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Investigation of residual stresses generation in aluminum flywheel
Jönköping University, School of Engineering, JTH. Research area Computer Supported Engineering Design. Jönköping University, School of Engineering, JTH, Mechanical Engineering. (Afsaridis Kimon)
2009 (English)Independent thesis Advanced level (degree of Master (Two Years)), 30 credits / 45 HE creditsStudent thesisAlternative title
Investigation of residual stresses by using both simulations(MAGMAsoft) and pysical measurements(Hole Drilling Method) (English)
Abstract [en]

Quality of the castings is affected by several factors which the designer should take into consideration during the product development process. Although residual stress is one of those, it is often not considered in practical computations. Hence residual stresses are one of the forgotten areas in designing of machine parts. This master thesis is focused on the investigation of residual stresses in a high pressure die casted component, with the aim of extending its service life, by taking results from the study as a feedback.

The investigation of residual stresses was done on a variety of specimens, cast aluminum flywheel, provided by Husqvarna AB. This flywheel is a component in a product of the same company.In evaluating the residual stresses in the part, two tools-simulation and physical measurement were used. Moreover, comparison with these two methods is also done at an area of interest on the flywheel. The simulation was carried out by using MAGMAhpdc-a module for high pressure die casting process, from the commercial software package MAGMAsoft; while for the physical measurements, the hole drilling method was used, a method believed to be less accurate at low stresses areas.

The findings obtained from this study show that the results from both procedures are close, with small deviations observed, which reveals the reliability of the hole drilling method even when the stress levels are low. It is also found that the compressive residual stresses dominate in the component-a preferred phenomenon with regards to residual stress.

Place, publisher, year, edition, pages
2009. , p. 85
Series
JTH Working Reports
Keywords [en]
High Pressure Die Casting, Residual Stresses, Hole Drilling Method, Aluminium flywheel, Compressive stresses, Tensile stresses, Distortion, Convergence, Feeding
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:hj:diva-9255OAI: oai:DiVA.org:hj-9255DiVA, id: diva2:220634
Presentation
(English)
Uppsok
Technology
Supervisors
Available from: 2010-06-18 Created: 2009-06-01 Last updated: 2010-06-18Bibliographically approved

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CiteExportLink to record
Permanent link

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Citation style
  • apa
  • harvard1
  • ieee
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  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
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  • Other locale
More languages
Output format
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