Identification of Track Stability Model Parameters Based on Numerical Experiments
In the article, an identification method of railway track stability model parameters based on energy equilibrium is presented by the authors. A study of two parameters directly influencing the continuous welded track (CWR) stability is described by the authors, i.e., the rail-sleeper structure stiff...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-01-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/2/570 |
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| author | Dorota Błaszkiewicz-Juszczęć Włodzimierz Czyczuła Dariusz Kudła |
| author_facet | Dorota Błaszkiewicz-Juszczęć Włodzimierz Czyczuła Dariusz Kudła |
| author_sort | Dorota Błaszkiewicz-Juszczęć |
| collection | DOAJ |
| description | In the article, an identification method of railway track stability model parameters based on energy equilibrium is presented by the authors. A study of two parameters directly influencing the continuous welded track (CWR) stability is described by the authors, i.e., the rail-sleeper structure stiffness B<sub>z</sub> is considered one beam, and the ballast lateral resistance r<sub>0</sub>. These parameters were estimated with the use of a numerical model for various railway track types. The adopted concept is based on the assumption that it is possible to determine substitute values for both parameters. Therefore, using one value of both of these parameters, we label them substitute parameters. The assumed numerical model forced lateral displacements of a track section, and, based on the obtained track section displacement results, energy equilibrium was determined. The equilibrium takes into account the work of external load and the bending work of rail-sleeper structure with the substitute stiffness B<sub>z</sub> and the ballast deformation work, also with the substitute value of lateral resistance r<sub>0</sub> with lateral displacement. The aim is to identify these substitute values to be used for analysing track stability with the semi-analytical model. These analyses are part of the studies related to the development of a method of assessing various methods of increasing track stability. |
| first_indexed | 2024-03-10T03:00:01Z |
| format | Article |
| id | doaj.art-9ae76dcae3e14105ad5bef2b1dd31d61 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T03:00:01Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-9ae76dcae3e14105ad5bef2b1dd31d612023-11-23T12:49:15ZengMDPI AGApplied Sciences2076-34172022-01-0112257010.3390/app12020570Identification of Track Stability Model Parameters Based on Numerical ExperimentsDorota Błaszkiewicz-Juszczęć0Włodzimierz Czyczuła1Dariusz Kudła2Faculty of Civil Engineering, Cracow University of Technology, ul. Warszawska 24, 31-155 Kraków, PolandFaculty of Civil Engineering, Cracow University of Technology, ul. Warszawska 24, 31-155 Kraków, PolandFaculty of Civil Engineering, Cracow University of Technology, ul. Warszawska 24, 31-155 Kraków, PolandIn the article, an identification method of railway track stability model parameters based on energy equilibrium is presented by the authors. A study of two parameters directly influencing the continuous welded track (CWR) stability is described by the authors, i.e., the rail-sleeper structure stiffness B<sub>z</sub> is considered one beam, and the ballast lateral resistance r<sub>0</sub>. These parameters were estimated with the use of a numerical model for various railway track types. The adopted concept is based on the assumption that it is possible to determine substitute values for both parameters. Therefore, using one value of both of these parameters, we label them substitute parameters. The assumed numerical model forced lateral displacements of a track section, and, based on the obtained track section displacement results, energy equilibrium was determined. The equilibrium takes into account the work of external load and the bending work of rail-sleeper structure with the substitute stiffness B<sub>z</sub> and the ballast deformation work, also with the substitute value of lateral resistance r<sub>0</sub> with lateral displacement. The aim is to identify these substitute values to be used for analysing track stability with the semi-analytical model. These analyses are part of the studies related to the development of a method of assessing various methods of increasing track stability.https://www.mdpi.com/2076-3417/12/2/570railway trackanalytical modelnumerical modelidentificationsubstitute stiffnessballast resistance |
| spellingShingle | Dorota Błaszkiewicz-Juszczęć Włodzimierz Czyczuła Dariusz Kudła Identification of Track Stability Model Parameters Based on Numerical Experiments Applied Sciences railway track analytical model numerical model identification substitute stiffness ballast resistance |
| title | Identification of Track Stability Model Parameters Based on Numerical Experiments |
| title_full | Identification of Track Stability Model Parameters Based on Numerical Experiments |
| title_fullStr | Identification of Track Stability Model Parameters Based on Numerical Experiments |
| title_full_unstemmed | Identification of Track Stability Model Parameters Based on Numerical Experiments |
| title_short | Identification of Track Stability Model Parameters Based on Numerical Experiments |
| title_sort | identification of track stability model parameters based on numerical experiments |
| topic | railway track analytical model numerical model identification substitute stiffness ballast resistance |
| url | https://www.mdpi.com/2076-3417/12/2/570 |
| work_keys_str_mv | AT dorotabłaszkiewiczjuszczec identificationoftrackstabilitymodelparametersbasedonnumericalexperiments AT włodzimierzczyczuła identificationoftrackstabilitymodelparametersbasedonnumericalexperiments AT dariuszkudła identificationoftrackstabilitymodelparametersbasedonnumericalexperiments |