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FEM Simulations of gear surface densification
2003 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

When producing gears of metal powder a certain amount of porosity always occurs. The pores reduce the mechanical properties of the gear as for example the fatigue strength. The pore density can be locally decreased by a surface rolling process to achieve better mechanical properties in a thin stripe close to the gear surface. One such process is performed by Höganäs and this process is the one that will be presented, simulated and analysed in this report using the finite element program ABAQUS. Some details of the process performed by Höganäs is given such as the forces and the angular velocity of the surface rolling tools ( the tools are also gears ). The blank profile is specified with a set of discrete points measured by Höganäs before and after their surface rolling process. This is the prerequisite to make an accurate quantitative comparison of the simulated result. No such comparison will be presented in this report, but the definition of a simulation model that is likely to make it possible, is outlined in the conclusion and discussion section. A photo showing the porosity of the blank is also available and will be qualitative compared with the porosity that the simulation gives. In some areas there is a good agreement in this sense.

Place, publisher, year, edition, pages
2003.
Keyword [en]
Technology, FEM, gear, simulation, ABAQUS, surface, densification
Keyword [sv]
Teknik
Identifiers
URN: urn:nbn:se:ltu:diva-46529ISRN: LTU-EX--03/037--SELocal ID: 4283f4ae-9dbb-4d15-a6dd-12851fd70170OAI: oai:DiVA.org:ltu-46529DiVA, id: diva2:1019844
Subject / course
Student thesis, at least 30 credits
Educational program
Engineering Physics, master's level
Examiners
Note
Validerat; 20101217 (root)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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Citation style
  • apa
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  • vancouver
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  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
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Output format
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  • text
  • asciidoc
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