Nonproportional Intentionally Mistuned Turbine Blisk Design with Improved Component Modal Synthesis
An improved component modal synthesis-based nonproportional mistuning method (ICMS-NPMM) is proposed to investigate mistuned turbine blisks (MTBs) since the high-fidelity finite element models (HFEMs) involve large number of computations, which leads to low calculation efficiency. To reduce degrees...
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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/10.1155/2021/6658694 |
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| author | Bin Bai Qi Yang Guang Wei Zhu Qi Liang Wu Xin ye Li |
| author_facet | Bin Bai Qi Yang Guang Wei Zhu Qi Liang Wu Xin ye Li |
| author_sort | Bin Bai |
| collection | DOAJ |
| description | An improved component modal synthesis-based nonproportional mistuning method (ICMS-NPMM) is proposed to investigate mistuned turbine blisks (MTBs) since the high-fidelity finite element models (HFEMs) involve large number of computations, which leads to low calculation efficiency. To reduce degrees of freedom and suppress the flutter of MTB, it is divided into mistuned blade structure and tuned disk structure, and the intentional mistuning is considered. Furthermore, the mistuned parameters, nonproportional mistuning, and complex loads are also considered. Firstly, the basic theory of ICMS-NPMM is investigated; secondly, the model of MTB is established via ICMS-NPMM; finally, the intentionally mistuned design of modal shape amplitudes (MSAs) is investigated via ICMS-NPMM. The results indicate that the calculation efficiency is enhanced via ICMS-NPMM relative to that of via HFEM. In addition, the sensitivity and the flutter are decreased; meanwhile, the amplitude fluctuations of MSAs are distinctly decreased and become comparatively smooth. This investigation provides an important guidance for the vibration characteristic study of complex mechanical structures in engineering practice. |
| format | Article |
| id | doaj-art-44bf892e5fec46c18c8ca055cbd6cb98 |
| institution | OA Journals |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-44bf892e5fec46c18c8ca055cbd6cb982025-08-20T02:37:47ZengWileyShock and Vibration1070-96221875-92032021-01-01202110.1155/2021/66586946658694Nonproportional Intentionally Mistuned Turbine Blisk Design with Improved Component Modal SynthesisBin Bai0Qi Yang1Guang Wei Zhu2Qi Liang Wu3Xin ye Li4State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin 300401, ChinaState Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin 300401, ChinaState Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin 300401, ChinaSchool of Electrical Engineering and Automation, Tiangong University, Tianjin 300387, ChinaSchool of Mechanical Engineering, Hebei University of Technology, Tianjin 300401, ChinaAn improved component modal synthesis-based nonproportional mistuning method (ICMS-NPMM) is proposed to investigate mistuned turbine blisks (MTBs) since the high-fidelity finite element models (HFEMs) involve large number of computations, which leads to low calculation efficiency. To reduce degrees of freedom and suppress the flutter of MTB, it is divided into mistuned blade structure and tuned disk structure, and the intentional mistuning is considered. Furthermore, the mistuned parameters, nonproportional mistuning, and complex loads are also considered. Firstly, the basic theory of ICMS-NPMM is investigated; secondly, the model of MTB is established via ICMS-NPMM; finally, the intentionally mistuned design of modal shape amplitudes (MSAs) is investigated via ICMS-NPMM. The results indicate that the calculation efficiency is enhanced via ICMS-NPMM relative to that of via HFEM. In addition, the sensitivity and the flutter are decreased; meanwhile, the amplitude fluctuations of MSAs are distinctly decreased and become comparatively smooth. This investigation provides an important guidance for the vibration characteristic study of complex mechanical structures in engineering practice.http://dx.doi.org/10.1155/2021/6658694 |
| spellingShingle | Bin Bai Qi Yang Guang Wei Zhu Qi Liang Wu Xin ye Li Nonproportional Intentionally Mistuned Turbine Blisk Design with Improved Component Modal Synthesis Shock and Vibration |
| title | Nonproportional Intentionally Mistuned Turbine Blisk Design with Improved Component Modal Synthesis |
| title_full | Nonproportional Intentionally Mistuned Turbine Blisk Design with Improved Component Modal Synthesis |
| title_fullStr | Nonproportional Intentionally Mistuned Turbine Blisk Design with Improved Component Modal Synthesis |
| title_full_unstemmed | Nonproportional Intentionally Mistuned Turbine Blisk Design with Improved Component Modal Synthesis |
| title_short | Nonproportional Intentionally Mistuned Turbine Blisk Design with Improved Component Modal Synthesis |
| title_sort | nonproportional intentionally mistuned turbine blisk design with improved component modal synthesis |
| url | http://dx.doi.org/10.1155/2021/6658694 |
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