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NUMERICAL SIMULATIONS OF FRICTION-INDUCED NOISE OF AUTOMOTIVE WIPER SYSTEMS
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Marcus Wallenberg Laboratory MWL.
2015 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Automotive parts may be the cause of very annoying friction-induced noise and the source of many customer complaints. Indeed, when a wiper operates on a windshield, vibratory phenomena may appear due to flutter instabilities and may generate squeal noise. As squeal noise generated by wiper system is a random and complex phenomenon, there are only few studies dealing with the wiper noise. The complexity of this phenomenon is due to the cinematic of the movement and to the various environmental parameters which have an influence on the appearance of the noise. This master thesis is a research and development project and presents a numerical simulation methodology used in the aim to reduce and eradicate squeal noise of wiper systems.  In the first part, the finite element model representing a wiper system and the numerical simulation methodology will be presented in detail. In the second part, stability analysis will be carried out in nominal studies and in designs of experiments. Parametric studies will also be achieved to understand the behavior and the influence of each considered input parameters. Two wiper blades, with the same geometry but with different material, will be considered for the different studies. These two wiper blades will be examined to figure out when squeal noises appear.

Place, publisher, year, edition, pages
2015. , 53 p.
Series
TRITA-AVE, ISSN 1651-7660 ; 2015:19
Keyword [en]
Squeal noise, wiper system, numerical simulations, finite element model, mode-coupling, design of experiments, Farmer diagram
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-180252OAI: oai:DiVA.org:kth-180252DiVA: diva2:891965
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Examiners
Available from: 2016-01-08 Created: 2016-01-08 Last updated: 2016-01-08Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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