偏置锯切力对圆锯片辐射噪声能量影响的研究
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摘要
将热切机圆锯片锯切时表面的辐射噪声量按照板的噪声辐射情况考虑,推导了噪声辐射能量与锯片表面轴向振动速度均方值的关系。分析了圆盘锯在锯切过程中由振动导致径向和切向脉冲力偏置的原因,同时在此基础上以圆锯片辐射噪声能量为评价指标,利用有限元得到了径向锯切力和切向锯切力偏置对圆锯片轴向振动模态和声辐射特性的影响。
In this paper,the radiation noise of the hot saw circular saw surface is considered as the board,and the relationship between the noise radiation energy and the mean square vibration velocity of the saw blade surface is derived. The reasons for the radial and tangential pulse force bias caused by the vibration of the circular saw during the sawing process are analyzed. At the same time,the radiated noise energy of the circular saw blade is used as the evaluation index,and the radial saw is obtained by finite element. It gets the effect of both shear and tangential sawing force offset on the axial vibration mode and acoustic radiation characteristics.
In this paper,the radiation noise of the hot saw circular saw surface is considered as the board,and the relationship between the noise radiation energy and the mean square vibration velocity of the saw blade surface is derived. The reasons for the radial and tangential pulse force bias caused by the vibration of the circular saw during the sawing process are analyzed. At the same time,the radiated noise energy of the circular saw blade is used as the evaluation index,and the radial saw is obtained by finite element. It gets the effect of both shear and tangential sawing force offset on the axial vibration mode and acoustic radiation characteristics.
引文
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[8]李黎,习宝田.圆锯片振动、动态稳定性及其控制技术的研究[J].木工机床,2002(02):5-10.
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[11]李阳,王砚军,秦可.基于ANSYS Workbench金刚石圆锯片的力学分析[J].金刚石与磨料磨具工程,2017,37(02):41-45.
[12]叶鲁浩,王志,张进生,等.基于ANSYS圆锯片模态分析及谐响应分析[J].金刚石与磨料磨具工程,2015,35(04):41-46.
[2]马建敏.旋转锯切噪声研究综述[J].噪声与振动控制,1999(06):3-5.
[3]马建敏.大型冷锯机锯切噪声声功率的预估[J].应用力学学报,2001,18(03):12-13.
[4]郭兴旺.金属热切圆锯片振动和噪声的研究[D].北京:北京科技大学,1998:10-12.
[5]马建敏.金属旋转锯切噪声预估理论及控制技术的研究[D].西安:西安交通大学,1998:25-36.
[6]臧勇.圆锯片的有限元模态分析[J].重型机械,2002(01):49-52.
[7]臧勇.金属热锯机声振特性的实验研究[J].噪声与振动控制,1996(05):2-3.
[8]李黎,习宝田.圆锯片振动、动态稳定性及其控制技术的研究[J].木工机床,2002(02):5-10.
[9]马建敏.大型冷锯机锯切噪声声功率的预估[J].应用力学学报,2001,18(03):12-13.
[10]M.P.诺顿.工程噪声和振动分析基础[M].北京:航空工业出版社,1993:10-25.
[11]李阳,王砚军,秦可.基于ANSYS Workbench金刚石圆锯片的力学分析[J].金刚石与磨料磨具工程,2017,37(02):41-45.
[12]叶鲁浩,王志,张进生,等.基于ANSYS圆锯片模态分析及谐响应分析[J].金刚石与磨料磨具工程,2015,35(04):41-46.