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Experimental Evaluation of the Stress Distribution on the Outer Surface of the Outer Race of Conventional and Double-Decker High-Precision Bearings

机译:常规和双层高精度轴承外圈外表面应力分布的实验评估

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摘要

Experimental investigations have been carried out on the stress distribution on the outer surface of the outer race of conventional and double-decker high-precision bearings (DDHPBs). The investigations, in general, indicate that the overall level of stress variation on conventional bearings in various modes of loading under static conditions is greater than that of DDHPBs having an identical inner bore. The cyclic stress levels have been found to be higher for the outer race of conventional bearings compared to that of DDHPBs. Also, the frequency of stress cycles on the outer race of conventional bearings is greater than that of DDHPBs. A comparison of the stress distribution pattern indicates that, under identical loads, the ratio of deflection to indentation on the elements of DDHPBs and conventional bearings is less than unity. Also, under identical operating conditions, the ratio of stresses due to centrifugal forces on the elements of DDHPBs and conventional bearings of the same bore and outer diameter is less than unity. It is concluded that the life of DDHPBs as compared to conventional bearings should be longer under identical operating conditions.
机译:对常规和双层高精度轴承(DDHPB)的外圈外表面上的应力分布进行了实验研究。通常,研究表明,在静态条件下,各种载荷模式下常规轴承的应力变化总水平要大于具有相同内孔的DDHPB。已经发现,与DDHPB相比,常规轴承外圈的循环应力水平更高。而且,传统轴承外圈的应力循环频率要比DDHPB大。应力分布模式的比较表明,在相同的载荷下,DDHPB和传统轴承的元件上的挠度与压痕之比小于1。同样,在相同的工作条件下,由于离心力作用于相同孔径和外径的DDHPB和传统轴承上的应力之比小于1。结论是,在相同的工作条件下,与传统轴承相比,DDHPB的寿命应更长。

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