CFRP钻削温度场的数值仿真与分析

文摘为研究碳纤维增强树脂基复合材料(CFRP)钻削过程传热规律及温度分布特性,在对材料热物理特性均匀化处理的基础上,利用COMSOL Multiphysics建立单向CFRP钻削温度场数值仿真模型,探究钻削过程中热量传递及温度场分布规律。结果表明,出口处温度场呈椭圆形分布状态,椭圆形最小值离心率e为0.771,且椭圆的长轴和纤维方向平行。通过实验对比,纤维方向和垂直纤维方向的温度误差分别为7.5%和7.8%,实验结果验证了数值仿真模型的正确性。

Numerical Simulation and Analysis of Unidirectional CFRP Drilling Temperature Field

In order to study the heat transfer rule and temperature distribution characteristics of carbon fiber reinforced polymer (CFRP) during drilling were studied .the heat transfer rule and temperature field distribution in unidirectional CFRP drilling were studied by homogenizing the material thermal physical properties and establishing the numerical simulation model of unidirectional CFRP drilling temperature field by COMSOL multiphysics.The investigation revealed that the temperature field at the outlet is elliptical, the minimum eccentricity e is 0.771, and the long axis of the ellipse is parallel to the fiber direction.?The experimental results show that the temperature errors of fiber direction and vertical fiber direction are 7.5% and 7.8% ,respectively, and the simulation results were in good agreement with the experimental results, which verifies the correctness of the numerical simulation model.