Semi-analytical methodology for fretting wear evaluation of unlubricated pitch bearing raceways under operative and non-operative periods
<p>Current methodologies for the evaluation of fretting in pitch bearing raceways only consider damage induced by oscillating control movements. However, pitch bearings can remain static for long operative and non-operative periods, where load fluctuations cause fretting damage due to the smal...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2025-02-01
|
| Series: | Wind Energy Science |
| Online Access: | https://wes.copernicus.org/articles/10/401/2025/wes-10-401-2025.pdf |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832096723893223424 |
|---|---|
| author | D. Cubillas M. Olave I. Llavori I. Ulacia J. Larrañaga A. Zurutuza A. Lopez |
| author_facet | D. Cubillas M. Olave I. Llavori I. Ulacia J. Larrañaga A. Zurutuza A. Lopez |
| author_sort | D. Cubillas |
| collection | DOAJ |
| description | <p>Current methodologies for the evaluation of fretting in pitch bearing raceways only consider damage induced by oscillating control movements. However, pitch bearings can remain static for long operative and non-operative periods, where load fluctuations cause fretting damage due to the small movements and deformations at the contact. In this work a semi-analytical methodology is presented and an analysis of the fretting phenomenon in pitch bearing raceways in the absence of lubricant under both productive and non-productive periods of static pitch control is accomplished. The analysis is performed following the energy-based wear model and the calculation of a total of 30 times series of 10 min of duration concerning winds speeds from 3 to 25 m s<span class="inline-formula"><sup>−1</sup></span>. As a result, critical locations based on the dissipated energy are identified for the different wind speeds and the contributions of operational and non-operational times, as well as the prediction of damage shapes on the raceway for both cases, are evaluated independently and compared.</p> |
| format | Article |
| id | doaj-art-1242225eb39449deb30f7b6f4c20c62d |
| institution | Kabale University |
| issn | 2366-7443 2366-7451 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Wind Energy Science |
| spelling | doaj-art-1242225eb39449deb30f7b6f4c20c62d2025-02-05T11:18:20ZengCopernicus PublicationsWind Energy Science2366-74432366-74512025-02-011040141510.5194/wes-10-401-2025Semi-analytical methodology for fretting wear evaluation of unlubricated pitch bearing raceways under operative and non-operative periodsD. Cubillas0M. Olave1I. Llavori2I. Ulacia3J. Larrañaga4A. Zurutuza5A. Lopez6Ikerlan Technology Research Centre, Basque Research and Technology Alliance (BRTA), P J. M. Arizmendiarrieta 2, 20500 Arrasate / Mondragón, SpainIkerlan Technology Research Centre, Basque Research and Technology Alliance (BRTA), P J. M. Arizmendiarrieta 2, 20500 Arrasate / Mondragón, SpainFaculty of Engineering, Mondragon Unibertsitatea, Loramendi 4, 20500 Arrasate / Mondragón, SpainFaculty of Engineering, Mondragon Unibertsitatea, Loramendi 4, 20500 Arrasate / Mondragón, SpainFaculty of Engineering, Mondragon Unibertsitatea, Loramendi 4, 20500 Arrasate / Mondragón, SpainLaulagun Bearings, Harizti Industrialdea 201-E, 20212 Olaberria, SpainLaulagun Bearings, Harizti Industrialdea 201-E, 20212 Olaberria, Spain<p>Current methodologies for the evaluation of fretting in pitch bearing raceways only consider damage induced by oscillating control movements. However, pitch bearings can remain static for long operative and non-operative periods, where load fluctuations cause fretting damage due to the small movements and deformations at the contact. In this work a semi-analytical methodology is presented and an analysis of the fretting phenomenon in pitch bearing raceways in the absence of lubricant under both productive and non-productive periods of static pitch control is accomplished. The analysis is performed following the energy-based wear model and the calculation of a total of 30 times series of 10 min of duration concerning winds speeds from 3 to 25 m s<span class="inline-formula"><sup>−1</sup></span>. As a result, critical locations based on the dissipated energy are identified for the different wind speeds and the contributions of operational and non-operational times, as well as the prediction of damage shapes on the raceway for both cases, are evaluated independently and compared.</p>https://wes.copernicus.org/articles/10/401/2025/wes-10-401-2025.pdf |
| spellingShingle | D. Cubillas M. Olave I. Llavori I. Ulacia J. Larrañaga A. Zurutuza A. Lopez Semi-analytical methodology for fretting wear evaluation of unlubricated pitch bearing raceways under operative and non-operative periods Wind Energy Science |
| title | Semi-analytical methodology for fretting wear evaluation of unlubricated pitch bearing raceways under operative and non-operative periods |
| title_full | Semi-analytical methodology for fretting wear evaluation of unlubricated pitch bearing raceways under operative and non-operative periods |
| title_fullStr | Semi-analytical methodology for fretting wear evaluation of unlubricated pitch bearing raceways under operative and non-operative periods |
| title_full_unstemmed | Semi-analytical methodology for fretting wear evaluation of unlubricated pitch bearing raceways under operative and non-operative periods |
| title_short | Semi-analytical methodology for fretting wear evaluation of unlubricated pitch bearing raceways under operative and non-operative periods |
| title_sort | semi analytical methodology for fretting wear evaluation of unlubricated pitch bearing raceways under operative and non operative periods |
| url | https://wes.copernicus.org/articles/10/401/2025/wes-10-401-2025.pdf |
| work_keys_str_mv | AT dcubillas semianalyticalmethodologyforfrettingwearevaluationofunlubricatedpitchbearingracewaysunderoperativeandnonoperativeperiods AT molave semianalyticalmethodologyforfrettingwearevaluationofunlubricatedpitchbearingracewaysunderoperativeandnonoperativeperiods AT illavori semianalyticalmethodologyforfrettingwearevaluationofunlubricatedpitchbearingracewaysunderoperativeandnonoperativeperiods AT iulacia semianalyticalmethodologyforfrettingwearevaluationofunlubricatedpitchbearingracewaysunderoperativeandnonoperativeperiods AT jlarranaga semianalyticalmethodologyforfrettingwearevaluationofunlubricatedpitchbearingracewaysunderoperativeandnonoperativeperiods AT azurutuza semianalyticalmethodologyforfrettingwearevaluationofunlubricatedpitchbearingracewaysunderoperativeandnonoperativeperiods AT alopez semianalyticalmethodologyforfrettingwearevaluationofunlubricatedpitchbearingracewaysunderoperativeandnonoperativeperiods |