Dynamical Effect Investigations of Component’s Internal Interface by Using Techniques of Rigid-Flex Coupling Simulation
As a component of servicing car body, the internal interfaces of aluminum alloy carbody include all connections of equipments hanged under floor and mounted on roof, which are expected to form the weak coupling relationship. For an imported prototype with primary hunting phenomenon, a dynamical desi...
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| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2021/6509950 |
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| author | Te-te Li Wei Du Ming-wei Piao Yong-zheng Guo Shi-ying Jin Chun-ge Nie Ji Fang Ya-jun Cheng Jun Fan |
| author_facet | Te-te Li Wei Du Ming-wei Piao Yong-zheng Guo Shi-ying Jin Chun-ge Nie Ji Fang Ya-jun Cheng Jun Fan |
| author_sort | Te-te Li |
| collection | DOAJ |
| description | As a component of servicing car body, the internal interfaces of aluminum alloy carbody include all connections of equipments hanged under floor and mounted on roof, which are expected to form the weak coupling relationship. For an imported prototype with primary hunting phenomenon, a dynamical design methodology of speeding-up bogies was proposed. The analysis graph of full-vehicle stability properties and variation patterns is used to clarify a self-adaptive improvement direction, i.e., λeN ≥ λemin, and λemin = (0.03–0.05). Therefore, the central hollow tread wear can be self-cleaned in time or regularly by crossing over the dedicated lines of different speed-grades. The modified strategy with strong/weak internal interface transaction of servicing car body was furthermore formulated based on the dynamical condensation method of component interface displacements. The causal relationship between bogie vibration alarm and car body fluttering phenomenon was then demonstrated by using techniques of rigid-flex coupling simulation. The self-excited vibration of traction converter intersects with the unstable hunting oscillation, ca. 9.2/9.3 Hz, which is consistent with the conclusions of tracking-test investigations on two car body fluttering formations. The technical space to promote the construction speed is thereby lost completely because of ride comfort decline, unsafe vibration of onboard electrical equipments, and weld fatigue damage of aluminum alloy car body. However, the rigid-flex coupling simulation analyses of trailer TC02/07 confirm that the safety threshold of bogie vibration warning can be appropriately increased as long as the lateral modal frequency of traction converters is greater than 12 Hz, preferably close to 14 Hz. |
| format | Article |
| id | doaj-art-83bcd350bd514c0ca1a056ac5a180ff8 |
| institution | Kabale University |
| issn | 1875-9203 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-83bcd350bd514c0ca1a056ac5a180ff82025-08-20T03:37:11ZengWileyShock and Vibration1875-92032021-01-01202110.1155/2021/6509950Dynamical Effect Investigations of Component’s Internal Interface by Using Techniques of Rigid-Flex Coupling SimulationTe-te Li0Wei Du1Ming-wei Piao2Yong-zheng Guo3Shi-ying Jin4Chun-ge Nie5Ji Fang6Ya-jun Cheng7Jun Fan8Mech. Eng. SchoolMech. Eng. SchoolMech. Eng. SchoolMech. Eng. SchoolMech. Eng. SchoolRolling Stock Eng. SchoolRolling Stock Eng. SchoolCRRC Changchun Railway Vehicle Co. LtdCRRC Changchun Railway Vehicle Co. LtdAs a component of servicing car body, the internal interfaces of aluminum alloy carbody include all connections of equipments hanged under floor and mounted on roof, which are expected to form the weak coupling relationship. For an imported prototype with primary hunting phenomenon, a dynamical design methodology of speeding-up bogies was proposed. The analysis graph of full-vehicle stability properties and variation patterns is used to clarify a self-adaptive improvement direction, i.e., λeN ≥ λemin, and λemin = (0.03–0.05). Therefore, the central hollow tread wear can be self-cleaned in time or regularly by crossing over the dedicated lines of different speed-grades. The modified strategy with strong/weak internal interface transaction of servicing car body was furthermore formulated based on the dynamical condensation method of component interface displacements. The causal relationship between bogie vibration alarm and car body fluttering phenomenon was then demonstrated by using techniques of rigid-flex coupling simulation. The self-excited vibration of traction converter intersects with the unstable hunting oscillation, ca. 9.2/9.3 Hz, which is consistent with the conclusions of tracking-test investigations on two car body fluttering formations. The technical space to promote the construction speed is thereby lost completely because of ride comfort decline, unsafe vibration of onboard electrical equipments, and weld fatigue damage of aluminum alloy car body. However, the rigid-flex coupling simulation analyses of trailer TC02/07 confirm that the safety threshold of bogie vibration warning can be appropriately increased as long as the lateral modal frequency of traction converters is greater than 12 Hz, preferably close to 14 Hz.http://dx.doi.org/10.1155/2021/6509950 |
| spellingShingle | Te-te Li Wei Du Ming-wei Piao Yong-zheng Guo Shi-ying Jin Chun-ge Nie Ji Fang Ya-jun Cheng Jun Fan Dynamical Effect Investigations of Component’s Internal Interface by Using Techniques of Rigid-Flex Coupling Simulation Shock and Vibration |
| title | Dynamical Effect Investigations of Component’s Internal Interface by Using Techniques of Rigid-Flex Coupling Simulation |
| title_full | Dynamical Effect Investigations of Component’s Internal Interface by Using Techniques of Rigid-Flex Coupling Simulation |
| title_fullStr | Dynamical Effect Investigations of Component’s Internal Interface by Using Techniques of Rigid-Flex Coupling Simulation |
| title_full_unstemmed | Dynamical Effect Investigations of Component’s Internal Interface by Using Techniques of Rigid-Flex Coupling Simulation |
| title_short | Dynamical Effect Investigations of Component’s Internal Interface by Using Techniques of Rigid-Flex Coupling Simulation |
| title_sort | dynamical effect investigations of component s internal interface by using techniques of rigid flex coupling simulation |
| url | http://dx.doi.org/10.1155/2021/6509950 |
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