NONLINEAR VIBRATION CHARACTERISTICS OF A CANTILEVER BEAM WITH A BREATHING CRACK BASED ON VIBRATION POWER FLOW
Crack is one common damage in key cantilever beam structures and early crack identification is much significant for increasing safety and reducing accidents. However, classical methods based on displacements are less sensitive to small cracks. By introducing the concept of vibration power flow analy...
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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 |
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| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2019.03.010 |
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| _version_ | 1841535617171718144 |
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| author | WAN Wen LI GuangBu |
| author_facet | WAN Wen LI GuangBu |
| author_sort | WAN Wen |
| collection | DOAJ |
| description | Crack is one common damage in key cantilever beam structures and early crack identification is much significant for increasing safety and reducing accidents. However, classical methods based on displacements are less sensitive to small cracks. By introducing the concept of vibration power flow analysis, a vibration power flow model of a cantilever beam with a breathing crack is proposed in this paper. Then the simulations are performed to explore the effects of the depth and location of the crack on instantaneous dissipated and input powers, and sub-/sup-harmonic responses due to small crack are observed. The results demonstrate that the proposed method is much sensitive to small cracks than classical methods and provides a new way of detecting early cracks. |
| format | Article |
| id | doaj-art-4df2e4494ff443bfbb514f79aaf6dc33 |
| 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-4df2e4494ff443bfbb514f79aaf6dc332025-01-15T02:29:49ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692019-01-014156256730604690NONLINEAR VIBRATION CHARACTERISTICS OF A CANTILEVER BEAM WITH A BREATHING CRACK BASED ON VIBRATION POWER FLOWWAN WenLI GuangBuCrack is one common damage in key cantilever beam structures and early crack identification is much significant for increasing safety and reducing accidents. However, classical methods based on displacements are less sensitive to small cracks. By introducing the concept of vibration power flow analysis, a vibration power flow model of a cantilever beam with a breathing crack is proposed in this paper. Then the simulations are performed to explore the effects of the depth and location of the crack on instantaneous dissipated and input powers, and sub-/sup-harmonic responses due to small crack are observed. The results demonstrate that the proposed method is much sensitive to small cracks than classical methods and provides a new way of detecting early cracks.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2019.03.010Breathing crackCantilever beamVibrational power flowNonlinear vibrations |
| spellingShingle | WAN Wen LI GuangBu NONLINEAR VIBRATION CHARACTERISTICS OF A CANTILEVER BEAM WITH A BREATHING CRACK BASED ON VIBRATION POWER FLOW Jixie qiangdu Breathing crack Cantilever beam Vibrational power flow Nonlinear vibrations |
| title | NONLINEAR VIBRATION CHARACTERISTICS OF A CANTILEVER BEAM WITH A BREATHING CRACK BASED ON VIBRATION POWER FLOW |
| title_full | NONLINEAR VIBRATION CHARACTERISTICS OF A CANTILEVER BEAM WITH A BREATHING CRACK BASED ON VIBRATION POWER FLOW |
| title_fullStr | NONLINEAR VIBRATION CHARACTERISTICS OF A CANTILEVER BEAM WITH A BREATHING CRACK BASED ON VIBRATION POWER FLOW |
| title_full_unstemmed | NONLINEAR VIBRATION CHARACTERISTICS OF A CANTILEVER BEAM WITH A BREATHING CRACK BASED ON VIBRATION POWER FLOW |
| title_short | NONLINEAR VIBRATION CHARACTERISTICS OF A CANTILEVER BEAM WITH A BREATHING CRACK BASED ON VIBRATION POWER FLOW |
| title_sort | nonlinear vibration characteristics of a cantilever beam with a breathing crack based on vibration power flow |
| topic | Breathing crack Cantilever beam Vibrational power flow Nonlinear vibrations |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2019.03.010 |
| work_keys_str_mv | AT wanwen nonlinearvibrationcharacteristicsofacantileverbeamwithabreathingcrackbasedonvibrationpowerflow AT liguangbu nonlinearvibrationcharacteristicsofacantileverbeamwithabreathingcrackbasedonvibrationpowerflow |