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工程设计学报
工程设计学报  2017, Vol. 24 Issue (2): 162-167    DOI: 10.3785/j.issn.1006-754X.2017.02.006
设计理论与方法学     
旋转超声磨削钛合金有限元仿真与试验研究
刘凡, 秦娜, 牛健地, 郑亮
西南交通大学 机械工程学院, 四川 成都 610031
Finite element simulation and experimental research on rotary ultrasonic grinding of titanium alloy
LIU Fan, QIN Na, NIU Jian-di, ZHENG Liang
School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China
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摘要：

为了研究固结磨粒磨具的磨料粒度对旋转超声磨削钛合金磨削力的影响，采用随机空间平面切割正六面体的方法构建了具有实际磨粒几何特征的不规则多面体磨粒，并基于虚拟格子法建立了磨粒在磨具端面随机分布的多颗磨粒磨具模型。使用Deform-3D软件构建了三维旋转超声磨削钛合金有限元模型，采用拉格朗日增量算法获得了多颗磨粒磨具旋转超声磨削钛合金Ti6Al4V的磨削力仿真值，得到了磨料粒度对磨削力的影响规律，并通过试验进行了验证。结果表明，旋转超声磨削钛合金磨削力随着磨料粒度的增大而减小，且试验结果和仿真结果具有一致性，说明了多颗磨粒磨具模型、旋转超声磨削有限元模型具有一定的准确性，为多颗磨粒磨具旋转超声磨削的相关研究提供了新的方法。
关键词： 多颗磨粒;  虚拟格子法;  旋转超声磨削;  钛合金;  有限元分析    
Abstract:

In order to study the effects of the abrasive grain size of core tool on grinding force in rotary ultrasonic grinding titanium alloy, abrasive grain in the shape of irregular polyhedron was modeled by cutting regular hexahedron with random interception plane on a hexahedron. Based on virtual grid method, a simulation model of core drill with multi abrasive grains randomly distributing on the end face of tool was built. A 3D finite element model of rotary ultrasonic grinding of titanium alloy was developed by using Deform-3D. The simulation value of grinding force in rotary ultrasonic grinding of titanium alloy Ti6Al4V with multi abrasive grains was obtained by Lagrangian incremental algorithm, and the effects of the abrasive grain size on grinding force was investigated. A series of experiments were conducted to validate the grinding force in rotary ultrasonic grinding of titanium alloy. The result proved that rotary ultrasonic grinding force decreased as abrasive grain size increased and the experimental result agreed well with the simulation result. The result shows that the multi abrasive grain tool model and the finite element model of rotary ultrasonic grinding have certain accuracy. A new way for multi abrasive grain tool relational investigation in rotary ultrasonic grinding has been provided.
Key words: multi abrasive grain    virtual grid method    rotary ultrasonic grinding    titanium    finite element analysis
收稿日期: 2016-08-04 出版日期: 2017-04-28
CLC:  TH161.14  
基金资助:

国家自然科学基金资助项目（51305369）；中国博士后科学基金资助项目（2012M521708）；高等学校博士学科点专项科研基金新教师类课题（20130184120007）；中央高校基本科研业务费专项资金资助项目（SWJTU11CX023）；教育部重点实验室开放式基金资助项目（JMTZ201605）
通讯作者: 秦娜,女,四川眉山人,讲师,硕士生导师,博士,从事旋转超声加工研究,E-mail:tinaspirit@home.swjtu.edu.cn     E-mail: tinaspirit@home.swjtu.edu.cn
作者简介: 刘凡(1991-),男,湖北孝感人,硕士生,从事旋转超声加工研究,E-mail:liufan_swjtu@126.com,http://orcid.org//0000-0001-6282-8258
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引用本文:

刘凡, 秦娜, 牛健地, 郑亮. 旋转超声磨削钛合金有限元仿真与试验研究[J]. 工程设计学报, 2017, 24(2): 162-167.

LIU Fan, QIN Na, NIU Jian-di, ZHENG Liang. Finite element simulation and experimental research on rotary ultrasonic grinding of titanium alloy[J]. Chinese Journal of Engineering Design, 2017, 24(2): 162-167.

链接本文:

https://www.zjujournals.com/gcsjxb/CN/10.3785/j.issn.1006-754X.2017.02.006    或    https://www.zjujournals.com/gcsjxb/CN/Y2017/V24/I2/162

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