Prediction of Fatigue Notch Factor for Metallic Materials

被引：0
|
作者：
胡志忠
曹淑珍
机构：
[1] Research Institute for Strength of Metals Xi'an Jiaotong University Xi'an PRC
[2] Department of Power Machinery Engineering Xi'an Jiaotong University Xi'an
来源：
Science in China,SerA. | 1993年 / Ser.A.1993卷 / 04期
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摘要：
<正> The fatigue notch factors （K_f） of metallic materials with high and low notch sensitivities, which have been derived in theory, are K_t1/（1+n） and K_t2/（3+n） respectively. The diagram of K_f vs. K_t is obtained by means of comprehensive analysis of alarge number of data, and the applicable range of the above two Kc relations is given. The calculation results for steel and aluminum alloy agree with the measured values very well.The fatigue limit of smooth specimens are also derived in this paper, i. e. σtheory=（K/E~n）1/（1+n）. The calculation results are σtheory=σcy （cyclic yield strength）.
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页码：477 / 486
页数：10
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