Numerical simulation to surface fatigue crack growth 表面裂紋疲勞擴(kuò)展的數(shù)值模擬
N . shlyannikov , z . b . kuang , f . p . yang ( 2004 ) , surface fatigue crack growth behavior , russian journal power engineering problems 楊鳳鵬,林卓英( 2004 ) ,表面裂紋疲勞擴(kuò)展的試驗,北京科技大學(xué)學(xué)報
Abstract : in this article , the optimization of surface crack detection of speed reducer gear was made using fuzzy set theory , the result show that the rotation magnetic field is the best way of surface crack detection and lots of extending surface fatigue cracks were found in practice 文摘:采用模糊集的貼近度計算對齒輪表面探傷方法進(jìn)行了優(yōu)化選擇,表明旋轉(zhuǎn)磁場探傷是齒輪表面探傷的最佳方法,在實用中檢測出大量的正在延伸擴(kuò)展的表面疲勞裂紋。
The cam - follower is the main mechanism of the engine that carries out a series of accurate motions . its mild wear may gradually worsen the contact conditions . the probability for surface fatigue will then increase due to changes in the surface topography 凸輪?挺柱是內(nèi)燃機(jī)中實現(xiàn)一系列精確動作的主要機(jī)構(gòu),其磨損會使接觸條件惡化,由此產(chǎn)生的表面形貌的變化會使表面疲勞的概率增加,可能會對部件產(chǎn)生破壞性的影響,進(jìn)行凸輪機(jī)構(gòu)的摩擦學(xué)設(shè)計對提高內(nèi)燃機(jī)的運行性能和延長使用壽命十分重要。