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Gear Web Design with focus on Powder Metal - Sound characteristics and web design: Sound characteristics  and web design
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.).ORCID iD: 0000-0002-2347-8379
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.).ORCID iD: 0000-0002-2578-9453
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.).
2013 (English)In: International Conference on Gears: Europe invites the world : time and venue: October 7th to 9th, 2013, Technical University of Munich (TUM), Garching (near Munich), Germany, VDI Verlag , 2013, Vol. 2, 1199-1208 p.Conference paper (Refereed)
Abstract [en]

The presented work focuses on gear web design using powder metal (PM) by utilizing the finite element method (FEM) to reduce weight and inertia taking into account root bending strength and tooth deflection.A topological optimization is used to determine feasible candidates for different web designs which have as objective to reduce volume. Similar geometric topologies were shown during different loading conditions; and hence, this topology was chosen as a suitable candidate. This candidate was further developed into a parametric model which incorporated the same overall shape shown in the topological optimization. A shape optimization procedure was used utilizing the parametric model having as state variables root bending strength and tooth deflection; and as objective the decrease in inertia, and in consequence weight, of the gear. To analyze a gear which is thoroughly studied, a similar gear to the FZG C type gear is used.Another aspect studied in this paper is the damping properties of three different gears, wrought, conventional PM and double density. Their damping properties are measured using their reverberation time and their frequency response function.Sound characteristics results show that a significant increase in dampening can be observed in PM gears when compared to conventional wrought gears. Finally results from the shape optimizations show how gears can be designed with PM to reduce weight and inertia, with marginal effects on strength and stiffness.

Place, publisher, year, edition, pages
VDI Verlag , 2013. Vol. 2, 1199-1208 p.
Keyword [en]
gear web, powder metal, stiffness
National Category
Other Mechanical Engineering
Research subject
Machine Design
URN: urn:nbn:se:kth:diva-161352ISBN: 978-3-18-092199-0OAI: diva2:794471
2013 International Conference on Gears 2013, October 7th to 9th, 2013, Germany

QC 20150312

Available from: 2015-03-11 Created: 2015-03-11 Last updated: 2015-03-12Bibliographically approved

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Sosa, MarioBjörklund, StefanSellgren, Ulf
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