CFRP螺旋铣孔成屑机制的三维微观有限元仿真研究

doi:10.11896/cldb.23110010

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Abstract The instantaneous cutting characteristics of interactions between cutter and the carbon fiber reinforced phase, matrix and the interface phase can’t be reflected only by macro-scale studying of cutting force variation, residual stress distribution and fracture mechanism of carbon fiber reinforced plastic/polymer (CFRP) during helical milling process. In this work, based on the principle of helical milling kinematics, a three-dimensional micro-scale finite element cutting model of chip forming process in helical milling of CFRP was established by using the orthogonal cutting method. Analyzed the influence rules of cutting speed and cutting depth on cutting force, residual stress and fracture behavior of fiber orientation of CFRP with different fiber orientations θ (0°, 45°, 90°, 135°), finally revealed the chip formation mechanisms of helical milling for CFRP. The results showed that: when θ=90°, the peripheral cutting force wasn’t affected by cutting speed and cutting depth with its maximum increment. when the cutting depth was constant, the minimum force increment was obtained with θ=0°; and when the cutting speed was constant, the minimum force increment was obtained with θ=45°. When θ=0°, 45° and 135°, the residual stress wasn’t affected by the cutting depth, the resi-dual stress was distributed on the machined surface with θ=0° and 135°, when θ=45°, the residual stress converged below the machined surface; when θ=90°, the residual stress extended all the workpiece with the increase of cutting depth. The fracture behavior of CFRP with θ=0° and 45° was resulted from shear fracture and bend fracture; when θ=90° and θ=135°, it was dominated by shear and bend fracture, respectively.

Key words： CFRP helical milling RVE model fiber orientation θ fracture behavior

Published: 25 December 2024 Online: 2024-12-20

CLC number:

TB332

Fund:National Natural Science Foundation of China(52265049),and Gansu Provincial Youth Doctoral Fund(2021QB-043).

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	Articles by authors
	ZHOU Lan
	LI Guangqi
	AN Guosheng
	WANG Yunlong
	ZHU Ruibiao
	ZHONG Yun

Cite this article:

ZHOU Lan,LI Guangqi,AN Guosheng, et al. Three-dimensional Micro-scale Finite Element Simulation Study on Chip Formation Mechanism of CFRP Helical Milling[J]. Materials Reports, 2024, 38(24): 23110010-7.

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http://www.mater-rep.com/EN/10.11896/cldb.23110010 OR http://www.mater-rep.com/EN/Y2024/V38/I24/23110010

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