110 転がり軸受けの軌道面損傷による軸変位が生む振動の解析的議論 : 外輪軌道面における調和関数的変位の増大による影響(セッション3 振動解析・トライボ診断)

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  • 110 Analytical study of vibration caused by axial dispacement from race failure in rolling bearing : Effect from increasing harmonic modulation in outer ring raceway

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We analytically discussed vibration analysis of a rolling bearing with wavy displacement at raceway in an outer ring. Although roughness of the raceway is small harmonic modulation, displacement of the rolling axis becomes periodical intermittent piecewise function. Because of its intermittency, it causes high-order harmonic resonance in rolling machine under far low axial rolling excitation. Resonance amplitude strongly depends on the ratio between curvature radius at contacted race and that of the rolling element. These properties will explain the lack of accuracy in fault diagnosis and rapid increase of vibration at last stage of failure.

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