In the present work, an attempt has been made to obtain the vibration response with relative amplitudes of the spectral components for a rolling element bearing with localized defect on different elements under the action of harmonic radial load. The bearing has been assumed as a multi-degree-of-freedom system, and the frequency of harmonic load has been considered to be the shaft frequency. The vibration spectra have been obtained using envelope detection technique. The modulating effects of the harmonic load has resulted in additional sidebands at shaft frequency about the components which are otherwise caused by static load for defects on the outer race and the rolling element. For inner race defect, no additional components exist because the modulating frequency is equal to the shaft frequency at which the sidebands appear even for the static load. A detailed experimental investigation has also been carried out in the present work to validate the theoretical results. The results of theoretical and experimental investigations show the amplitudes of spectral components for both the studies are of the same order and their normalized values have fair agreement between them.

在目前的工作中，已经尝试在谐波径向载荷的作用下获得具有在不同元件上局部缺陷的滚动元件的频谱分量的相对振幅的振动响应。轴承被假定为多自由度系统，谐波负载的频率被认为是轴的频率。使用包络线检测技术获得了振动光谱。谐波负载的调制效应导致在组件周围的轴频率处产生了额外的边带，否则这些边带可能是由于静载荷而导致的外圈和滚动元件上的缺陷。对于内胎缺陷，因为调制频率等于轴带的频率，即使对于静态负载，也出现了边带，因此不存在其他组件。在目前的工作中还进行了详细的实验研究，以验证理论结果。理论和实验研究的结果表明，这两项研究的频谱分量幅度均处于同一阶数，并且其归一化值在两者之间具有合理的一致性。