A Stress-State-Dependent Thermo-Mechanical Wear Model for Micro-Scale Contacts
Wear is a complex phenomenon that depends on the properties of materials and their surfaces, as well as the operating conditions and the surrounding atmosphere. At the micro-scale, abrasive wear occurs as material removal due to plastic deformation and fracture. In the present work, it is shown that...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-09-01
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| Series: | Lubricants |
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| Online Access: | https://www.mdpi.com/2075-4442/10/9/223 |
| _version_ | 1797485634595586048 |
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| author | Jamal Choudhry Roland Larsson Andreas Almqvist |
| author_facet | Jamal Choudhry Roland Larsson Andreas Almqvist |
| author_sort | Jamal Choudhry |
| collection | DOAJ |
| description | Wear is a complex phenomenon that depends on the properties of materials and their surfaces, as well as the operating conditions and the surrounding atmosphere. At the micro-scale, abrasive wear occurs as material removal due to plastic deformation and fracture. In the present work, it is shown that fracture is stress-state-dependent and thus should be accounted for when modelling wear. For this reason, a three-dimensional finite element model has been adopted to simulate and study the main mechanisms that lead to wear of colliding asperities for a pair of metals. The model is also fully coupled with a non-linear thermal solver to account for thermal effects such as conversion of plastic work to heat as well as thermal expansion. It is shown that both the wear and flash temperature development are dependent on the stress triaxiality and the Lode parameter. |
| first_indexed | 2024-03-09T23:21:34Z |
| format | Article |
| id | doaj.art-90cae6d3004b4ad0af3ddb92d1acb60c |
| institution | Directory Open Access Journal |
| issn | 2075-4442 |
| language | English |
| last_indexed | 2024-03-09T23:21:34Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Lubricants |
| spelling | doaj.art-90cae6d3004b4ad0af3ddb92d1acb60c2023-11-23T17:25:35ZengMDPI AGLubricants2075-44422022-09-0110922310.3390/lubricants10090223A Stress-State-Dependent Thermo-Mechanical Wear Model for Micro-Scale ContactsJamal Choudhry0Roland Larsson1Andreas Almqvist2Division of Machine Elements, Luleå University of Technology, 97187 Luleå, SwedenDivision of Machine Elements, Luleå University of Technology, 97187 Luleå, SwedenDivision of Machine Elements, Luleå University of Technology, 97187 Luleå, SwedenWear is a complex phenomenon that depends on the properties of materials and their surfaces, as well as the operating conditions and the surrounding atmosphere. At the micro-scale, abrasive wear occurs as material removal due to plastic deformation and fracture. In the present work, it is shown that fracture is stress-state-dependent and thus should be accounted for when modelling wear. For this reason, a three-dimensional finite element model has been adopted to simulate and study the main mechanisms that lead to wear of colliding asperities for a pair of metals. The model is also fully coupled with a non-linear thermal solver to account for thermal effects such as conversion of plastic work to heat as well as thermal expansion. It is shown that both the wear and flash temperature development are dependent on the stress triaxiality and the Lode parameter.https://www.mdpi.com/2075-4442/10/9/223finite element methodflash temperaturewear |
| spellingShingle | Jamal Choudhry Roland Larsson Andreas Almqvist A Stress-State-Dependent Thermo-Mechanical Wear Model for Micro-Scale Contacts Lubricants finite element method flash temperature wear |
| title | A Stress-State-Dependent Thermo-Mechanical Wear Model for Micro-Scale Contacts |
| title_full | A Stress-State-Dependent Thermo-Mechanical Wear Model for Micro-Scale Contacts |
| title_fullStr | A Stress-State-Dependent Thermo-Mechanical Wear Model for Micro-Scale Contacts |
| title_full_unstemmed | A Stress-State-Dependent Thermo-Mechanical Wear Model for Micro-Scale Contacts |
| title_short | A Stress-State-Dependent Thermo-Mechanical Wear Model for Micro-Scale Contacts |
| title_sort | stress state dependent thermo mechanical wear model for micro scale contacts |
| topic | finite element method flash temperature wear |
| url | https://www.mdpi.com/2075-4442/10/9/223 |
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