A Two-Step Composite Time Integration Scheme for Vehicle-Track Interaction Analysis considering Contact Separation
The two-step composite time integration scheme is combined with the linear contact relation between the wheel and rail (termed the two-step method) to solve coupled vehicle-track dynamic problems. First, two coupled vehicle-track models with different degrees-of-freedom are constructed, in which a v...
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2019/1212069 |
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| _version_ | 1832562823992967168 |
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| author | Ya Gao Jin Shi Chenxu Lu |
| author_facet | Ya Gao Jin Shi Chenxu Lu |
| author_sort | Ya Gao |
| collection | DOAJ |
| description | The two-step composite time integration scheme is combined with the linear contact relation between the wheel and rail (termed the two-step method) to solve coupled vehicle-track dynamic problems. First, two coupled vehicle-track models with different degrees-of-freedom are constructed, in which a vehicle-track system is modeled as two subsystems and the interaction between the two subsystems is implemented via kinematic constraints. Then, the two-step method is applied in the models to simulate several cases, and the accuracy and efficiency of this method are discussed in comparison with additional methods of the Newmark family. Contact separation can also be simulated using the same scheme without causing spurious oscillations for large integration steps. The results indicate that track irregularities can cause wheels to momentarily lose contact with the track, causing large impacts between the wheels and rail. Additionally, with the increase of the running velocity, contact separation will occur more frequently. The adoption of the two-step integration method can ensure the accuracy of solutions and significantly increase the computational efficiency; moreover, the matrixes representing the model information will not change during the calculation process, so the substructure data exported from commercial finite element software can be directly adopted. |
| format | Article |
| id | doaj-art-876e675ea2af4b4aa2fff774349e04c8 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-876e675ea2af4b4aa2fff774349e04c82025-02-03T01:21:40ZengWileyShock and Vibration1070-96221875-92032019-01-01201910.1155/2019/12120691212069A Two-Step Composite Time Integration Scheme for Vehicle-Track Interaction Analysis considering Contact SeparationYa Gao0Jin Shi1Chenxu Lu2School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, ChinaSchool of Civil Engineering, Beijing Jiaotong University, Beijing 100044, ChinaSchool of Civil Engineering, Beijing Jiaotong University, Beijing 100044, ChinaThe two-step composite time integration scheme is combined with the linear contact relation between the wheel and rail (termed the two-step method) to solve coupled vehicle-track dynamic problems. First, two coupled vehicle-track models with different degrees-of-freedom are constructed, in which a vehicle-track system is modeled as two subsystems and the interaction between the two subsystems is implemented via kinematic constraints. Then, the two-step method is applied in the models to simulate several cases, and the accuracy and efficiency of this method are discussed in comparison with additional methods of the Newmark family. Contact separation can also be simulated using the same scheme without causing spurious oscillations for large integration steps. The results indicate that track irregularities can cause wheels to momentarily lose contact with the track, causing large impacts between the wheels and rail. Additionally, with the increase of the running velocity, contact separation will occur more frequently. The adoption of the two-step integration method can ensure the accuracy of solutions and significantly increase the computational efficiency; moreover, the matrixes representing the model information will not change during the calculation process, so the substructure data exported from commercial finite element software can be directly adopted.http://dx.doi.org/10.1155/2019/1212069 |
| spellingShingle | Ya Gao Jin Shi Chenxu Lu A Two-Step Composite Time Integration Scheme for Vehicle-Track Interaction Analysis considering Contact Separation Shock and Vibration |
| title | A Two-Step Composite Time Integration Scheme for Vehicle-Track Interaction Analysis considering Contact Separation |
| title_full | A Two-Step Composite Time Integration Scheme for Vehicle-Track Interaction Analysis considering Contact Separation |
| title_fullStr | A Two-Step Composite Time Integration Scheme for Vehicle-Track Interaction Analysis considering Contact Separation |
| title_full_unstemmed | A Two-Step Composite Time Integration Scheme for Vehicle-Track Interaction Analysis considering Contact Separation |
| title_short | A Two-Step Composite Time Integration Scheme for Vehicle-Track Interaction Analysis considering Contact Separation |
| title_sort | two step composite time integration scheme for vehicle track interaction analysis considering contact separation |
| url | http://dx.doi.org/10.1155/2019/1212069 |
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