CONTACT STRENGTH ANALYSIS OF FINGER SEAL CONSIDERING THERMAL EFFECT
As a flexible high-speed dynamic sealing device,the finger seal has a good application prospect in high-speed sealing parts of aircraft engines and gas turbines. However,Under high-speed and high temperature conditions, friction heat and ambient temperature have a significant impact on contact stren...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of Mechanical Strength
2019-01-01
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| Series: | Jixie qiangdu |
| Subjects: | |
| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2019.02.025 |
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| author | ZHANG YanChao JIAO Dandan WU LuJi ZHAO Rui CUI YaHui RAN BaoChun WANG Wei |
| author_facet | ZHANG YanChao JIAO Dandan WU LuJi ZHAO Rui CUI YaHui RAN BaoChun WANG Wei |
| author_sort | ZHANG YanChao |
| collection | DOAJ |
| description | As a flexible high-speed dynamic sealing device,the finger seal has a good application prospect in high-speed sealing parts of aircraft engines and gas turbines. However,Under high-speed and high temperature conditions, friction heat and ambient temperature have a significant impact on contact strength and sealing performance of the finger seal. So exploring its influence mechanism becomes the key problem of finger seal design. Therefore,based on the actual working conditions,converting the friction heat to the heat flux density boundary condition,considering working temperature,a coupled thermal structural analysis model of the finger seal system is built,and the influence of thermal effect on the contact strength of the finger seal/rotor pair is studied,then it verified by tests. The results show that friction heat has an important influence on the contact strength of the sealing pair at high speed. Under normal temperature conditions,the local temperature of the finger seal rises above 370℃ because of friction effect,and the contact pressure at finger foot/rotor friction pair increases by nearly 10%. Under high temperature conditions,when the thermal effects are considered,local contact pressure is reduced by 90%. The performance test results show that,the maximum error between theoretical and test result is only 16.5% under pressure of 0.4 MPa,while the maximum error reaches 72.8% when thermal effect is not considered,which verified the necessity of thermal effect and the rationality of thermal analysis method. So the study provides an important reference for the design of finger seal under high temperature and high speed conditions. |
| format | Article |
| id | doaj-art-588824f8af494a05ab8514f8b1d1f14b |
| institution | Kabale University |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2019-01-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-588824f8af494a05ab8514f8b1d1f14b2025-01-15T02:30:17ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692019-01-014141341830604360CONTACT STRENGTH ANALYSIS OF FINGER SEAL CONSIDERING THERMAL EFFECTZHANG YanChaoJIAO DandanWU LuJiZHAO RuiCUI YaHuiRAN BaoChunWANG WeiAs a flexible high-speed dynamic sealing device,the finger seal has a good application prospect in high-speed sealing parts of aircraft engines and gas turbines. However,Under high-speed and high temperature conditions, friction heat and ambient temperature have a significant impact on contact strength and sealing performance of the finger seal. So exploring its influence mechanism becomes the key problem of finger seal design. Therefore,based on the actual working conditions,converting the friction heat to the heat flux density boundary condition,considering working temperature,a coupled thermal structural analysis model of the finger seal system is built,and the influence of thermal effect on the contact strength of the finger seal/rotor pair is studied,then it verified by tests. The results show that friction heat has an important influence on the contact strength of the sealing pair at high speed. Under normal temperature conditions,the local temperature of the finger seal rises above 370℃ because of friction effect,and the contact pressure at finger foot/rotor friction pair increases by nearly 10%. Under high temperature conditions,when the thermal effects are considered,local contact pressure is reduced by 90%. The performance test results show that,the maximum error between theoretical and test result is only 16.5% under pressure of 0.4 MPa,while the maximum error reaches 72.8% when thermal effect is not considered,which verified the necessity of thermal effect and the rationality of thermal analysis method. So the study provides an important reference for the design of finger seal under high temperature and high speed conditions.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2019.02.025Finger sealThermal structural couplingFriction heatContact strengthHeat effect |
| spellingShingle | ZHANG YanChao JIAO Dandan WU LuJi ZHAO Rui CUI YaHui RAN BaoChun WANG Wei CONTACT STRENGTH ANALYSIS OF FINGER SEAL CONSIDERING THERMAL EFFECT Jixie qiangdu Finger seal Thermal structural coupling Friction heat Contact strength Heat effect |
| title | CONTACT STRENGTH ANALYSIS OF FINGER SEAL CONSIDERING THERMAL EFFECT |
| title_full | CONTACT STRENGTH ANALYSIS OF FINGER SEAL CONSIDERING THERMAL EFFECT |
| title_fullStr | CONTACT STRENGTH ANALYSIS OF FINGER SEAL CONSIDERING THERMAL EFFECT |
| title_full_unstemmed | CONTACT STRENGTH ANALYSIS OF FINGER SEAL CONSIDERING THERMAL EFFECT |
| title_short | CONTACT STRENGTH ANALYSIS OF FINGER SEAL CONSIDERING THERMAL EFFECT |
| title_sort | contact strength analysis of finger seal considering thermal effect |
| topic | Finger seal Thermal structural coupling Friction heat Contact strength Heat effect |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2019.02.025 |
| work_keys_str_mv | AT zhangyanchao contactstrengthanalysisoffingersealconsideringthermaleffect AT jiaodandan contactstrengthanalysisoffingersealconsideringthermaleffect AT wuluji contactstrengthanalysisoffingersealconsideringthermaleffect AT zhaorui contactstrengthanalysisoffingersealconsideringthermaleffect AT cuiyahui contactstrengthanalysisoffingersealconsideringthermaleffect AT ranbaochun contactstrengthanalysisoffingersealconsideringthermaleffect AT wangwei contactstrengthanalysisoffingersealconsideringthermaleffect |