高强度曲轴静态特性仿真与试验研究
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摘要
采用ANSYS有限元软件,建立了480柴油机整体和单拐曲轴的静态特性分析模型,针对不同的约束条件,对两种模型的弯曲疲劳强度进行计算,指出了两种模型下的应力集中区域以及应力分布和变形情况;两种模型应力值均未超出曲轴的许用应力。通过曲轴弯曲疲劳强度试验,对480柴油机单拐曲轴进行了弯曲疲劳试验,测量了弯矩随循环基数的变化情况。结果表明,采用整体和单拐曲轴的静态特性分析模型,应力集中比较危险的区域出现在主轴颈、连杆轴颈与曲柄臂的过渡圆角区域;整体较于单拐模型可以更全面、真实反映曲轴各拐的静态特性。
Single and whole crankshaft of 480 diesel engine was analyzed by ANSYS software. Endurance bending strength of two models was calculated under different loading conditions, which could reflect the strength concentration, strength and transformation distribution, which was the limit of allowed strength. Endurance bending strength experiment for single crankshaft of 480 diesel engine was taken to calculate the variation of circulated cardinal number of bending moment. Through contrast of results of single and whole crankshaft, it reflected strength concentration area was more likely to appear the transition area between the crank and connecting rod journal or main journal. Whole crankshaft model could reflected the static quality of crankshaft more comprehensively and actually than single model.
Single and whole crankshaft of 480 diesel engine was analyzed by ANSYS software. Endurance bending strength of two models was calculated under different loading conditions, which could reflect the strength concentration, strength and transformation distribution, which was the limit of allowed strength. Endurance bending strength experiment for single crankshaft of 480 diesel engine was taken to calculate the variation of circulated cardinal number of bending moment. Through contrast of results of single and whole crankshaft, it reflected strength concentration area was more likely to appear the transition area between the crank and connecting rod journal or main journal. Whole crankshaft model could reflected the static quality of crankshaft more comprehensively and actually than single model.
引文
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[5]田延晖.基于ABAQUS的曲轴有限元分析[D].天津:河北工业大学,2014.(Tian Yan-hui.Finite element analysis on crankshaft based on ABAQUS[D].Tianjin:Hebei University of Technology,2014.)
[6]丁宇.柴油机曲轴性能分析及曲轴强度计算方法研究[D].哈尔滨:哈尔滨工程大学,2006.(Ding Yu.The performance analysis of diesel crankshaft and the researeh for calculation method of crankshaft fatigue strength[D].Harbin:Harbin Engineering University,2006.)
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[8]吴武辉,程俊,黎水平.整体曲轴疲劳强度与自由模态有限元分析[J].机械设计与制造,2008(7):59-61.(Wu Wu-hui,Cheng Jun,Li Shui-ping.FEM analysis on one-piece crankshaft of fatigue strength and free mode[J].Machinery Design&Manufacture,2008(7):59-61.)
[9]谢丽颖.汽车发动机曲轴疲劳试验方法[J].汽车工艺与材料,2006(3):9-12.(Xie Li-ying.Study on bending fatigue test of automotive engine crankshaft[J].Automobile Technology&Material,2006(3):9-12.)
[10]程绍桐,王致钊,程淑颖.柴油机曲轴可靠性分析[J].内燃机与配件,2008(4):23-28.(Cheng Shao-tong,Wang Zhi-zhao,Cheng Shu-ying.Reliability analysis of diesel engine crankshaft[J].Internal Combustion Engine&Parts,2008(4):23-28.
[2]邓召文,陈涛.基于ANSYS的BN492发动机曲轴有限元分析[J].农业装备与车辆工程,2010(8):29-33.(Deng Zhao-wen,Chen Tao.Finite element analysis of BN492 engine crankshaft by Ansys[J].Agricultural Equipment and Vehicle Engineering,2010,26(8):29-33.)
[3]Mourelatos Z P.A crankshaft system model for structural dynamic analysis of internal combustion engines[J].Computers&Structures,2001,79(20):2009-2027.
[4]唐传茵,宋桂秋,赵广耀.某V8发动机曲轴三维设计及有限元分析[J].农业装备与车辆工程,2012,50(7):5-8.(Tang Chuan-yin,Song Gui-qiu,Zhao Guang-yao.Three dimensional design and finite element analysis of some v8 cylinder engine crankshaft[J].Agricultural Equipment&Vehicle Engineering,2012,50(7):5-8.)
[5]田延晖.基于ABAQUS的曲轴有限元分析[D].天津:河北工业大学,2014.(Tian Yan-hui.Finite element analysis on crankshaft based on ABAQUS[D].Tianjin:Hebei University of Technology,2014.)
[6]丁宇.柴油机曲轴性能分析及曲轴强度计算方法研究[D].哈尔滨:哈尔滨工程大学,2006.(Ding Yu.The performance analysis of diesel crankshaft and the researeh for calculation method of crankshaft fatigue strength[D].Harbin:Harbin Engineering University,2006.)
[7]徐中明,牟笑静,彭旭阳.基于有限元法的发动机曲轴静强度分析[J].重庆大学学报,2008,31(9):977-981.(Xu Zhong-ming,Mu Xiao-jing,Peng Xu-yang.Engine crankshaft static strength analysis based on the finite element method[J].Journal of Chongqing University,2008,31(9):977-981.)
[8]吴武辉,程俊,黎水平.整体曲轴疲劳强度与自由模态有限元分析[J].机械设计与制造,2008(7):59-61.(Wu Wu-hui,Cheng Jun,Li Shui-ping.FEM analysis on one-piece crankshaft of fatigue strength and free mode[J].Machinery Design&Manufacture,2008(7):59-61.)
[9]谢丽颖.汽车发动机曲轴疲劳试验方法[J].汽车工艺与材料,2006(3):9-12.(Xie Li-ying.Study on bending fatigue test of automotive engine crankshaft[J].Automobile Technology&Material,2006(3):9-12.)
[10]程绍桐,王致钊,程淑颖.柴油机曲轴可靠性分析[J].内燃机与配件,2008(4):23-28.(Cheng Shao-tong,Wang Zhi-zhao,Cheng Shu-ying.Reliability analysis of diesel engine crankshaft[J].Internal Combustion Engine&Parts,2008(4):23-28.