铸造技术2018，Vol.39Issue(1)：206-209,213,5.DOI:10.16410/j.issn1000-8365.2018.01.055
基于AlSi7Mg0.3铸造铝合金裂纹扩展预测箱体疲劳评估修正算法
Gearbox Fatigue Assessment Correction Algorithm Based on AlSi7Mg0.3 Casting Aluminum Crack Propagation Prediction
摘要
Abstract
The of high-speed EMU single reduction gearbox for example (material A1Si7Mg0.3) to analyze the gearbox crack propagation prediction algorithm,the key parameter of crack propagation was deduced,as well as a large amount of experimental researches for gearbox strength had been done,according to results of calculation and experiment,the correction coefficient had been introduced based on FKM and EN1999 standard,the evaluation method for gearbox fatigue had also been corrected,the fatigue limit recommended value of casting aluminum alloy gearbox for different casting porosity requirements had puts forwarded,as well as numerical examples had been listed.The results show that for casting aluminum alloy AlSi7Mg0.3 gearbox of high-speed EMU,casting stomatal diameter shall not exceed 0.5 mm,corresponding the stress amplitude of fatigue load should not exceed 35.6 MPa,when the minimum safety factor greater than 1.2,the allowable stress shall not exceed 29.7 MPa.关键词
铝合金/箱体/裂纹扩展/疲劳评估Key words
aluminium alloy/gearbox/crack propagation/fatigue assessment分类
矿业与冶金引用本文复制引用
王兴宇,李国栋,崔大兵..基于AlSi7Mg0.3铸造铝合金裂纹扩展预测箱体疲劳评估修正算法[J].铸造技术,2018,39(1):206-209,213,5.基金项目
中国中车2017年科技研究重点项目-高速动车组转向架结构模态匹配与振动传递技术研究(编号:2017CDB040) （编号:2017CDB040）
