Simulation of Tribological Contacts in Hydraulic Machines
Axial piston machines are operating at high pressure and varying speeds, which requires high reliability of the components. The machine components are separated by a fluid film, but sometimes this film gets penetrated by the surface asperities causing the machine to operate with metal-to-metal conta...
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Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik
2018
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ftluleatu:oai:DiVA.org:ltu-69049 2023-05-15T17:09:02+02:00 Simulation of Tribological Contacts in Hydraulic Machines Roselin, Fredrik 2018 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-69049 eng eng Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-69049 info:eu-repo/semantics/openAccess Tribology Friction Wear Lubrication Mixed lubrication Luleå Mixed Lubrication Model LMLM Tribologi Friktion Nötning Smörjning Blandad tunnfilmssmörjning Tribology (Interacting Surfaces including Friction Lubrication and Wear) Tribologi (ytteknik omfattande friktion nötning och smörjning) Student thesis info:eu-repo/semantics/bachelorThesis text 2018 ftluleatu 2022-10-25T20:54:19Z Axial piston machines are operating at high pressure and varying speeds, which requires high reliability of the components. The machine components are separated by a fluid film, but sometimes this film gets penetrated by the surface asperities causing the machine to operate with metal-to-metal contact. In order to improve the design and predict the operating conditions might numerical tools be used. The goal with this thesis was to describe how the tribological contacts in Parkers machines can be modelled, considering oil and surface roughness. The so called Luleå Mixed Lubrication Model have therefore been investigated and it has been described how the model can be used in Parkers machines. The model uses a two-scale method to include the influence of real surface topographies of the components, it gives information about how the surface roughness affect the lubrication conditions. Different options of softwares have been investigated and compared to get an understanding of what possibilities and shortcomings they might have when it comes to this kind of simulations. Results show that all interesting contacts can't be treated the same, therefore must each contact be investigated separetly even though the Luleå Mixed Lubrication Model is used in all cases. Bachelor Thesis Luleå Luleå Luleå Luleå University of Technology Publications (DiVA) |
institution |
Open Polar |
collection |
Luleå University of Technology Publications (DiVA) |
op_collection_id |
ftluleatu |
language |
English |
topic |
Tribology Friction Wear Lubrication Mixed lubrication Luleå Mixed Lubrication Model LMLM Tribologi Friktion Nötning Smörjning Blandad tunnfilmssmörjning Tribology (Interacting Surfaces including Friction Lubrication and Wear) Tribologi (ytteknik omfattande friktion nötning och smörjning) |
spellingShingle |
Tribology Friction Wear Lubrication Mixed lubrication Luleå Mixed Lubrication Model LMLM Tribologi Friktion Nötning Smörjning Blandad tunnfilmssmörjning Tribology (Interacting Surfaces including Friction Lubrication and Wear) Tribologi (ytteknik omfattande friktion nötning och smörjning) Roselin, Fredrik Simulation of Tribological Contacts in Hydraulic Machines |
topic_facet |
Tribology Friction Wear Lubrication Mixed lubrication Luleå Mixed Lubrication Model LMLM Tribologi Friktion Nötning Smörjning Blandad tunnfilmssmörjning Tribology (Interacting Surfaces including Friction Lubrication and Wear) Tribologi (ytteknik omfattande friktion nötning och smörjning) |
description |
Axial piston machines are operating at high pressure and varying speeds, which requires high reliability of the components. The machine components are separated by a fluid film, but sometimes this film gets penetrated by the surface asperities causing the machine to operate with metal-to-metal contact. In order to improve the design and predict the operating conditions might numerical tools be used. The goal with this thesis was to describe how the tribological contacts in Parkers machines can be modelled, considering oil and surface roughness. The so called Luleå Mixed Lubrication Model have therefore been investigated and it has been described how the model can be used in Parkers machines. The model uses a two-scale method to include the influence of real surface topographies of the components, it gives information about how the surface roughness affect the lubrication conditions. Different options of softwares have been investigated and compared to get an understanding of what possibilities and shortcomings they might have when it comes to this kind of simulations. Results show that all interesting contacts can't be treated the same, therefore must each contact be investigated separetly even though the Luleå Mixed Lubrication Model is used in all cases. |
format |
Bachelor Thesis |
author |
Roselin, Fredrik |
author_facet |
Roselin, Fredrik |
author_sort |
Roselin, Fredrik |
title |
Simulation of Tribological Contacts in Hydraulic Machines |
title_short |
Simulation of Tribological Contacts in Hydraulic Machines |
title_full |
Simulation of Tribological Contacts in Hydraulic Machines |
title_fullStr |
Simulation of Tribological Contacts in Hydraulic Machines |
title_full_unstemmed |
Simulation of Tribological Contacts in Hydraulic Machines |
title_sort |
simulation of tribological contacts in hydraulic machines |
publisher |
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik |
publishDate |
2018 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-69049 |
genre |
Luleå Luleå Luleå |
genre_facet |
Luleå Luleå Luleå |
op_relation |
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-69049 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766064989747019776 |