| NOVEL STEEL AND ARAMID/PHENOL COMPOSITE GEAR FOR A TRANSMISSION WITH OPTIMUM DESIGN AND FEM VIBRATION ANALYSIS |
| Hyunwoong Kim1, Cheol Kim1, Sanghyeon Kim2, Bongjoon Kim2, Chaehong Lim3 |
1Kyungpook National University
2Kyung Chang Industrial Co.
3Hyundai Motor Company |
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| ABSTRACT |
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Hybrid gears made of steel and fiber-reinforced polymeric composite material are recently attracting electric
vehicle designers’ attention due to their possible advantages such as lightweight and lessened transfer of noise and vibration
for automotive transmissions. Polymeric composite material may be placed in-between the steel teeth and central hub regions
in the radial direction of the gear. The partial usage of polymeric composite material for a gear is expected to reduce the
transmissibility of vibration from teeth to hub as well as the weight of the gear-train. Using the finite element method,
optimization, vibration and noise analyses have been performed in order to calculate SPL (sound pressure level) for pure steel
and hybrid gears, separately. At a specified point of a tooth and a hub, the changes in SPL are computed and are compared
to check how effective the polymeric composite region is. The reduction in SPL of the hybrid gear is observed by comparing
to that of a pure steel gear. To minimize the weight of the hybrid gear, design optimization is applied by considering fatigue
strength of steel and composite material. |
| Key Words:
Composite gear, Noise reduction, Vibration, Car transmission, Kevlar/Phenol composite |
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Corresponding Author.
Cheol Kim , Email. 
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