电动角磨机动态响应与噪声分析
发布时间：2018-10-09 12:38
【摘要】：电动角磨机（包括齿轮副、转子、定子、轴承、齿轮箱、外壳等零部件）是振动与噪声产生的重要源头之一，，特别是在高速旋转时由各零部件间的碰撞所激发的振动与由此产生的噪声给长期的使用者带来了一定的身心伤害。如何有效地减振和降噪一直是研究者研究的课题，本文对小型高速的电动角磨机的动态响应与噪声进行有限元建模和数值计算分析，并进行了实验验证。实验结果验证了有限元模型和数值仿真算法的有效性与正确性。本文的主要研究内容如下： （1）电动角磨机整机模型模态分析，分析了电动角磨机整机模型的前10阶固有频率及其固有振型； （2）电动角磨机整机模型瞬态分析，研究了电动角磨机整机模型在空载状态下的动态响应特性； （3）电动角磨机齿轮副啮合碰撞分析，计算了电动角磨机齿轮副在啮合初期的啮合应力； （4）电动角磨机整机模型噪声分析，分析了电动角磨机整机模型对周围4m的球面上的声场分布情况； （5）电动角磨机振动和噪声实验，以此来验证针对电动角磨机所建立的整机有限元模型以及该电动角磨机的动态响应和噪声辐射数值分析结果的正确性。
[Abstract]:Electric angle grinder (including gear pair, rotor, stator, bearing, gear box, shell and other parts) is one of the important sources of vibration and noise. Especially when rotating at high speed, the vibration and noise caused by the collision between the parts and components bring a certain amount of physical and mental harm to the long-term users. How to effectively reduce vibration and noise has been a research topic of researchers. The finite element modeling and numerical analysis of dynamic response and noise of small high-speed electric angle mill are carried out in this paper, and the experimental results are verified. The experimental results verify the validity and correctness of the finite element model and numerical simulation algorithm. The main contents of this paper are as follows: (1) Modal analysis of the whole model of electric angle mill, the first 10 natural frequencies and their natural modes of the whole model of electric angle mill are analyzed. (2) transient analysis of the whole model of the electric angle mill, the dynamic response characteristics of the whole model of the electric angle mill under the condition of no load, (3) the meshing collision analysis of the gear pair of the electric angle mill, The meshing stress of the gear pair of the electric angle mill at the beginning of meshing is calculated. (4) the noise analysis of the whole machine model of the electric angle mill is carried out and the distribution of the sound field on the spherical surface around 4 m of the whole model of the electric angle mill is analyzed. (5) the vibration and noise experiments of the electric angle mill are carried out to verify the validity of the finite element model established for the electric angle mill and the results of the dynamic response and noise radiation numerical analysis of the electric angle mill.
【学位授予单位】：苏州大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TB535
本文编号：2259363
[Abstract]:Electric angle grinder (including gear pair, rotor, stator, bearing, gear box, shell and other parts) is one of the important sources of vibration and noise. Especially when rotating at high speed, the vibration and noise caused by the collision between the parts and components bring a certain amount of physical and mental harm to the long-term users. How to effectively reduce vibration and noise has been a research topic of researchers. The finite element modeling and numerical analysis of dynamic response and noise of small high-speed electric angle mill are carried out in this paper, and the experimental results are verified. The experimental results verify the validity and correctness of the finite element model and numerical simulation algorithm. The main contents of this paper are as follows: (1) Modal analysis of the whole model of electric angle mill, the first 10 natural frequencies and their natural modes of the whole model of electric angle mill are analyzed. (2) transient analysis of the whole model of the electric angle mill, the dynamic response characteristics of the whole model of the electric angle mill under the condition of no load, (3) the meshing collision analysis of the gear pair of the electric angle mill, The meshing stress of the gear pair of the electric angle mill at the beginning of meshing is calculated. (4) the noise analysis of the whole machine model of the electric angle mill is carried out and the distribution of the sound field on the spherical surface around 4 m of the whole model of the electric angle mill is analyzed. (5) the vibration and noise experiments of the electric angle mill are carried out to verify the validity of the finite element model established for the electric angle mill and the results of the dynamic response and noise radiation numerical analysis of the electric angle mill.
【学位授予单位】：苏州大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TB535
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