基于FEM/BEM的开降噪孔金刚石圆锯片孔形研究  

Study on shape of noise-reduction holes on diamond circular saw blade based on FEM/BEM

作　　者：于家伟[1,2,3] 张进生[1,2,3,4] 王志[1,2,3] 叶鲁浩 葛健煜 高丽君[4] 

机构地区：[1]山东大学机械工程学院,济南250061 [2]山东省石材工程技术研究中心,济南250061 [3]山东大学高效洁净机械制造教育部重点实验室,济南250061 [4]山东大学海易研究院,山东日照276800

出　　处：《金刚石与磨料磨具工程》2016年第4期63-67,74,共6页Diamond & Abrasives Engineering

基　　金：山东省自主创新及成果转化专项(2014CGZH0802);山东省自然科学基金(ZR2012EEM032)

摘　　要：对降噪孔几何参数进行研究,以？960mm的金刚石圆锯片为例,将有限元和边界元方法相结合,分析不同降噪孔形状的金刚石圆锯片的振动情况,以计算得到的振动响应作为边界元模型的边界条件,计算金刚石圆锯片的声场特性,并对比分析不同形状降噪孔金刚石圆锯片的计算结果进。结果表明：圆形、三角形、五边形降噪孔金刚石圆锯片分别在低频段、中频段、高频段范围内降噪表现最好;整体降噪效果最明显的是五边形降噪孔金刚石圆锯片。并且提出了该种圆锯片工作的合理转速为346~378r/min和430~456r/min。To study the parameters of noise-reduction holes, 4960 mm diamond saw blades are selected as examples. Finite element method（FEM） and boundary element method（BEM） are used to analyze the vibration condition of the blades with different noise-reduction holes. The vibration response of FEM are used as the boundary condition of BEM model to calculate the characteristics of sound field and compare the results of saw blades with different noise-reduction holes. The results show that blades with circular holes perform better at low frequency, that those with triangular holes perform better in middle frequency and that those with pentagonal holes perform better at high frequency. It is concluded that blades with pentagonal holes are better considering the entire frequency segment, whose reasonable rotation speed should be 346-378 r/min and 430-456 r/min.

关 键 词：金刚石圆锯片 振动噪声 降噪孔形状 有限元法 边界元法 

分 类 号：TG74[金属学及工艺—刀具与模具]