过渡圆角尺寸对错拐曲轴强度影响分析  

Influence Analysis of the Dimension of Transition Fillet on Strength of Stagger Crankshaft

作　　者：颜波[1] 张保成[1] 金峰 

机构地区：[1]中北大学机械工程与自动化学院,山西太原030051 [2]装甲兵太原地区军代室

出　　处：《小型内燃机与摩托车》2012年第1期26-29,共4页Small Internal Combustion Engine and Motorcycle

摘　　要：利用有限元分析方法,研究探讨了错拐曲轴结构过渡圆角尺寸改变时轴颈圆角处应力变化规律,以某90°V6柴油机错拐曲轴为例,分别模拟5种不同结构方案在相同工况下轴颈过渡圆角处应力情况,并对薄弱部位进行疲劳强度分析、校核。其模拟结果表明:增大过渡圆角尺寸在不同程度上降低各轴颈过渡圆角处的应力峰值,并作为提高曲轴疲劳强度的一种有效手段,为错拐曲轴设计及结构优化提供参考。The variation trend of stress in stagger crankshaft fillets when changing the dimension of transition fillets has been studied by FEA method in this paper.Taking the Stagger crankshaft of certain 90° V6 engine as a sample,the stresses distribution of five different structural crankshafts is analyzed and simulated under the same condition,then the fatigue strength of weak part is analyzed and checked.The simulated results show that peak stresses of different stagger crankshaft fillets decreased to a certain degree due to increasing the dimension of transition fillets,which is an effective method to improve fatigue strength.The result provides a valuable reference for stagger crankshaft design and structure optimization.

关 键 词：过渡圆角 错拐曲轴 有限元 结构强度 

分 类 号：TK423[动力工程及工程热物理—动力机械及工程]