摘要
玻璃纤维增强树脂基复合材料(Glass fiber reinforced plastic,GFRP)具有比强度高和比模量大等特点,广泛应用于航空航天、船舶军工和汽车制造等领域。针对GFRP复合材料制孔加工中容易出现分层、撕裂等缺陷,采用旋转超声振动套孔加工方法对其进行磨削制孔的理论和试验研究。分析了旋转超声振动套孔加工中单颗磨粒的运动学特性,基于Hashin失效准则,对GFRP复合材料最具代表性的0°和90°角度铺层玻璃纤维进行磨削常规和旋转超声振动套孔加工有限元仿真研究。相较于常规加工,超声振动加工使磨粒具有周期性动态冲击磨削效果,改变了材料的去除方式,降低了磨削力,结果表明:超声振动加工的轴向力最大降幅可达20.1%,同时有效抑制了出口分层缺陷,孔壁表面的纤维断口光滑平整,制孔质量得到有效改善。
Glass fiber reinforced resin matrix composites(Glass fiber reinforced plastic,GFRP)have the characteristics of high specific strength and large specific modulus,and are widely used in aerospace,shipbuilding and automobile manufacturing and other fields.Aiming at the defects such as delamination and tearing that are prone to occur in the hole-making process of GFRP composites,the theoretical and experimental researches on grinding and hole-making are carried out by using the rotary ultrasonic vibration hole-making method.The kinematics of single abrasive particles in rotary ultrasonic vibration casing machining were analyzed.Based on Hashin failure criterion,the most representative 0°and 90°angle lay-up glass fibers of GFRP composites were ground by conventional and rotary ultrasonic vibration.Finite element simulation research of casing drilling;compared with conventional machining,ultrasonic vibration machining makes abrasive particles have periodic dynamic impact grinding effect,changes the material removal method,and reduces the grinding force.The results show that:the shaft of ultrasonic vibration machining The maximum drop in the axial force can reach 20.1%,and at the same time,the delamination defect at the outlet is effectively suppressed,the fiber fracture on the surface of the hole wall is smooth and smooth,and the quality of the hole making is effectively improved.
作者
郑雷
孙晓晗
吕冬明
刘子文
朱卓志
董香龙
韦文东
ZHENG Lei;SUN Xiaohan;LüDongming;LIU Ziwen;ZHU Zhuozhi;DONG Xianglong;WEI Wendong(School of Mechanical Engineering,Changshu Institute of Technology,Changshu 215500;School of Mechanical Engineering,Yancheng Institute of Technology,Yancheng 224051;Education and Development Center of Mechanical Industry,Beijing 100055)
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2023年第23期391-400,共10页
Journal of Mechanical Engineering
基金
江苏省自然科学基金面上(BK20201474)
江苏省高等学校基础科学(自然科学)研究重大(22KJA460009)
国家自然科学基金面上(51575470)资助项目。
关键词
旋转超声加工
金刚石套料钻
有限元分析
GFRP
制孔质量
rotary ultrasonic machining
diamond trepanning bit
finite element analysis
GFRP
hole quality
作者简介
通信作者:郑雷,男,1976年出生,博士,教授,硕士研究生导师。主要研究方向为高效精密加工技术、先进制造技术及装备。E-mail:alei611@163.com。
