Research on the Calculation Method for the Contact Stress of Wind Turbine Main Shaft Bearings Based on Finite Element Analysis
Under alternating loads, the contact situation for self-aligning roller bearings in the main shaft of a wind turbine is complex. Few methodologies exist for calculating the contact stress of main shaft bearings. We propose a method for calculating the contact stress of main shaft bearings in wind tu...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-05-01
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| Series: | Lubricants |
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| Online Access: | https://www.mdpi.com/2075-4442/13/5/226 |
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| author | Yi Zou Wenlei Sun Hongwei Wang Tiantian Xu Bingkai Wang |
| author_facet | Yi Zou Wenlei Sun Hongwei Wang Tiantian Xu Bingkai Wang |
| author_sort | Yi Zou |
| collection | DOAJ |
| description | Under alternating loads, the contact situation for self-aligning roller bearings in the main shaft of a wind turbine is complex. Few methodologies exist for calculating the contact stress of main shaft bearings. We propose a method for calculating the contact stress of main shaft bearings in wind turbines; by simulating alternating loads that affect the turbine’s lifespan with a probability of 99%, analyzing the operational characteristics of the bearings under these loads using the roller slice method, and establishing a load–displacement model, this model serves as the boundary condition for contact stress simulation. We present the approach for building a three-dimensional finite element simulation model of contact stress, followed by model validation. The findings reveal that the maximum stress within the spindle bearing is concentrated in the contact zone, taking on an elliptical configuration. The maximum contact stress, as computed by the proposed method, amounts to 1356.3 MPa, and the bearing’s load-bearing performance adequately fulfills the design requirements. A comparative analysis with the calculation results documented in the existing literature shows that the average discrepancies in the computed outcomes for the roller’s contact with the inner and outer rings are 2.55% and 2.48%, respectively, and this validates the high reliability of the proposed approach. The research conducted in this thesis can further enhance the credibility of the contact stress calculation method for large-scale wind turbine spindle bearings. |
| format | Article |
| id | doaj-art-eccf8a3a1cbd474f8fa6331e85266fb1 |
| institution | OA Journals |
| issn | 2075-4442 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Lubricants |
| spelling | doaj-art-eccf8a3a1cbd474f8fa6331e85266fb12025-08-20T02:33:54ZengMDPI AGLubricants2075-44422025-05-0113522610.3390/lubricants13050226Research on the Calculation Method for the Contact Stress of Wind Turbine Main Shaft Bearings Based on Finite Element AnalysisYi Zou0Wenlei Sun1Hongwei Wang2Tiantian Xu3Bingkai Wang4School of Mechanical Engineering, Xinjiang University, Urumqi 830047, ChinaSchool of Mechanical Engineering, Xinjiang University, Urumqi 830047, ChinaSchool of Mechanical Engineering, Xinjiang University, Urumqi 830047, ChinaSchool of Mechanical Engineering, Xinjiang University, Urumqi 830047, ChinaSchool of Mechanical Engineering, Xinjiang University, Urumqi 830047, ChinaUnder alternating loads, the contact situation for self-aligning roller bearings in the main shaft of a wind turbine is complex. Few methodologies exist for calculating the contact stress of main shaft bearings. We propose a method for calculating the contact stress of main shaft bearings in wind turbines; by simulating alternating loads that affect the turbine’s lifespan with a probability of 99%, analyzing the operational characteristics of the bearings under these loads using the roller slice method, and establishing a load–displacement model, this model serves as the boundary condition for contact stress simulation. We present the approach for building a three-dimensional finite element simulation model of contact stress, followed by model validation. The findings reveal that the maximum stress within the spindle bearing is concentrated in the contact zone, taking on an elliptical configuration. The maximum contact stress, as computed by the proposed method, amounts to 1356.3 MPa, and the bearing’s load-bearing performance adequately fulfills the design requirements. A comparative analysis with the calculation results documented in the existing literature shows that the average discrepancies in the computed outcomes for the roller’s contact with the inner and outer rings are 2.55% and 2.48%, respectively, and this validates the high reliability of the proposed approach. The research conducted in this thesis can further enhance the credibility of the contact stress calculation method for large-scale wind turbine spindle bearings.https://www.mdpi.com/2075-4442/13/5/226contact stresswind turbinemain shaft bearingfinite elementalternating loadload–displacement |
| spellingShingle | Yi Zou Wenlei Sun Hongwei Wang Tiantian Xu Bingkai Wang Research on the Calculation Method for the Contact Stress of Wind Turbine Main Shaft Bearings Based on Finite Element Analysis Lubricants contact stress wind turbine main shaft bearing finite element alternating load load–displacement |
| title | Research on the Calculation Method for the Contact Stress of Wind Turbine Main Shaft Bearings Based on Finite Element Analysis |
| title_full | Research on the Calculation Method for the Contact Stress of Wind Turbine Main Shaft Bearings Based on Finite Element Analysis |
| title_fullStr | Research on the Calculation Method for the Contact Stress of Wind Turbine Main Shaft Bearings Based on Finite Element Analysis |
| title_full_unstemmed | Research on the Calculation Method for the Contact Stress of Wind Turbine Main Shaft Bearings Based on Finite Element Analysis |
| title_short | Research on the Calculation Method for the Contact Stress of Wind Turbine Main Shaft Bearings Based on Finite Element Analysis |
| title_sort | research on the calculation method for the contact stress of wind turbine main shaft bearings based on finite element analysis |
| topic | contact stress wind turbine main shaft bearing finite element alternating load load–displacement |
| url | https://www.mdpi.com/2075-4442/13/5/226 |
| work_keys_str_mv | AT yizou researchonthecalculationmethodforthecontactstressofwindturbinemainshaftbearingsbasedonfiniteelementanalysis AT wenleisun researchonthecalculationmethodforthecontactstressofwindturbinemainshaftbearingsbasedonfiniteelementanalysis AT hongweiwang researchonthecalculationmethodforthecontactstressofwindturbinemainshaftbearingsbasedonfiniteelementanalysis AT tiantianxu researchonthecalculationmethodforthecontactstressofwindturbinemainshaftbearingsbasedonfiniteelementanalysis AT bingkaiwang researchonthecalculationmethodforthecontactstressofwindturbinemainshaftbearingsbasedonfiniteelementanalysis |