Research on safety of EMUs under high-speed collision with large animals
In order to study the safety of EMUs under high-speed collision with large animals, a three-dimensional curved surface model of deer was generated through physical scanning and data processing, and then a finite element stack model of deer was established. With a kind of elastic-plastic material sel...
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Editorial Department of Electric Drive for Locomotives
2022-09-01
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| Series: | 机车电传动 |
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| Online Access: | http://edl.csrzic.com/thesisDetails#10.13890/j.issn.1000-128X.2022.05.005 |
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| _version_ | 1849729391027814400 |
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| author | YUE Yixin ZHU Wei |
| author_facet | YUE Yixin ZHU Wei |
| author_sort | YUE Yixin |
| collection | DOAJ |
| description | In order to study the safety of EMUs under high-speed collision with large animals, a three-dimensional curved surface model of deer was generated through physical scanning and data processing, and then a finite element stack model of deer was established. With a kind of elastic-plastic material selected to simulate deer’s body skeleton, which can simulate skeleton damage by inputting the plastic failure strain in the parameter field of material attributes, and a constitutive model of linear elastic materials was selected to simulate their muscle and skin, and the pendulum side collisions were carried out for verification. By analyzing the spatial relationship between the EMUs head and animals crossing the track, and referring to the definitions of frontal collision and offset collision between trams and pedestrians specified in CEN/TR 17420: 2020 standard, two collision scenarios, i.e. frontal collision and offset collision, were set between the train at the maximum operating speed of 160 km/h and deer invading the track. The results of the finite element simulation analysis are as follows. Under the frontal collision scenario, the mean deceleration of the body of the head car is the highest, and the maximum mean deceleration in any 30 ms and 120 ms intervals is 0.73<italic>g</italic> and 0.21<italic>g</italic> respectively, which is lower than the requirements of 10<italic>g</italic> and 5<italic>g</italic> specified in EN 15227 standard; The maximum wheelset lifting amount is 1.64 mm, which is far less than 75% of the nominal flange height of 28 mm. In the offset collision scenario, the mean deceleration of the body of the head car is the highest, and the maximum mean deceleration in any 30 ms and 120 ms intervals is 0.53<italic>g</italic> and 0.13<italic>g</italic> respectively, which is lower than the requirements specified of 10<italic>g</italic> and 5<italic>g</italic> in EN 15227 standard; The maximum wheelset lifting amount is 1.75 mm, which is far less than 75% of the nominal flange height of 28 mm. Under the two collision scenarios, the carbody structure, coupler, anti-creeper, main energy absorber and pilot are free of plastic deformation, and all the evaluation indicators meet the requirements of EN 15227:2020 standard, which indicates that the designed EMUs is safe and reliable, and the carbody can withstand high-speed collisions of deer or other large animal. |
| format | Article |
| id | doaj-art-3c2116d0037e4ff89d93490e844a0cde |
| institution | DOAJ |
| issn | 1000-128X |
| language | zho |
| publishDate | 2022-09-01 |
| publisher | Editorial Department of Electric Drive for Locomotives |
| record_format | Article |
| series | 机车电传动 |
| spelling | doaj-art-3c2116d0037e4ff89d93490e844a0cde2025-08-20T03:09:15ZzhoEditorial Department of Electric Drive for Locomotives机车电传动1000-128X2022-09-01283432276221Research on safety of EMUs under high-speed collision with large animalsYUE YixinZHU WeiIn order to study the safety of EMUs under high-speed collision with large animals, a three-dimensional curved surface model of deer was generated through physical scanning and data processing, and then a finite element stack model of deer was established. With a kind of elastic-plastic material selected to simulate deer’s body skeleton, which can simulate skeleton damage by inputting the plastic failure strain in the parameter field of material attributes, and a constitutive model of linear elastic materials was selected to simulate their muscle and skin, and the pendulum side collisions were carried out for verification. By analyzing the spatial relationship between the EMUs head and animals crossing the track, and referring to the definitions of frontal collision and offset collision between trams and pedestrians specified in CEN/TR 17420: 2020 standard, two collision scenarios, i.e. frontal collision and offset collision, were set between the train at the maximum operating speed of 160 km/h and deer invading the track. The results of the finite element simulation analysis are as follows. Under the frontal collision scenario, the mean deceleration of the body of the head car is the highest, and the maximum mean deceleration in any 30 ms and 120 ms intervals is 0.73<italic>g</italic> and 0.21<italic>g</italic> respectively, which is lower than the requirements of 10<italic>g</italic> and 5<italic>g</italic> specified in EN 15227 standard; The maximum wheelset lifting amount is 1.64 mm, which is far less than 75% of the nominal flange height of 28 mm. In the offset collision scenario, the mean deceleration of the body of the head car is the highest, and the maximum mean deceleration in any 30 ms and 120 ms intervals is 0.53<italic>g</italic> and 0.13<italic>g</italic> respectively, which is lower than the requirements specified of 10<italic>g</italic> and 5<italic>g</italic> in EN 15227 standard; The maximum wheelset lifting amount is 1.75 mm, which is far less than 75% of the nominal flange height of 28 mm. Under the two collision scenarios, the carbody structure, coupler, anti-creeper, main energy absorber and pilot are free of plastic deformation, and all the evaluation indicators meet the requirements of EN 15227:2020 standard, which indicates that the designed EMUs is safe and reliable, and the carbody can withstand high-speed collisions of deer or other large animal.http://edl.csrzic.com/thesisDetails#10.13890/j.issn.1000-128X.2022.05.005EMUslarge animalcrashworthinesssafetyfinite elementsimulation |
| spellingShingle | YUE Yixin ZHU Wei Research on safety of EMUs under high-speed collision with large animals 机车电传动 EMUs large animal crashworthiness safety finite element simulation |
| title | Research on safety of EMUs under high-speed collision with large animals |
| title_full | Research on safety of EMUs under high-speed collision with large animals |
| title_fullStr | Research on safety of EMUs under high-speed collision with large animals |
| title_full_unstemmed | Research on safety of EMUs under high-speed collision with large animals |
| title_short | Research on safety of EMUs under high-speed collision with large animals |
| title_sort | research on safety of emus under high speed collision with large animals |
| topic | EMUs large animal crashworthiness safety finite element simulation |
| url | http://edl.csrzic.com/thesisDetails#10.13890/j.issn.1000-128X.2022.05.005 |
| work_keys_str_mv | AT yueyixin researchonsafetyofemusunderhighspeedcollisionwithlargeanimals AT zhuwei researchonsafetyofemusunderhighspeedcollisionwithlargeanimals |