工程机械液压缸有限元分析研究

发布时间：2017-12-27 10:07

本文关键词：工程机械液压缸有限元分析研究　出处：《吉林大学》2012年硕士论文　论文类型：学位论文

【摘要】：根据目前工程机械的实际运行状况及面临问题，主要对混凝土泵车、汽车起重机和挖掘机液压缸进行分析。利用有限元分析软件，对混凝土泵车和汽车起重机的典型液压缸进行静态强度、动态强度和压杆稳定性等全面分析，根据所得结果重点对液压缸的耳环进行疲劳分析。与采用传统的设计方法所得结果进行比较，证实了有限元的分析方法适用于液压缸的设计，同时又优于传统设计方法。另外，对于挖掘机这种重要且特殊的工程机械，工作频率高、冲击大，对液压缸有较高的缓冲要求；本文增加了挖掘机液压缸缓冲装置数学分析部分，建立数学模型，利用MATLAB软件的Simulink5.0软件包进行仿真，，并根据所得结果得出优化结论。通过对常用工程机械液压缸的有限元分析和缓冲分析，结合多年企业研发的实践经验提出建议，希望为同行业技术发展提供了一点参考和借鉴价值。
[Abstract]:According to the actual operating conditions and problems facing the present construction machinery, the main hydraulic cylinders of concrete pump trucks, truck cranes and excavators are analyzed. Based on the finite element analysis software, the static strength, dynamic strength and compressive bar stability of the typical hydraulic cylinders of concrete pump trucks and truck cranes are comprehensively analyzed. Based on the results, the fatigue analysis of the earrings of the hydraulic cylinders is emphasized. Compared with the results obtained by the traditional design method, it is confirmed that the finite element analysis method is suitable for the design of the hydraulic cylinder, and is superior to the traditional design method. In addition, for construction machinery, the important and special, high working frequency, the impact of large, high buffer requirements of the hydraulic cylinder; the increase of excavator hydraulic cylinder buffer device of mathematical analysis, mathematical model, using MATLAB software Simulink5.0 software package to simulate and optimize conclusion according to the results. Based on the finite element analysis and buffer analysis of hydraulic cylinders of common construction machinery, combined with the practical experience of R & D for many years, some suggestions are put forward, hoping to provide some reference and reference value for the development of technology in the same industry.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH137.51;TU646;TU621

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