地铁转向架排障器的结构改进及疲劳性能评估
In view of the fracture and edge crack initiation of the bogie cowcatcher during the service of a metro train,the failure causes are analyzed,and a fatigue performance evaluation method combining finite element analysis and dynamic stress test is proposed to verify the rationality of improving the s...
| Main Authors: | , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Journal of Mechanical Strength
2021-01-01
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| Series: | Jixie qiangdu |
| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2021.01.032 |
| _version_ | 1826871868695511040 |
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| author | 许喆 智鹏鹏 刘东亮 |
| author_facet | 许喆 智鹏鹏 刘东亮 |
| author_sort | 许喆 |
| collection | DOAJ |
| description | In view of the fracture and edge crack initiation of the bogie cowcatcher during the service of a metro train,the failure causes are analyzed,and a fatigue performance evaluation method combining finite element analysis and dynamic stress test is proposed to verify the rationality of improving the structural design of the cowcatcher.Firstly,the structure of the cowcatcher with fracture or edge crack is analyzed in the aspects of design,structure,manufacturing and raw materials,and the corresponding structural improvement scheme is proposed.Secondly,the static strength and fatigue strength of the structure for the new cowcatcher are analyzed to clarify the dangerous parts according to the EN13749 standard.Thirdly,determine the strain gauge layout plan and conduct line tests considering the simulation analysis results and the operating space comprehensively.Finally,the fatigue performance evaluation of the cowcatcher is carried out by miner’s linear cumulative damage rule and IIW recommended S-N curve.The results show that the fatigue performance of the new type of cowcatcher based on finite element analysis and dynamic stress test meet the requirements,and the two support each other to further verify the rationality of the new structure design.Simultaneously,the simulation analysis results provide a theoretical reference for the reasonable arrangement of measuring points. |
| first_indexed | 2024-03-12T20:42:17Z |
| format | Article |
| id | doaj.art-861fa805d5ba46c182b0119b127dc6f7 |
| institution | Directory Open Access Journal |
| issn | 1001-9669 |
| language | zho |
| last_indexed | 2025-02-16T23:47:14Z |
| publishDate | 2021-01-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj.art-861fa805d5ba46c182b0119b127dc6f72025-01-15T02:26:47ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692021-01-0121722430610165地铁转向架排障器的结构改进及疲劳性能评估许喆智鹏鹏刘东亮In view of the fracture and edge crack initiation of the bogie cowcatcher during the service of a metro train,the failure causes are analyzed,and a fatigue performance evaluation method combining finite element analysis and dynamic stress test is proposed to verify the rationality of improving the structural design of the cowcatcher.Firstly,the structure of the cowcatcher with fracture or edge crack is analyzed in the aspects of design,structure,manufacturing and raw materials,and the corresponding structural improvement scheme is proposed.Secondly,the static strength and fatigue strength of the structure for the new cowcatcher are analyzed to clarify the dangerous parts according to the EN13749 standard.Thirdly,determine the strain gauge layout plan and conduct line tests considering the simulation analysis results and the operating space comprehensively.Finally,the fatigue performance evaluation of the cowcatcher is carried out by miner’s linear cumulative damage rule and IIW recommended S-N curve.The results show that the fatigue performance of the new type of cowcatcher based on finite element analysis and dynamic stress test meet the requirements,and the two support each other to further verify the rationality of the new structure design.Simultaneously,the simulation analysis results provide a theoretical reference for the reasonable arrangement of measuring points.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2021.01.032 |
| spellingShingle | 许喆 智鹏鹏 刘东亮 地铁转向架排障器的结构改进及疲劳性能评估 Jixie qiangdu |
| title | 地铁转向架排障器的结构改进及疲劳性能评估 |
| title_full | 地铁转向架排障器的结构改进及疲劳性能评估 |
| title_fullStr | 地铁转向架排障器的结构改进及疲劳性能评估 |
| title_full_unstemmed | 地铁转向架排障器的结构改进及疲劳性能评估 |
| title_short | 地铁转向架排障器的结构改进及疲劳性能评估 |
| title_sort | 地铁转向架排障器的结构改进及疲劳性能评估 |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2021.01.032 |
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