RESEARCH ON VIBRATION FATIGUE LIFE OF VEHICLE EXHAUST SYSTEM UNDER TEMPERATURE FIELD DISTRIBUTION
Aiming at analyzing the influence of thermal load and mechanical load on the vibration characteristics and fatigue life of the exhaust system,the finite element model and modal test were conducted by modal analysis. The temperature field distribution of the exhaust system was obtained via CFD analys...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Journal of Mechanical Strength
2020-01-01
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| Series: | Jixie qiangdu |
| Subjects: | |
| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2020.03.023 |
| _version_ | 1797767648610615296 |
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| author | SHU AiMei WENG JianSheng HAN Qiang YU WenJie SUN PengFei LI JiWei |
| author_facet | SHU AiMei WENG JianSheng HAN Qiang YU WenJie SUN PengFei LI JiWei |
| author_sort | SHU AiMei |
| collection | DOAJ |
| description | Aiming at analyzing the influence of thermal load and mechanical load on the vibration characteristics and fatigue life of the exhaust system,the finite element model and modal test were conducted by modal analysis. The temperature field distribution of the exhaust system was obtained via CFD analysis. Finally,a frequency-domain called Dirlik was applied to analyze the vibration thermal fatigue life of this exhaust system. The results show that the structural modal frequency decreases under the temperature field distribution,and the fatigue life of the exhaust system considering temperature field distribution is 90. 8% lower than that not considering temperature distribution. Therefore,the temperature field distribution has significant effects on the fatigue life of the exhaust system,and it can’t be ignored during the development process. |
| first_indexed | 2024-03-12T20:42:50Z |
| format | Article |
| id | doaj.art-25063b5d51f541b0a0aba924c9d316be |
| institution | Directory Open Access Journal |
| issn | 1001-9669 |
| language | zho |
| last_indexed | 2024-03-12T20:42:50Z |
| publishDate | 2020-01-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj.art-25063b5d51f541b0a0aba924c9d316be2023-08-01T07:51:28ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692020-01-014266767430608052RESEARCH ON VIBRATION FATIGUE LIFE OF VEHICLE EXHAUST SYSTEM UNDER TEMPERATURE FIELD DISTRIBUTIONSHU AiMeiWENG JianShengHAN QiangYU WenJieSUN PengFeiLI JiWeiAiming at analyzing the influence of thermal load and mechanical load on the vibration characteristics and fatigue life of the exhaust system,the finite element model and modal test were conducted by modal analysis. The temperature field distribution of the exhaust system was obtained via CFD analysis. Finally,a frequency-domain called Dirlik was applied to analyze the vibration thermal fatigue life of this exhaust system. The results show that the structural modal frequency decreases under the temperature field distribution,and the fatigue life of the exhaust system considering temperature field distribution is 90. 8% lower than that not considering temperature distribution. Therefore,the temperature field distribution has significant effects on the fatigue life of the exhaust system,and it can’t be ignored during the development process.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2020.03.023Exhaust system;Vibration fatigue;Fluid-structure coupling;Modal analysis;Temperature field distribution;Vibration characteristics |
| spellingShingle | SHU AiMei WENG JianSheng HAN Qiang YU WenJie SUN PengFei LI JiWei RESEARCH ON VIBRATION FATIGUE LIFE OF VEHICLE EXHAUST SYSTEM UNDER TEMPERATURE FIELD DISTRIBUTION Jixie qiangdu Exhaust system;Vibration fatigue;Fluid-structure coupling;Modal analysis;Temperature field distribution;Vibration characteristics |
| title | RESEARCH ON VIBRATION FATIGUE LIFE OF VEHICLE EXHAUST SYSTEM UNDER TEMPERATURE FIELD DISTRIBUTION |
| title_full | RESEARCH ON VIBRATION FATIGUE LIFE OF VEHICLE EXHAUST SYSTEM UNDER TEMPERATURE FIELD DISTRIBUTION |
| title_fullStr | RESEARCH ON VIBRATION FATIGUE LIFE OF VEHICLE EXHAUST SYSTEM UNDER TEMPERATURE FIELD DISTRIBUTION |
| title_full_unstemmed | RESEARCH ON VIBRATION FATIGUE LIFE OF VEHICLE EXHAUST SYSTEM UNDER TEMPERATURE FIELD DISTRIBUTION |
| title_short | RESEARCH ON VIBRATION FATIGUE LIFE OF VEHICLE EXHAUST SYSTEM UNDER TEMPERATURE FIELD DISTRIBUTION |
| title_sort | research on vibration fatigue life of vehicle exhaust system under temperature field distribution |
| topic | Exhaust system;Vibration fatigue;Fluid-structure coupling;Modal analysis;Temperature field distribution;Vibration characteristics |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2020.03.023 |
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