基于DOE的柴油机曲轴优化设计研究  

Study on optimization design of crankshaft of diesel engine based on DOE

作　　者：宋丽莉[1] 朱海荣[2] 李庆[1] 

机构地区：[1]重庆电子工程职业学院机电工程学院,重庆400030 [2]北京理工大学机械与车辆学院,北京100081

出　　处：《矿山机械》2013年第6期106-110,共5页Mining & Processing Equipment

基　　金：国家"973"重大基础研究项目(613570303)

摘　　要：基于ANSYS Workbench仿真计算平台,笔者建立了柴油机曲轴的有限元分析模型,计算了柴油机曲轴在静止受压状态下的应力场分布,完成了有限元模型的校核。采用试验设计方法(Design Of Experimentsmethod,DOE),将曲轴壁厚、主轴颈长度、曲柄销长度、连杆轴颈过渡圆角半径及主轴颈过渡圆角半径作为输入参数,曲轴质量及最大应力作为输出参数,完成了柴油机曲轴的多目标优化。优化后曲轴质量和最大应力均有所降低,从而改善了曲轴的质量和应力特性。Based on ANSYS Workbench simulation platform, FEA model of the crankshaft of a diesel engine was built. The stress field distribution of the crankshaft in static compression state was computed, and the FEA model was verified. Based on DOE （Design Of Experiments） method, multi-objective optimization design of the crankshaft was completed, considering wall thickness of the crankshaft, length of main journal, length of crank pin, fillet radius of connecting rod journal and fillet radius of main bearing journal as input parameters, and the mass and maximum stress of the crankshaft as output parameters. After optimization, both the mass and the maximum stress of the crankshaft decreased. Thus, the mass and the stresscharacteristics improved.

关 键 词：柴油机曲轴 有限元 DOE 曲轴质量 最大应力 多目标优化 

分 类 号：TK423[动力工程及工程热物理—动力机械及工程]