Carbon fiber reinforced polymer(CFRP)composites,as a typical difficult-to-machine material,exhibit high cutting forces and temperatures during actual machining,leading to more severe tool wear compared to traditional ...Carbon fiber reinforced polymer(CFRP)composites,as a typical difficult-to-machine material,exhibit high cutting forces and temperatures during actual machining,leading to more severe tool wear compared to traditional metal ma-terials.The shear fracture during fiber cutting is incomplete,resulting in surface defects such as unclosed fibers and burrs.To analyze the cutting forces and tool wear areas when cutting CFRP with different fiber angles,a three-dimensional or-thogonal cutting model of CFRP was established using finite element software and the VUMAT subroutine,based on the three-dimensional Hashin criterion.Simulation results show that during the cutting process of CFRP,high-stress areas appear in the region where the cutting edge contacts the workpiece for each fiber orientation,primarily concentrated in the first deformation zone in contact with the cutting edge.The Mises stress is highest when cutting the 90°fibers and lowest when cutting the 0°fibers.When cutting the 0°and 135°fibers,the tool is prone to wear on both the rake and flank faces,while when cutting the 45°and 90°fibers,the tool's rake face is more likely to experience wear.展开更多
文摘Carbon fiber reinforced polymer(CFRP)composites,as a typical difficult-to-machine material,exhibit high cutting forces and temperatures during actual machining,leading to more severe tool wear compared to traditional metal ma-terials.The shear fracture during fiber cutting is incomplete,resulting in surface defects such as unclosed fibers and burrs.To analyze the cutting forces and tool wear areas when cutting CFRP with different fiber angles,a three-dimensional or-thogonal cutting model of CFRP was established using finite element software and the VUMAT subroutine,based on the three-dimensional Hashin criterion.Simulation results show that during the cutting process of CFRP,high-stress areas appear in the region where the cutting edge contacts the workpiece for each fiber orientation,primarily concentrated in the first deformation zone in contact with the cutting edge.The Mises stress is highest when cutting the 90°fibers and lowest when cutting the 0°fibers.When cutting the 0°and 135°fibers,the tool is prone to wear on both the rake and flank faces,while when cutting the 45°and 90°fibers,the tool's rake face is more likely to experience wear.
