軸受用鋼の壓壞試驗に對する材料力學的考察

概要

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The crushing test is defined by the Army and Navy Aeronautical Standard Specifications and the Japan Bearing Makers Association Standard Specification, as a strength specification for the use of high carbon and high-chromium bearing steel (イ 501) for the outer and inner bearing races. The present test requires that a ring-form specimen of a certain dimension is crushed and the maximum crushing strength should be more than 4000 kg. However, as the method of calculating the stress is not indicated in the aforementioned specification, specimens outside the specified dimensions are not qualified to be used. Recently it becomes customary that ingots are first made into steel tubing, from which the outer and inner races for bear ing manufactured. Hence, it becomes necessary to know the required strength in case of the irre gular specimen outside the specified dimensions. Therefore, the author made a mechanical consideration on the crushing test from standpoint of the elasticity theory, and since a prospect of application of calculating formulae has been obtained from the elasticity theory, he derived the required equations which in turn proved to be practical by experiment.
社団法人日本鉄鋼協会の論文
1943-08-25