集雪螺旋叶片的结构优化及模态分析研究
发布时间：2018-08-28 12:11
【摘要】：为了使小型扫雪器最主要执行部件螺旋叶片的结构更加合理,在原有叶片设计仅凭经验数据基础上定性定量地确定出可以优化螺旋叶片性能的结构参数值。对螺旋集雪器集雪过程中,叶片表面上的雪颗粒进行运动分析,建立雪颗粒运动的数学模型,得到叶片主要结构参数与集雪器除雪效率的直接关系。运用有限元理论和基于软件ANSY/Workbench,建立不同结构参数值条件下的叶片有限元模型并进行仿真分析。通过静态特性分析,确定螺旋叶片螺距和厚度的最优值,确保叶片足够的强度刚度,弥补了螺旋叶片的设计不足。通过预应力模态分析,得到叶片转速的合理区间,为以后使用中避免共振提供了重要的理论依据。
[Abstract]:In order to make the structure of the spiral blade, the main executive part of the small snow sweeper, more reasonable, the structural parameters which can optimize the performance of the spiral blade can be determined qualitatively and quantitatively on the basis of the original blade design only on the basis of empirical data. The movement of snow particles on the blade surface of the spiral snow collector is analyzed and the mathematical model of the snow particle movement is established. The direct relationship between the main structural parameters of the blade and the snow removal efficiency of the snow collector is obtained. Based on the finite element theory and software ANSY/Workbench, the blade finite element model with different structural parameters was established and simulated. Through static characteristic analysis, the optimum value of screw pitch and thickness of spiral blade is determined to ensure sufficient strength and rigidity of blade, which makes up for the insufficient design of spiral blade. Through the modal analysis of prestressing force, the reasonable range of blade speed is obtained, which provides an important theoretical basis for avoiding resonance in later use.
【作者单位】： 华北理工大学机械工程学院;
【基金】：唐山市重点汽车实验建设(12130201A-2)
【分类号】：TH122
，
本文编号：2209357
[Abstract]:In order to make the structure of the spiral blade, the main executive part of the small snow sweeper, more reasonable, the structural parameters which can optimize the performance of the spiral blade can be determined qualitatively and quantitatively on the basis of the original blade design only on the basis of empirical data. The movement of snow particles on the blade surface of the spiral snow collector is analyzed and the mathematical model of the snow particle movement is established. The direct relationship between the main structural parameters of the blade and the snow removal efficiency of the snow collector is obtained. Based on the finite element theory and software ANSY/Workbench, the blade finite element model with different structural parameters was established and simulated. Through static characteristic analysis, the optimum value of screw pitch and thickness of spiral blade is determined to ensure sufficient strength and rigidity of blade, which makes up for the insufficient design of spiral blade. Through the modal analysis of prestressing force, the reasonable range of blade speed is obtained, which provides an important theoretical basis for avoiding resonance in later use.
【作者单位】： 华北理工大学机械工程学院;
【基金】：唐山市重点汽车实验建设(12130201A-2)
【分类号】：TH122
，
本文编号：2209357
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