A Condition for Complete Flattening of Asperities in a Rough Contact
Considering rough surface profiles in a contact model is of decisive importance. In the up-to-date rough contact models there remained underexplored the opportunity of complete flattening of smaller asperities and therefore the need of using the multilevel roughness models, including fractal ones. I...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2018-01-01
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| Series: | MATEC Web of Conferences |
| Online Access: | https://doi.org/10.1051/matecconf/201822001007 |
| _version_ | 1818733865921937408 |
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| author | Murashov Mikhail V. |
| author_facet | Murashov Mikhail V. |
| author_sort | Murashov Mikhail V. |
| collection | DOAJ |
| description | Considering rough surface profiles in a contact model is of decisive importance. In the up-to-date rough contact models there remained underexplored the opportunity of complete flattening of smaller asperities and therefore the need of using the multilevel roughness models, including fractal ones. If higher level asperities are not flattened completely when pressed, then they will be able to impact on the contact process. This paper considers model problems of elastic-plastic contact with hardening for a body with protrusions and two pyramids as the objects similar to asperities. Modeling results show that asperities are completely flattened only on condition of confined compression. For real contacting rough surfaces under low pressures, complete flattening of asperities will not occur. It is shown that roughness elements on the surface of the asperities do not disappear even at severe deformation of the latter. The reason is a combination of the asperity form and hardening of material, while the consequence is a reduction of the real contact area. |
| first_indexed | 2024-12-17T23:56:16Z |
| format | Article |
| id | doaj.art-0d21650f5494437e8ccb397f9798e89e |
| institution | Directory Open Access Journal |
| issn | 2261-236X |
| language | English |
| last_indexed | 2024-12-17T23:56:16Z |
| publishDate | 2018-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | MATEC Web of Conferences |
| spelling | doaj.art-0d21650f5494437e8ccb397f9798e89e2022-12-21T21:28:03ZengEDP SciencesMATEC Web of Conferences2261-236X2018-01-012200100710.1051/matecconf/201822001007matecconf_icmsc2018_01007A Condition for Complete Flattening of Asperities in a Rough ContactMurashov Mikhail V.0Bauman Moscow State Technical UniversityConsidering rough surface profiles in a contact model is of decisive importance. In the up-to-date rough contact models there remained underexplored the opportunity of complete flattening of smaller asperities and therefore the need of using the multilevel roughness models, including fractal ones. If higher level asperities are not flattened completely when pressed, then they will be able to impact on the contact process. This paper considers model problems of elastic-plastic contact with hardening for a body with protrusions and two pyramids as the objects similar to asperities. Modeling results show that asperities are completely flattened only on condition of confined compression. For real contacting rough surfaces under low pressures, complete flattening of asperities will not occur. It is shown that roughness elements on the surface of the asperities do not disappear even at severe deformation of the latter. The reason is a combination of the asperity form and hardening of material, while the consequence is a reduction of the real contact area.https://doi.org/10.1051/matecconf/201822001007 |
| spellingShingle | Murashov Mikhail V. A Condition for Complete Flattening of Asperities in a Rough Contact MATEC Web of Conferences |
| title | A Condition for Complete Flattening of Asperities in a Rough Contact |
| title_full | A Condition for Complete Flattening of Asperities in a Rough Contact |
| title_fullStr | A Condition for Complete Flattening of Asperities in a Rough Contact |
| title_full_unstemmed | A Condition for Complete Flattening of Asperities in a Rough Contact |
| title_short | A Condition for Complete Flattening of Asperities in a Rough Contact |
| title_sort | condition for complete flattening of asperities in a rough contact |
| url | https://doi.org/10.1051/matecconf/201822001007 |
| work_keys_str_mv | AT murashovmikhailv aconditionforcompleteflatteningofasperitiesinaroughcontact AT murashovmikhailv conditionforcompleteflatteningofasperitiesinaroughcontact |