超薄硬质合金圆锯片槽孔结构的减振优化设计  

Optimization Design of Vibration Reduction for Ultra-thin Circular Saw Blade with Slot Hole

作　　者：贾娜[1] 陈肖男 岳德国 花军[1] Jia Na;Chen Xiaonan;Yue Deguo;Hua Jun(College of Mechanical and Electrical Engineering of Northeast Forestry University,Harbin 150040,China)

机构地区：[1]东北林业大学机电工程学院 [2]金隅天坛(唐山)木业科技有限公司

出　　处：《工具技术》2022年第8期62-66,共5页Tool Engineering

基　　金：教育部高等学校博士学科点专项科研基金(20130062110005)。

摘　　要：提出了超薄硬质合金圆锯片槽孔结构的减振设计方法,利用拓扑优化和形状优化相结合的方式,将超薄硬质合金圆锯片的槽孔结构设计问题转化为槽孔位置优化和形状优化。建立有限元模型,以圆锯片整体柔度作为目标函数,通过分析伪密度区域的分布情况,确定锯片上可以开设槽孔的区域;以开设槽孔后锯片整体振幅峰值为目标函数,利用插值法与模式搜索算法建立槽孔结构的优化模型,采用数值模拟的方法得到目标函数的最优解,进而获得槽孔结构形状。分析结果表明:所提出的槽孔设计方法能够获得边界条件下的最优槽孔结构,开槽孔后的锯片在满足结构刚度的条件下,振幅处于较小的范围;研究结果可为后续超薄硬质合金圆锯片的多元目标优化提供基础。This work proposes a novel approach combining topology optimization and shape optimization to a vibration reduction design method of slot structure of ultra-thin cemented carbide circular saw blade with slotted hole structure,which converts slot structure design to shape and position optimization.Overall compliance of the saw blade is selected as objective.Optimal slot areas are obtained through the analysis of the distribution of pseudo-density regions based on finite element model.Furthermore,interpolation and pattern search are utilized to minimize the peak amplitude of the slotted saw blade.The solution is attained via numeric simulation,indicating a corresponding optimum slot structure.The results demonstrate that the optimal slot structure,subject to given marginal constraints,can be obtained with the presented approach.The aforementioned slot structure can limit the amplitude of the saw blade to a satisfactory range with controlled structural stiffness.The research result of this paper provides a basis for the multi-objective optimization of ultra thin tungsten carbide tipped circular saw blade.

关 键 词：超薄硬质合金圆锯片 拓扑优化 形状优化 模式搜索算法 

分 类 号：TG333.22[金属学及工艺—金属压力加工] TH122[机械工程—机械设计及理论]