Vibration measurements on a car transmission housing

Wolfram Weber; Marco Plieske; Gerhard Brauchle

doi:10.1117/12.185309

8 September 1994 Vibration measurements on a car transmission housing

Wolfram Weber, Marco Plieske, Gerhard Brauchle

Proceedings Volume 2358, First International Conference on Vibration Measurements by Laser Techniques: Advances and Applications; (1994) https://doi.org/10.1117/12.185309
Event: Vibration Measurements by Laser Techniques: First International Conference, 1994, Ancona, Italy

Abstract

In view of stricter future statutory requirements concerning noise emissions by motor vehicles, the acoustic optimization of noise emitting components will become increasingly important. Customers complain about transmission noise when for example gears excite individual resonances (eigenfrequencies) of the transmission housing. Normally the eigenfrequencies and also the excitation frequencies are not moveable out of narrow limits. Therefore, in addition to optimizing gear geometry, the transmission housing must be designed so that dynamic forces acting through the gears onto the shaft bearing points lead to minimum level of radiated sound power from the transmission housing. For this reason, the resonance vibration shapes induced on a car transmission under operating conditions were measured using the laser-transmission test rig. Additionally, a comparison was made between the inspection of an empty transmission housing (using finite element calculation and experimental modal analysis).

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Wolfram Weber, Marco Plieske, and Gerhard Brauchle "Vibration measurements on a car transmission housing", Proc. SPIE 2358, First International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (8 September 1994); https://doi.org/10.1117/12.185309

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