氧化铝陶瓷磨削用砂轮形貌建模与表面粗糙度仿真  

Research on Grinding Wheel Modeling Method and Finite Element Simulation

作　　者：宿崇[1] 郭品方 SU Chong;GUO Pinfang(School of Mechanical Engineering,Dalian Jiaotong University,Dalian 116028,China;Taiyuan North Train Depot,Daqin Railway Co.,Ltd.,Taiyuan 030003,China)

机构地区：[1]大连交通大学机械工程学院,辽宁大连116028 [2]大秦铁路股份有限公司太原北车辆段,山西太原030003

出　　处：《大连交通大学学报》2024年第6期26-33,共8页Journal of Dalian Jiaotong University

基　　金：国家重点研发计划项目(2020YFB2007804);大连市揭榜挂帅科技攻关项目(2021JB12GX014)。

摘　　要：根据金刚石砂轮磨料的粒度、浓度以及磨粒位置随机分布特征,研究了金刚石砂轮表面形貌建模方法,建立了浓度为100%,粒度分别为80/100、170/200、325/400的3种金刚石砂轮表面形貌模型。采用JH-2模型描述氧化铝陶瓷材料的本构行为,利用3种砂轮地貌模型进行了不同工艺参数下的氧化铝陶瓷磨削有限元仿真分析。通过有限元模型网格节点分析氧化铝陶瓷有限元网格模型加工后表面形貌,根据仿真中氧化铝陶瓷的去除形式以及磨削后的表面形貌特征,分析了金刚石砂轮形貌和磨削深度对氧化铝陶瓷材料磨削表面粗糙度的影响,验证了此种氧化铝陶瓷磨削有限元仿真分析方法的可行性。Based on the random distribution characteristics of diamond abrasive grain size, concentration, and grain position on grinding wheels, a study was conducted on surface topography modeling methods for diamond grinding wheels. Surface topography models were established for three diamond grinding wheels with concentrations of 100% and grain sizes of 80/100, 170/200, and 325/400 respectively. The JH-2 model was employed to describe the constitutive behavior of alumina ceramic materials. Finite element simulations of alumina ceramic grinding were performed using the three grinding wheel topography models under different process parameters. Surface topography of the machined alumina ceramic finite element mesh models was analyzed by examining nodes of the finite element model grid. Based on the removal forms of alumina ceramics and the surface topography characteristics after grinding observed in simulations, the influence of diamond wheel topography and grinding depth on the surface roughness of alumina ceramic materials was analyzed. This study validated the feasibility of the finite element simulation analysis method for alumina ceramic grinding.

关 键 词：砂轮建模 氧化铝陶瓷 有限元仿真 

分 类 号：TQ174.6[化学工程—陶瓷工业]