扭转载荷下缺口参数对圆轴应力分布的影响  

Effect of Notch Parameters of Round Shaft on Stress Distribution under Torsion

作　　者：李有堂[1] 田利[1] 

机构地区：[1]兰州理工大学数字制造技术与应用省部共建教育部重点实验室,甘肃兰州730050

出　　处：《甘肃科学学报》2009年第4期68-71,共4页Journal of Gansu Sciences

基　　金：教育部重点项目(208152);甘肃省自然科学基金(3ZS061-A25-47)

摘　　要：讨论缺口几何参数对应力集中水平的影响.利用有限元软件ANSYS,建立扭转载荷下缺口轴的力学模型,计算缺口根部附近的局部应力应变,分析缺口几何参数对轴应力集中的影响.结果表明:缺口根部附近存在一很小区域,该区域的应力同缺口半径、缺口深度和张开角有关,在这个区域内,应力有统一的特性.The effect of notch parameters of round shaft on the stress concentration level was discussed. The mechanical model of shaft under torsional load was set up by using finite element software ANSYS. The local stress--strain near the tip of notch was calculated and the effect of notch parameters of round shaft on the stress concentration was analyzed. The results show that there is a small region,in which the stresses are related to a tip radius, depth and opening angle of the notch, and the stresses have uniform characteristics.

关 键 词：扭转 缺口参数 应力分布 

分 类 号：TH114[机械工程—机械设计及理论] O346[理学—固体力学]