基于三维数值模拟的CFRP直角和斜角切削成屑机理与损伤深度分析
Analysis of Chip Formation Mechanism and Damage Depth in CFRP Right Angle and Oblique Angle Cutting Based on Three-Dimensional Numerical Simulation
高汉卿1
作者信息
- 1. 宁德时代新能源科技股份有限公司,宁德 352100
- 折叠
摘要
碳纤维增强树脂基复合材料(Carbon Fiber Reinforced Plastic,CFRP)切削时极易出现损伤.开展CFRP的直角切削模拟是揭示材料损伤形成机制的有效手段.但是,CFRP钻、铣削加工时,刀具作用在材料上的载荷与直角切削不同,其中切削刃对材料的作用与斜角切削更加接近.因此,建立基于线弹性本构、Hashin失效准则及渐进损伤演化准则的CFRP三维直角切削和斜角切削仿真模型,模拟CFRP的斜角切削过程,并与直角切削进行对比.结果表明,直角和斜角切削时,面下损伤都随纤维角度的增大而增大;切削 135°纤维角度的CFRP时,面下损伤扩展的长度较长,且斜角切削产生的损伤深度比直角切削大.
Abstract
Carbon Fiber Reinforced Plastic(CFRP)are prone to damage during cutting,and conducting its right angle cutting simulation is an effective means to reveal the mechanism of material damage formation.However,during CFRP drilling and milling,the load acting on the material by the cutting tool is different from that of right angle cutting,and the effect of the cutting edge on the material is closer to that of oblique angle cutting.Therefore,this article establishes a three-dimensional CFRP right angle cutting and oblique cutting simulation model based on linear elastic constitutive law,Hashin failure criterion,and progressive damage evolution criterion,simulating the oblique cutting process of CFRP and comparing it with right angle cutting.The results show that The damage under the surface increases with the increase of fiber angle during right angle and oblique angle cutting;When cutting CFRP with a fiber angle of 135 °,the length of damage propagation under the surface is longer,and the depth of damage generated by oblique cutting is greater than that of right angle cutting.
关键词
碳纤维增强树脂基复合材料(CFRP)/有限元仿真/面下损伤Key words
Carbon Fiber Reinforced Plastic(CFRP)/finite element simulation/subfacial damage引用本文复制引用
出版年
2024
NETL
NSTL
万方数据