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基于蒙特卡羅法的螺旋錐齒輪接觸疲勞可靠性分析
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    摘要:

    運(yùn)用蒙特卡羅法模擬確定了齒輪接觸疲勞應(yīng)力與強(qiáng)度分布，并對(duì)接觸疲勞可靠度進(jìn)行了模擬，克服了齒輪等重要零部件的小樣本的問(wèn)題。分析可知，齒輪接觸疲勞應(yīng)力服從正態(tài)分布，接觸疲勞強(qiáng)度服從對(duì)數(shù)正態(tài)分布，并且齒輪接觸疲勞的可靠度誤差隨著模擬次數(shù)的增加而逐漸減小。對(duì)影響接觸疲勞可靠性的應(yīng)力隨機(jī)參數(shù)進(jìn)行敏感性分析，結(jié)果表明，應(yīng)力均值對(duì)接觸疲勞可靠度的影響大，應(yīng)力標(biāo)準(zhǔn)差對(duì)接觸疲勞可靠度的影響較小。

    Abstract:

    Monte-Carlo method was applied to simulate the distribution of the contact fatigue stress and the contact fatigue strength of spiral bevel gear, furthermore, reliability was also simulated. The method solved the small sample problem. According to the analysis, the contact fatigue stress of the gear submitted the normal distribution, and the strength of the gear obeyed the lognormal. The reliability error of the contact fatigue was reduced with the increase of the simulation times. Sensitivity analysis has been made on the stress random parameters which probably impacted the contact fatigue reliability of the gear. Results revealed that the affection of mean is remarkable to the reliability of the gear. The standard error is relatively small. 

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郭耀斌,張文明,張國(guó)芬.基于蒙特卡羅法的螺旋錐齒輪接觸疲勞可靠性分析[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2008,39(4):157-159.[J]. Transactions of the Chinese Society for Agricultural Machinery,2008,39(4):157-159.

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