基于三参数威布尔分布的自动调整臂疲劳寿命的P-S-N曲线研究

doi:10.3969/j.issn.1000-1158.2018.02.10

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Abstract An experimental study on the fatigue properties of automatic brake adjuster is presented. The deflection ability,failure characteristics and fatigue life were investigated．It is observed when fatigue stress is applied,middle stress concentration parts of the rectangular compression spring will produce crack. While stress level increases,the crack becomes bigger,which makes its ability to transfer torque reduced. Using the method of least squares and maximum correlation coefficient fitting of the fatigue life of automatic brake adjuster,it was shown that its fatigue life obey the three parameter of Weibull distribution. According to the three parameters in the form of power function S-N curve equation, the automatic brake adjuster under different stress P-S-N curve is setd up. The automatic brake adjuster test was compared with the theoretical fatigue limit life which shown the relative error of the two is small.

Key words： metrology fatigue life P-S-N curve three parameters of Weibull automatic brake adjuster

Received: 31 August 2016 Published: 11 February 2018

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TB93

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	Articles by authors
	LUO Zai
	WANG Lan-jing
	TANG Ying-qi
	TIAN Kun

Cite this article:

LUO Zai,WANG Lan-jing,TANG Ying-qi, et al. Research on the P-S-N Curve of Fatigue Life of Automatic Brake Adjuster Based on Three Parameter Weibull Distribution[J]. Acta Metrologica Sinica, 2018, 39(2): 187-191.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2018.02.10 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2018/V39/I2/187

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