PW-CFRP弹性性能预测及三维钻削仿真  

Elastic performance prediction and 3D drilling simulation of PW-CFRP

作　　者：周强[1] 陈燕[1] 王晓宇 张川川 陈雪梅 刘元吉 陈清良 勾江洋 ZHOU Qiang;CHEN Yan;WANG Xiaoyu;ZHANG Chuanchuan;CHEN Xuemei;LIU Yuanji;CHEN Qingliang;GOU Jiangyang(College of Mechanical&Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Chengdu Aircraft Industrial(Group)Co.,Ltd.,Chengdu 610092,China)

机构地区：[1]南京航空航天大学机电学院,南京210016 [2]成都飞机工业(集团)有限责任公司,成都610092

出　　处：《金刚石与磨料磨具工程》2023年第5期592-603,共12页Diamond & Abrasives Engineering

基　　金：国家自然科学基金(51875284)。

摘　　要：平纹编织结构碳纤维增强树脂基复合材料(plain-woven carbon fiber-reinforced plastic,PW-CFRP)展现出高损伤容限特性,在航空航天领域应用广泛。针对PW-CFRP钻削仿真中由于其材料弹性性能变化导致单一尺度钻削仿真难以体现实际钻削力的问题,研究其弹性性能预测及多尺度三维钻削仿真。基于周期性边界条件的弹性性能参数预测模型,利用预测的材料弹性性能参数,采用多尺度有限元方法,仿真PWCFRP的三维钻削并开展试验验证。研究结果表明:基于周期边界条件的有限元法能准确预测编织复合材料的弹性常数;在剪切载荷下,其编织单胞的边界面均由平面变成曲面,发生凸凹翘曲变形;基于刚度预测模型基础的PW-CFRP三维钻削仿真模型能够准确预测制孔过程中的轴向力、扭矩;在相同工艺参数下,制孔轴向力和扭矩的仿真预测与试验结果相对误差分别为14.2%和8.5%。Plain-woven carbon fiber-reinforced plastic(PW-CFRP)exhibits high damage tolerance and is widely used in the aerospace field.To address the issue that single-scale drilling simulation is difficult to reflect the practical drilling force due to the change in material elastic properties in PW-CFRP drilling simulation,this paper studies the prediction of elastic properties of PW-CFRP and multi-scale three-dimensional drilling simulation.Based on the prediction model of elastic performance parameters with periodic boundary conditions,the three-dimensional drilling simulation of PWCFRP is carried out using the predicted material elastic performance parameters and the multi-scale finite element method,with experimental verification.The results show that the finite element method based on periodic boundary conditions can accurately predict the elastic constants of braided composites.For the woven unit cell,its boundary surface changes from plane to surface under shear load,and convex-concave warping deformation occurs.The PW-CFRP threedimensional drilling simulation model,based on the stiffness prediction model,can accurately predict the axial force and torque during the drilling process.Under the same process parameters,the maximum relative errors between the simulation prediction and the experimental results of the drilling thrust force and torque are 14.2%and 8.5%,respectively.The multi-scale drilling simulation of PW-CFRP,from microscopic to mesoscopic to macroscopic,is realized.

关 键 词：CFRP 周期性边界条件 多尺度分析 弹性常数 钻削仿真 

分 类 号：TB58[理学—物理] TB332[理学—声学]