its time-integration scheme, the pantograph and contact models as well as the solution of the initial equilibrium problem. Nonetheless one of the most important features of CANDY is its moving finite element mesh, which enables accurate results without excessive computational cost. The validation of the model against the European Standard EN 50318 and some conclusions and comments about the results of the benchmark are also included.

Section: Catenary Dynamicsmentioning

confidence: 99%

CANDY statement of methods

Sanchez-Rebollo

Carnicero

Jiménez-Octavio

2014

“…In subsequent studies in which catenary wires were modelled as strings or beams to analyse catenaries with highly elastic behaviour, problems were solved by using methods such as the finite differences and mode superposition methods. [4,[7][8][9] Although these approaches broadly provided intuitive insights into static and dynamic behaviour, they cannot reflect the characteristics of a real system (e.g. its detailed design specifications).…”

Section: Introductionmentioning

confidence: 99%

Analysis of dynamic interaction between catenary and pantograph with experimental verification and performance evaluation in new high-speed line

Lee

Park

Oh³

et al. 2015

Understanding the dynamic interaction between the catenary and pantograph of a high-speed train is the one of the most important technical issues in the railway industry. This is because the catenarypantograph system plays a crucial role in providing electric power to the railway vehicle for stable operation. The aim of the present paper is to estimate the current-collection performance of this system by using numerical analysis, in particular, the flexible multibody dynamic analysis technique. To implement large deformable catenary wires, an absolute nodal coordinate formulation is used for the cable element. Additionally, an efficient contact element and an interactive model for the catenarypantograph system are introduced. Each developed model is then used for analytical and experimental verification. Actual on-line test results of existing high-speed railway vehicles are presented and used to verify the analysis model. Finally, the performance characteristics of a new 400 km/h-class high-speed line are estimated and evaluated on the basis of international standards.

“…Many of them are based on the finite element method. [4][5][6] Gasen-do FE is characterised by the following capabilities.…”

Section: Introductionmentioning

confidence: 99%

‘Gasen-do FE’ statement of methods

Ikeda

2014

Gasen-do FE is a simulation software for pantograph/catenary dynamic interaction analysis. Gasendo FE is based on the non-linear finite element method, and its code is implemented in Matlab. This program corresponds to 2D and 3D models of simple and compound catenaries. Steady arms and catenary suspension equipments such as droppers and hangers are modelled as bar elements taking into consideration the tangential stiffness due to their geometrical non-linearity. It is possible to simulate the effect of slackening of droppers and hangers. This paper will introduce the computational algorithm of this program and the validation result by comparing with experimental data.