基于热力耦合的CFRP材料钻孔表面损伤仿真分析  

Simulation Analysis of Surface Damage in Drilling of CFRP Materials Based on Thermal Coupling

作　　者：徐兰英 张丽冰 张心语 陈韵滨 XU Lanying;ZHANG Libing;ZHANG Xinyu;CHEN Yunbin(School of Mechatronic Engineering,Guangdong Polytechnic Normal University,Guangzhou Guangdong 510665)

机构地区：[1]广东技术师范大学机电学院,广东广州510665

出　　处：《广东技术师范大学学报》2024年第6期1-7,共7页Journal of Guangdong Polytechnic Normal University

基　　金：广东省自然科学基金(2022A1515011065)博士点建设单位科研能力提升项目(22GPNUZDJS21)。

摘　　要：碳纤维增强塑料(CFRP)广泛应用于航空航天、汽车制造及海洋工程等领域,其在钻削加工过程中孔表面容易遭受损伤.为探究钻削工艺参数对CFRP钻孔表面损伤的影响机理,运用ABAQUS仿真软件,通过调节麻花钻钻头转速与进给速度,对CFRP材料的钻削过程进行有限元仿真,分析钻头转速、进给速度与材料应力分布、温度变化趋势及表面分层损伤的关联性.仿真结果显示:提升主轴转速与进给速度会增加钻头轴向力与扭矩,会加剧材料内部应力波动状态,影响孔壁加工质量;同时钻削区域温度随转速与进给速度的增大而上升,引起材料的热分解反应或诱发热应力损伤;钻孔出入口区域分层损伤加剧,更易在钻削力与钻削热的共同作用下发生破坏.研究结论为优化钻削工艺参数提供可靠的参考依据.Carbon fiber reinforced plastic(CFRP)is widely used in aerospace,automotive manufacturing,and marine engineering.During the drilling process,the hole surface is prone to damage.To explore the mechanism of drilling process parameters on the surface damage of CFRP drilling,ABAQUS simulation software was employed.By adjusting the drill speed and feed rate of the twist drill,a finite element simulation of the CFRP drilling process was conducted.The relationship between drill speed,feed rate,material stress distribution,temperature variation trends,and surface delamination damage was analyzed.The simulation results show that increasing the spindle speed and feed rate enhances the axial force and torque of the drill,exacerbates the internal stress state of the material,and affects the hall wall machining quality.At the same time,the temperature in the drilling area rises with the increase in rotation speed and feed rate,which may lead to thermal decomposition reactions in the material or induce thermal stress damage..Delamination damage in the entry and exit areas of the hole is exacerbated,making it more susceptible to failure under the combined effects of cutting force and cutting heat.The research conclusions provide reliable reference data for optimizing drilling process parameters.

关 键 词：碳纤维增强塑料 热力耦合 表面损伤 有限元仿真 

分 类 号：TB322[一般工业技术—材料科学与工程]