Finite Element Modeling of Edge Trimming Fiber Reinforced Plastics

[+] Author and Article Information
D. Arola, M. B. Sultan

Department of Mechanical Engineering, University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, MD 21250

M. Ramulu

Department of Mechanical Engineering, University of Washington, Box 352600, Seattle, WA 98195

J. Manuf. Sci. Eng 124(1), 32-41 (Dec 01, 2000) (10 pages) doi:10.1115/1.1428329 History: Received December 01, 1999; Revised December 01, 2000
Copyright © 2002 by ASME
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Cutting tool stress distribution determined from the finite element analysis (a) variation in tool stress for a 10 deg α/17 deg γ cutting tool with respect to fiber orientation (b) effects of tool rake angle on the stress distribution
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Geometric features of chip formation in edge trimming of FRPs with positive fiber orientations (a) schematic diagram of discontinuous chip formation (b) primary fracture length distinguished from experiments [Arola et al., 1996]
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Schematic diagrams and terminology associated with a discrete chip (a) workpiece and boundary conditions (b) primary and secondary fracture planes (c) fracture criterion
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Deformation and chip release in trimming the 75 deg unidirectional Gr/Ep with a 10 deg α/17 deg γ cutting tool (a) tool displacement and deformation in the workpiece near the tool nose (b) fully formed chip
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Cutting force history resulting from trimming unidirectional Gr/Ep with a 10 deg α/17 deg γ cutting tool (a) 60 deg unidirectional Gr/Ep (b) 90 deg unidirectional Gr/Ep
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Verification of the numerical model with experimental results for orthogonal cutting of Gr/Ep (α=10 deg,γ=17 deg) (a) principal cutting force (b) thrust force
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Effects of changing the tool rake angle on principal cutting forces
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The stress distribution in the nose of a 10 deg α/17 deg γ cutting tool resulting from trimming 75 deg unidirectional Gr/Ep (a) effective stress distribution (b) maximum principal stress distribution (c) maximum compressive stress distribution
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Sub-surface damage caused by transverse normal stresses in edge trimming unidirectional Gr/Ep with orthogonal cutting tools (a) definitions for damage (example results from σ22 in edge trimming 60 deg unidirectional Gr/Ep with a 10 deg α/17 deg γ cutting tool) (b) damage distribution with respect to fiber orientation and tool geometry



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