旋转超声磨削钛合金有限元仿真与试验研究
发布时间：2018-12-09 15:43
【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。
[Abstract]:In order to study the effect of abrasive particle size on grinding force of titanium alloy by rotary ultrasonic grinding, irregular polyhedron abrasive particles with geometric characteristics of real abrasive particles were constructed by random space plane cutting hexahedron method. Based on the virtual lattice method, a model of multiple abrasive tools with random distribution of abrasive particles on the end surface of abrasive tools is established. The finite element model of 3D rotary ultrasonic grinding of titanium alloy was constructed by using Deform-3D software. The grinding force simulation value of Ti6Al4V was obtained by using Lagrange increment algorithm. The effect of abrasive particle size on grinding force is obtained and verified by experiments. The results show that the grinding force decreases with the increase of abrasive particle size, and the experimental results are consistent with the simulation results. The finite element model of rotary ultrasonic grinding has certain accuracy, which provides a new method for the research of rotary ultrasonic grinding of multiple abrasive tools.
【作者单位】： 西南交通大学机械工程学院;
【基金】：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)
【分类号】：TG580.6
[Abstract]:In order to study the effect of abrasive particle size on grinding force of titanium alloy by rotary ultrasonic grinding, irregular polyhedron abrasive particles with geometric characteristics of real abrasive particles were constructed by random space plane cutting hexahedron method. Based on the virtual lattice method, a model of multiple abrasive tools with random distribution of abrasive particles on the end surface of abrasive tools is established. The finite element model of 3D rotary ultrasonic grinding of titanium alloy was constructed by using Deform-3D software. The grinding force simulation value of Ti6Al4V was obtained by using Lagrange increment algorithm. The effect of abrasive particle size on grinding force is obtained and verified by experiments. The results show that the grinding force decreases with the increase of abrasive particle size, and the experimental results are consistent with the simulation results. The finite element model of rotary ultrasonic grinding has certain accuracy, which provides a new method for the research of rotary ultrasonic grinding of multiple abrasive tools.
【作者单位】： 西南交通大学机械工程学院;
【基金】：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)
【分类号】：TG580.6
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