400 MN钢丝缠绕模锻液压机机架动态性能研究
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摘要
运用有限元分析软件ABAQUS对400 MN模锻液压机机架进行模态分析,提取前十阶固有频率和振型,分析了各阶振型产生原因及其形式对液压机性能的影响,研究了机架在不同预紧系数下固有频率变化规律以及剖分坎合结构对液压机的动态性能的影响。研究结果表明,预紧系数在0～0. 05之间变化时,机架固有频率随其增大而增大,大于0. 05之后,固有频率基本保持恒定,钢丝预紧作用使机架的固有频率提高了7%～35%,该模锻液压机机架的最小固有频率为5. 49 Hz远大于其工作时频率,设备工作时不会发生共振现象,而剖分坎合结构不改变液压机机架的固有频率和振幅,对其动态性能无影响。
The modal analysis of frame for 400 MN hydraulic mold forging press was performed by the finite element analysis software ABAQUS,and the first ten order natural frequencies and vibration modes were extracted. Then,the causes of various vibration modes and their effects on the performance of hydraulic press were analyzed,and the change law of the natural frequency of frame under different pre-stressed factors and the influence of bumpy ridge joining structure on the dynamic performance of hydraulic press were studied.The results show that when the pre-stressed factor increases from 0 to 0. 05,the natural frequency of frame increases,and after it is greater than 0. 05,the natural frequency remains basically constant. Furthermore,the pre-stress effect of steel wire increases the natural frequency of frame by 7% to 35%,and the minimum natural frequency of the hydraulic mold forging press frame is 5. 49 Hz,which is much larger than the working frequency,and the equipment does not resonate when it is working. However,the bumpy ridge joining structure cannot change the natural frequency and amplitude and has no effect on the overall dynamic performance of the hydraulic press.
The modal analysis of frame for 400 MN hydraulic mold forging press was performed by the finite element analysis software ABAQUS,and the first ten order natural frequencies and vibration modes were extracted. Then,the causes of various vibration modes and their effects on the performance of hydraulic press were analyzed,and the change law of the natural frequency of frame under different pre-stressed factors and the influence of bumpy ridge joining structure on the dynamic performance of hydraulic press were studied.The results show that when the pre-stressed factor increases from 0 to 0. 05,the natural frequency of frame increases,and after it is greater than 0. 05,the natural frequency remains basically constant. Furthermore,the pre-stress effect of steel wire increases the natural frequency of frame by 7% to 35%,and the minimum natural frequency of the hydraulic mold forging press frame is 5. 49 Hz,which is much larger than the working frequency,and the equipment does not resonate when it is working. However,the bumpy ridge joining structure cannot change the natural frequency and amplitude and has no effect on the overall dynamic performance of the hydraulic press.
引文
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[11]田世权,杜诗文,李永堂,等.基于ANSYS Workbench的冷敲机花键轴模态分析[J].锻压技术,2017,42(11):109-114.Tian S Q,Du S W,Li Y T,et al. Modal analysis on spline shaftof cold-striking machine based on ANSYS Workbench[J]. Forg-ing&Stamping Technology,2017,42(11):109-114.
[12]王利臣.多向模锻液压机有限元分析及特征刚度的研究[D].天津:天津理工大学,2014.Wang L C. Finite Element Analysis and Study on the CharacteristicStiffness of the Multi-cored Forging Hydraulic Press[D]. Tianjin:Tianjin University of Technology,2014.
[13]冯明益.车轮模锻液压机新式结构研究[D].秦皇岛:燕山大学,2013.Feng M Y. Wheel Die Forging Hydraulic Press New Structure Re-search[D]. Qinhuangdao:Yanshan University,2013.
[14]于栓栓. 6. 5 MN多向模锻液压机本体结构设计与分析[D].秦皇岛:燕山大学,2014.Yu S S. 6. 5 MN Multi-cored Forging Hydraulic Press Body Struc-ture Design and Analysis[D]. Qinhuangdao:Yanshan Universi-ty,2014.
[15]张剑寒,曾攀,颜永年,等. 400 MN航空模锻液压机机架有限元分析[J].锻压技术,2009,34(4):93-96.Zhang J H,Zeng P,Yan Y N,et al. Finite element analysis of400 MN aviation die forging hydraulic press frame[J]. Forging&Stamping Technology,2009,34(4):93-96.
[16]何文斌,曾攀,赵加清,等.重型液压机机架变形的数字图像相关测量与降温法有限元模拟[J].机械工程学报,2015,51(18):34-41.He W B,Zeng P,Zhao J Q,et al. Deformation measurementbased on DIC and finite element analysis based on cooling methodof heavy hydraulic press frame[J]. Journal of Mechanical Engi-neering,2015,51(18):34-41.
[2]颜永年,刘海霞,曾攀,等.重型钢丝缠绕预应力剖分-坎合结构概述[J].机械工程学报,2009,45(11):306-311.Yan Y N,Liu H X,Zeng P,et al. Overview of heavy prestressedbumpy ridge joining structure with steel wire wound[J]. Journalof Mechanical Engineering,2009,45(11):306-311.
[3]梁君,赵登峰.模态分析方法综述[J].现代制造工程,2006,(8):139-141.Liang J,Zhao D F. Summary of the model analysis method[J].Modern Manufacturing Engineering,2006,(8):139-141.
[4]段智勇.巨型模锻液压机整体结构功能评估与优化设计[D].长沙:中南大学,2008.Duan Z Y. Evaluation and Optimization Design of the OverallStructure of Giant Die Forging Hydraulic Press[D]. Changsha:Central South University,2008.
[5] Ing Martin Zahálka. Modal analysis of hydraulic press frames foropen die forging[J]. Procedia Engineering,2014,69(1):1070-1075.
[6] Raz K,Kubec V,Cechura M. Dynamic behavior of the hydraulicpress for free forging[J]. Procedia Engineering,2015,100:885-890.
[7]刘海霞,颜永年,曾攀,等.钢丝缠绕拱梁立柱全剖分-坎合机架[J].机械工程学报,2011,47(4):82-87.Liu H X,Yan Y N,Zeng P,et al. Pillar and arched girder totallybumpy ridge joining frame with steel wire wound[J]. Journal ofMechanical Engineering,2011,47(4):82-87.
[8]王忠峰. 400MN模锻液压机加工制造技术研究[J].科学之友,2013,(4):3-5.Wang Z F. 400 MN die forging hydraulic press processing manu-facturing technology research[J]. Friend of Science Amateurs,2013,(4):3-5.
[9]何文斌,曾攀,张磊,等.基于有限元的400 MN大型模锻压力机温度场分析[J].机械工程学报,2015,51(2):30-36.He W B,Zeng P,Zhang L,et al. Temperature field analysis of400 MN heavy die forging press based on finite element method[J]. Journal of Mechanical Engineering,2015,51(2):30-36.
[10]王文杰,林峰,张磊,等. 400 MN多向模锻液压机承载结构的普通模锻工作性能分析[J].锻压技术,2016,41(3):54-58.Wang W J,Lin F,Zhang L,et al. Analysis on ordinary forgingperformance for bearing structure of 400 MN multi-directional dieforging hydraulic press[J]. Forging&Stamping Technology,2016,41(3):54-58.
[11]田世权,杜诗文,李永堂,等.基于ANSYS Workbench的冷敲机花键轴模态分析[J].锻压技术,2017,42(11):109-114.Tian S Q,Du S W,Li Y T,et al. Modal analysis on spline shaftof cold-striking machine based on ANSYS Workbench[J]. Forg-ing&Stamping Technology,2017,42(11):109-114.
[12]王利臣.多向模锻液压机有限元分析及特征刚度的研究[D].天津:天津理工大学,2014.Wang L C. Finite Element Analysis and Study on the CharacteristicStiffness of the Multi-cored Forging Hydraulic Press[D]. Tianjin:Tianjin University of Technology,2014.
[13]冯明益.车轮模锻液压机新式结构研究[D].秦皇岛:燕山大学,2013.Feng M Y. Wheel Die Forging Hydraulic Press New Structure Re-search[D]. Qinhuangdao:Yanshan University,2013.
[14]于栓栓. 6. 5 MN多向模锻液压机本体结构设计与分析[D].秦皇岛:燕山大学,2014.Yu S S. 6. 5 MN Multi-cored Forging Hydraulic Press Body Struc-ture Design and Analysis[D]. Qinhuangdao:Yanshan Universi-ty,2014.
[15]张剑寒,曾攀,颜永年,等. 400 MN航空模锻液压机机架有限元分析[J].锻压技术,2009,34(4):93-96.Zhang J H,Zeng P,Yan Y N,et al. Finite element analysis of400 MN aviation die forging hydraulic press frame[J]. Forging&Stamping Technology,2009,34(4):93-96.
[16]何文斌,曾攀,赵加清,等.重型液压机机架变形的数字图像相关测量与降温法有限元模拟[J].机械工程学报,2015,51(18):34-41.He W B,Zeng P,Zhao J Q,et al. Deformation measurementbased on DIC and finite element analysis based on cooling methodof heavy hydraulic press frame[J]. Journal of Mechanical Engi-neering,2015,51(18):34-41.