Measurement of Contact Pressure Distribution between Spur Gear Teeth using Multi-point Thin-film Sensor
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Abstract
In order to investigate the durability of the sliding surface of machinery, it is important to know the
force acting on such parts and to evaluate its stress distribution. Contact pressure occurring on the surface of gear teeth is an important factor in determining the bending stress on the gear teeth. However, since the contact area of each gear tooth surface is extremely small, a pressure sensor which can measure dynamic pressure cannot be attached. For this reason, the authors developed a thin-film pressure sensor to measure the contact pressure distribution on the gear flank. A thin-film sensor was designed to simultaneously measure contact pressure distribution in the teeth width direction. Improvement in durability could be achieved by the newly developed film structure method of this study. The measured results of pressure distribution in tooth trace direction were in good agreement with the calculations under a torque of 100Nm, in consideration of the shape of the tooth surface and misalignment. As torque increases over 150Nm, measured pressure distribution values gradually increased, and tended to become close to Hertzian pressure.
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References
JGMA6102-02(2009)
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