RESEARCH ON SHUTDOWN STRESS AND FATIGUE LIFE OF AIR CONDITIONING PIPING
It is very important to determine the reasonable shutdown stress of air-conditioning piping,and it is related to the piping reliability and development cost. Firstly,the piping shutdown stress was studied through a large number of stress tests and statistical analysis methods. Then the piping shutdo...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of Mechanical Strength
2021-01-01
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| Series: | Jixie qiangdu |
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| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2021.05.033 |
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| _version_ | 1841535956848476160 |
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| author | WANG Xuan ZHANG JieXi HUANG JianNan |
| author_facet | WANG Xuan ZHANG JieXi HUANG JianNan |
| author_sort | WANG Xuan |
| collection | DOAJ |
| description | It is very important to determine the reasonable shutdown stress of air-conditioning piping,and it is related to the piping reliability and development cost. Firstly,the piping shutdown stress was studied through a large number of stress tests and statistical analysis methods. Then the piping shutdown fatigue life was calculated based on the force number and S-N fatigue life curve. Finally,the fatigue acceleration tests of pipe fitting under single part and complete machine assembly are carried out respectively. The results show that: The piping will be subjected to 2 ～ 3 stress shocks at the shutdown moment,the average number of shocks is 2. 6 times; The first impact stress is the largest,and the subsequent impact stress attenuates slightly;Vibration table and counterweight block can be used to generate stable stress impact,which can reach millions of times in a short time,and the component fatigue can be verified quickly; Piping bending will reduce the piping fatigue life,the operating pressure and temperature have little influence on pipe fatigue life,welding has little influence on piping,since there is a distance between the welded part and the bent part; In order to ensure the piping reliability under the limit state,the piping shutdown stress should be below 62 MPa. |
| format | Article |
| id | doaj-art-930db4e88d0a4d3b9b64ccc9dc4e4c0c |
| institution | Kabale University |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2021-01-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-930db4e88d0a4d3b9b64ccc9dc4e4c0c2025-01-15T02:25:26ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692021-01-01431250125530611910RESEARCH ON SHUTDOWN STRESS AND FATIGUE LIFE OF AIR CONDITIONING PIPINGWANG XuanZHANG JieXiHUANG JianNanIt is very important to determine the reasonable shutdown stress of air-conditioning piping,and it is related to the piping reliability and development cost. Firstly,the piping shutdown stress was studied through a large number of stress tests and statistical analysis methods. Then the piping shutdown fatigue life was calculated based on the force number and S-N fatigue life curve. Finally,the fatigue acceleration tests of pipe fitting under single part and complete machine assembly are carried out respectively. The results show that: The piping will be subjected to 2 ～ 3 stress shocks at the shutdown moment,the average number of shocks is 2. 6 times; The first impact stress is the largest,and the subsequent impact stress attenuates slightly;Vibration table and counterweight block can be used to generate stable stress impact,which can reach millions of times in a short time,and the component fatigue can be verified quickly; Piping bending will reduce the piping fatigue life,the operating pressure and temperature have little influence on pipe fatigue life,welding has little influence on piping,since there is a distance between the welded part and the bent part; In order to ensure the piping reliability under the limit state,the piping shutdown stress should be below 62 MPa.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2021.05.033Air conditioning pipingShutdown stressFatigue lifeLimit value |
| spellingShingle | WANG Xuan ZHANG JieXi HUANG JianNan RESEARCH ON SHUTDOWN STRESS AND FATIGUE LIFE OF AIR CONDITIONING PIPING Jixie qiangdu Air conditioning piping Shutdown stress Fatigue life Limit value |
| title | RESEARCH ON SHUTDOWN STRESS AND FATIGUE LIFE OF AIR CONDITIONING PIPING |
| title_full | RESEARCH ON SHUTDOWN STRESS AND FATIGUE LIFE OF AIR CONDITIONING PIPING |
| title_fullStr | RESEARCH ON SHUTDOWN STRESS AND FATIGUE LIFE OF AIR CONDITIONING PIPING |
| title_full_unstemmed | RESEARCH ON SHUTDOWN STRESS AND FATIGUE LIFE OF AIR CONDITIONING PIPING |
| title_short | RESEARCH ON SHUTDOWN STRESS AND FATIGUE LIFE OF AIR CONDITIONING PIPING |
| title_sort | research on shutdown stress and fatigue life of air conditioning piping |
| topic | Air conditioning piping Shutdown stress Fatigue life Limit value |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2021.05.033 |
| work_keys_str_mv | AT wangxuan researchonshutdownstressandfatiguelifeofairconditioningpiping AT zhangjiexi researchonshutdownstressandfatiguelifeofairconditioningpiping AT huangjiannan researchonshutdownstressandfatiguelifeofairconditioningpiping |