電動角磨機動態(tài)響應與噪聲分析
發(fā)布時間:2018-10-09 12:38
【摘要】:電動角磨機(包括齒輪副、轉子、定子、軸承、齒輪箱、外殼等零部件)是振動與噪聲產(chǎn)生的重要源頭之一,,特別是在高速旋轉時由各零部件間的碰撞所激發(fā)的振動與由此產(chǎn)生的噪聲給長期的使用者帶來了一定的身心傷害。如何有效地減振和降噪一直是研究者研究的課題,本文對小型高速的電動角磨機的動態(tài)響應與噪聲進行有限元建模和數(shù)值計算分析,并進行了實驗驗證。實驗結果驗證了有限元模型和數(shù)值仿真算法的有效性與正確性。本文的主要研究內(nèi)容如下: (1)電動角磨機整機模型模態(tài)分析,分析了電動角磨機整機模型的前10階固有頻率及其固有振型; (2)電動角磨機整機模型瞬態(tài)分析,研究了電動角磨機整機模型在空載狀態(tài)下的動態(tài)響應特性; (3)電動角磨機齒輪副嚙合碰撞分析,計算了電動角磨機齒輪副在嚙合初期的嚙合應力; (4)電動角磨機整機模型噪聲分析,分析了電動角磨機整機模型對周圍4m的球面上的聲場分布情況; (5)電動角磨機振動和噪聲實驗,以此來驗證針對電動角磨機所建立的整機有限元模型以及該電動角磨機的動態(tài)響應和噪聲輻射數(shù)值分析結果的正確性。
[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.
【學位授予單位】:蘇州大學
【學位級別】:碩士
【學位授予年份】:2014
【分類號】:TB535
本文編號: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.
【學位授予單位】:蘇州大學
【學位級別】:碩士
【學位授予年份】:2014
【分類號】:TB535
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