A Comprehensive Nonlinear Multiaxial Life Prediction Model.
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| Title: | A Comprehensive Nonlinear Multiaxial Life Prediction Model. |
|---|---|
| Authors: | Tian, Zegang1 (AUTHOR), Liu, Yongbao1 (AUTHOR) hexing_mail@163.com, Xia, Ge1 (AUTHOR) liuyongbaoly@163.com, He, Xing1 (AUTHOR) |
| Source: | Materials (1996-1944). Sep2025, Vol. 18 Issue 17, p4185. 18p. |
| Subjects: | Compressor blades, Fatigue life, Nonlinear theories, Crack propagation, Finite element method, Stress concentration |
| Abstract: | Compressor blades are subjected to multiaxial loads during operation. Using uniaxial life prediction formulas to predict their fatigue life can result in significant errors. Therefore, by analyzing the loading conditions of the blades, a fatigue life prediction model suitable for compressor blades was developed. This model was established by applying the load of a specific engine type to a notched bar specimen and considering the gradient and strengthening effects. Firstly, the parameters of the SWT model were used as the damage parameters to determine the critical plane location based on the principle of coordinate transformation, and these results were compared with the actual fracture angles. Additionally, the physical mechanisms of multiaxial fatigue crack initiation and propagation were investigated at the microscopic level. Secondly, the non-uniform stress field on the critical plane was obtained using the finite element method. The stress distribution from the critical point to the specimen's principal axis was extracted and normalized to calculate the equivalent stress gradient factor. Finally, the results of the comprehensive fatigue life prediction model were computed. Comparisons between the calculated results of the proposed model, the SWT model, and the Shang model with the experimental fatigue life showed that the prediction accuracy of the proposed model is higher than that of the SWT model and the Shang Deguang model. [ABSTRACT FROM AUTHOR] |
| Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 187984661 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: A Comprehensive Nonlinear Multiaxial Life Prediction Model. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Tian%2C+Zegang%22">Tian, Zegang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Yongbao%22">Liu, Yongbao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> hexing_mail@163.com</i><br /><searchLink fieldCode="AR" term="%22Xia%2C+Ge%22">Xia, Ge</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> liuyongbaoly@163.com</i><br /><searchLink fieldCode="AR" term="%22He%2C+Xing%22">He, Xing</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Materials+%281996-1944%29%22">Materials (1996-1944)</searchLink>. Sep2025, Vol. 18 Issue 17, p4185. 18p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Compressor+blades%22">Compressor blades</searchLink><br /><searchLink fieldCode="DE" term="%22Fatigue+life%22">Fatigue life</searchLink><br /><searchLink fieldCode="DE" term="%22Nonlinear+theories%22">Nonlinear theories</searchLink><br /><searchLink fieldCode="DE" term="%22Crack+propagation%22">Crack propagation</searchLink><br /><searchLink fieldCode="DE" term="%22Finite+element+method%22">Finite element method</searchLink><br /><searchLink fieldCode="DE" term="%22Stress+concentration%22">Stress concentration</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Compressor blades are subjected to multiaxial loads during operation. Using uniaxial life prediction formulas to predict their fatigue life can result in significant errors. Therefore, by analyzing the loading conditions of the blades, a fatigue life prediction model suitable for compressor blades was developed. This model was established by applying the load of a specific engine type to a notched bar specimen and considering the gradient and strengthening effects. Firstly, the parameters of the SWT model were used as the damage parameters to determine the critical plane location based on the principle of coordinate transformation, and these results were compared with the actual fracture angles. Additionally, the physical mechanisms of multiaxial fatigue crack initiation and propagation were investigated at the microscopic level. Secondly, the non-uniform stress field on the critical plane was obtained using the finite element method. The stress distribution from the critical point to the specimen's principal axis was extracted and normalized to calculate the equivalent stress gradient factor. Finally, the results of the comprehensive fatigue life prediction model were computed. Comparisons between the calculated results of the proposed model, the SWT model, and the Shang model with the experimental fatigue life showed that the prediction accuracy of the proposed model is higher than that of the SWT model and the Shang Deguang model. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/ma18174185 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 18 StartPage: 4185 Subjects: – SubjectFull: Compressor blades Type: general – SubjectFull: Fatigue life Type: general – SubjectFull: Nonlinear theories Type: general – SubjectFull: Crack propagation Type: general – SubjectFull: Finite element method Type: general – SubjectFull: Stress concentration Type: general Titles: – TitleFull: A Comprehensive Nonlinear Multiaxial Life Prediction Model. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Tian, Zegang – PersonEntity: Name: NameFull: Liu, Yongbao – PersonEntity: Name: NameFull: Xia, Ge – PersonEntity: Name: NameFull: He, Xing IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 09 Text: Sep2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 19961944 Numbering: – Type: volume Value: 18 – Type: issue Value: 17 Titles: – TitleFull: Materials (1996-1944) Type: main |
| ResultId | 1 |
