Finite element periodic catenary model to perform HIL pantograph tests considering non-linear dropper behaviour

Gil, Jaime Gómez; Tur, M.; Gregori, S.; Correcher, A.; Fuenmayor, F. J.

doi:10.1016/j.finel.2022.103816

Cited by 6 publications

(18 citation statements)

References 25 publications

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“…For example, the periodic finite element model catenary presented in [ 27 ] was tested as explained, showing low error and, thus, validating the HIL simulation setup. Figure 8 shows a comparison of the contact force for a span between the simulation and the test.…”

Section: Resultsmentioning

confidence: 95%

“…Moreover, it is also mandatory to consider a catenary model as realistic and efficient as possible to be solved in real-time. To fulfill these requirements, we use the analytic catenary model proposed in [ 8 ] and a periodic catenary finite element model [ 27 ]. The code of the catenary model runs on an (Intel ® Core™ i9-9900K CPU, 3.6 GHz, 64 GB RAM) PC that allows high-speed processing.…”

Section: Methodsmentioning

confidence: 99%

“…Although ideally, the system reacts to the force immediately, in the HIL simulation, some delays must be considered. The Virtual Catenary algorithm considers the system’s delays to compute the CP to be set as a reference for the motor drive (see for example [ 27 ] for details of the algorithm). The force signal is conditioned with an amplifier (NEC AS1201 AC Strain) that filters and increases the voltage levels.…”

Section: Methodsmentioning

confidence: 99%

“…The Universitat Politècnica de València in Spain has developed a test bench [ 26 , 27 ] capable of real-time simulating finite element catenaries with sample times up to 2 ms. A detailed description of this test bench and its improvements is shown in Section 2 .…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Hardware-in-the-Loop Test Bench for Simulation of Catenary–Pantograph Interaction (CPI) with Linear Camera Measurement

Correcher

Ricolfe-Viala

Tur

et al. 2023

Sensors

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Catenary–pantograph contact force is generally used for assessment of the current collection quality. A good current collection quality not only increases catenary lifetime but also keeps a stable electric supply and helps to avoid accidents. Low contact forces lead to electric arcs that degrade the catenary, and high contact forces generate excessive wear on the sliding surfaces. Railway track operators require track tests to ensure that catenary–pantograph force remains between safe values. However, a direct measure of the contact force requires an instrumented pantograph which is generally costly and complicated. This paper presents a test bench that allows testing virtual catenaries over real pantographs. Therefore, the contact point force behavior can be tested before the track test to guarantee that the test is passed. Moreover, due to its flexibility, the system can be used for model identification and validation, catenary testing, or contact loss simulation. The test bench also explores using computer vision as an additional sensor for each application. Results show that the system has high precision and flexibility in the available tests.

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Section: Resultsmentioning

confidence: 95%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Hardware-in-the-Loop Test Bench for Simulation of Catenary–Pantograph Interaction (CPI) with Linear Camera Measurement

Correcher

Ricolfe-Viala

Tur

et al. 2023

Sensors

Self Cite

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“…Daniel A. et.al [31] used the intermediate-complex method is more efficient than a fully resolved finite element simulation but more general than beam theory or homogenization. J. Gil et al [32] present a general method for computing the dynamic response of periodic infinite structures under a moving load. In this study, the CAD model is imported into ANSYS workbench for FEA characteristics and to validate the aforementioned analysis technique which is illustrated in Figure 1.…”

Section: Methodsmentioning

confidence: 99%

Effect of spatial moving structure and topology optimization of the CNC turning machine tools

Chan,

Reddy,

Ullah

et al. 2023

Int J Adv Manuf Technol

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In order to enhance the accuracy and productivity of CNC machine tools, Finite Element Method (FEM) is utilized for analyzing machining operations and machine tool structures. Through this approach, it becomes possible to assess and reduce machining errors, thereby improving the precision of machined parts. Additionally, by subjecting machine tool components to analysis of stress and deformations under real operating conditions, the overall performance and lifespan of the machine tool structures can be augmented. This study provides a comprehensive review of recent published papers focusing on the implementation of finite element methods for the analysis and optimization of CNC machine tool operations and structures. In this study, a virtual model of the Goodway CNC turning machine was used to study the machine's behavior. The first three vibrational modes analyzed through a modal analysis were 108.2Hz, 133.4Hz, and 191.7Hz, which were experimentally validated using modal tests. The design precision was supported using the harmonic response. For an applied external load of 500N on the head chuck, the tool turret's transient response was established through transient analysis at 0.4s. However, after the static analysis, the maximum deformation of the machine at the same external applied load on the tool turret was upheld at 7.6µm. The spatial position analysis rectified the modal performance of the machine at a variety of set working positions. As the principal cause of rigidity originates from the base of the machine, three sets of ground support combinations were claimed to test the machine's rigidity. After the topology optimization analysis was achieved, a better-optimized version of the design is suggested. The old and new models were compared, and an increase of 1.5% in the first three modal frequencies was observed.

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Hardware-in-the-loop simulations of a railway pantograph with a finite element periodic catenary model

Gil

Tur

Gregori

et al. 2023

Vehicle System Dynamics

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The pantograph-catenary dynamic interaction problem is addressed by Hardwarein-the-Loop (HIL) tests to simulate the dynamic interaction between a numerical model (the catenary) and a physical device (the pantograph). The real-time simulation requires a computationally efficient numerical model and an on time and accurate transference of the response to the pantograph, for which a Periodic Finite Element Model (PFEM) of the catenary is considered. Firstly because of the acceptable computation time required to solve it, makes it suitable for real-time simulations and, secondly, its ability to allow for the delay caused by the transfer of the numerical model response.The catenary PFEM we used considers the non-linear behaviour of the dropper slackening, leading to highly accurate HIL test results, which were validated up to a frequency of 25 Hz.

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Finite element periodic catenary model to perform HIL pantograph tests considering non-linear dropper behaviour

Cited by 6 publications

References 25 publications

Hardware-in-the-Loop Test Bench for Simulation of Catenary–Pantograph Interaction (CPI) with Linear Camera Measurement

Hardware-in-the-Loop Test Bench for Simulation of Catenary–Pantograph Interaction (CPI) with Linear Camera Measurement

Effect of spatial moving structure and topology optimization of the CNC turning machine tools

Hardware-in-the-loop simulations of a railway pantograph with a finite element periodic catenary model

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