强夯机转台强度和疲劳寿命研究

发布时间：2019-01-01 14:17

【摘要】：强夯机可用于多种地基处理,港口填海项目,飞机场项目,修建高铁、高速公路的地基或者桥梁项目都会用到强夯机,其作为一款高效、经济的夯实设备在市场上的需求量越来越大。强夯机转台作为强夯机的核心部件之一,其承载能力对强夯机整机的安全性能至关重要,在工程应用中,常常会出现强夯机转台变形或开裂的现象。为解决这一工程实际问题,同时为强夯机转台结构设计提供参考,本论文对强夯机转台进行了有限元力学强度计算和疲劳寿命研究。本论文首先对强夯机转台进行了力学分析,并选取了两种最不利的工况,利用AutoCAD Mechanical和Matlab软件的强大计算功能进行了力学计算。其次,利用SolidWorks软件建立三维模型,利用ANSYS软件建立有限元模型,并选择强夯机转台最不利的条件,对其进行强度计算和有限元仿真分析;结合仿真分析结果对比力学计算,表明强夯机转台强度符合设计要求,而且仿真结果更接近真实情况。最后,利用ANSYS Workbench里的Fatigue tool工具,对最危险工况下的强夯机转台进行了疲劳寿命分析和预测,并计算其疲劳强度。本论文对强夯机转台强度和疲劳寿命的研究成果,为强夯机转台的结构设计提供了理论依据。同时本论文的分析方法具有较高的通用性和工程实践价值,可为强夯机其它结构件的设计和改进提供参考依据。
[Abstract]:Dynamic rammer can be used in many kinds of foundation treatment, port reclamation project, airport project, high speed railway construction, highway foundation or bridge project. Economic tamping equipment in the market demand is increasing. As one of the core components of the dynamic rammer, the bearing capacity of the rotary table of the dynamic rammer is very important to the safety performance of the whole machine. In the engineering application, the deformation or cracking of the rotary table of the dynamic rammer is often observed. In order to solve this practical problem and to provide a reference for the structural design of the rotary table of the dynamic rammer, the finite element mechanical strength calculation and fatigue life of the rotary table of the dynamic rammer are studied in this paper. In this paper, the mechanical analysis of the rotary table of the dynamic rammer is carried out at first, and two kinds of most unfavorable working conditions are selected, and the mechanical calculation is carried out by using the powerful calculation function of AutoCAD Mechanical and Matlab software. Secondly, SolidWorks software is used to build 3D model, ANSYS software is used to establish finite element model, and the most unfavorable conditions of dynamic rammer turntable are selected for strength calculation and finite element simulation analysis. In combination with the results of simulation analysis, the results of mechanical calculation show that the strength of the rotary table of the dynamic rammer meets the design requirements, and the simulation results are closer to the real situation. Finally, the fatigue life and fatigue strength of the turntable of the dynamic rammer under the most dangerous working conditions are analyzed and predicted by using the Fatigue tool in ANSYS Workbench. This paper provides the theoretical basis for the structural design of the rotary table of the dynamic compaction machine by the research results of the strength and fatigue life of the rotary table of the dynamic rammer. At the same time, the analysis method of this paper has higher generality and engineering practice value, which can provide reference for the design and improvement of other structural parts of dynamic rammer.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU662

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