摘要
针对利用金属薄壁结构轴向切削过程吸收能量的吸能装置,采用多元线性回归分析的方法,建立了吸能装置切削吸能过程的界面力稳定值、能量预测模型。采用方差分析的方法对该模型的回归方程和系数进行了显著性检验。研究了刀具前角、切屑圆心角、切削深度和切削速度对切削式吸能过程的影响程度。研究结果表明,预测模型的回归方程是显著的,刀具前角和切屑圆心角对界面力稳定值的影响显著,切削深度和切削速度对界面力稳定值的影响不显著;刀具前角、切屑圆心角和切削深度对吸能的影响显著,切削速度对吸能的影响不显著。
In view of using axial cutting process of metal thin--walled structure as energy--ab- sorbing principle,the predictive models of interface force stable value and energy of cutting energy-- absorbing process were developed by using multi--linear regression analysis. The variance analyses were applied to check the significances of regression equation and coefficient of regression model. The effects of tool rake angel, chip central angel, cutting depth and cutting speed on properties of cutting energy--absorbing process were studied. The results show that the regression equation of predictive models is of significanees,tool rake angle and chip central angle on interface stable value is of signifieances,cutting depth and cutting speed on interface force stable value is not of significancestool rake angle, chip central angle and cutting depth on energy-absorbing is of significances, cutting speed on energy--absorbing is not of significances.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2013年第2期263-267,共5页
China Mechanical Engineering
基金
国家自然科学基金资助项目(51275432)
"十一五"国家科技支撑计划资助项目(2009BAG12A04-A11)
中央高校基本科研业务费专项资金资助项目(SWJTU09ZT23)
河南省教育厅科技攻关项目(12B580004)
关键词
轨道车辆
轴向切削
吸能装置
回归分析
预测模型
方差分析
rail vehicle
axial cutting
energy- absorbing component
regression analysis
predictive model
variance analysis
