期刊
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
卷 84, 期 9-12, 页码 1927-1939出版社
SPRINGER LONDON LTD
DOI: 10.1007/s00170-015-7782-y
关键词
Finite element method; Small-hole drilling; 3D numerical simulation; AISI 1045
资金
- National Key Projects of Science and Technology of China [2012ZX04003051-3]
This paper studies the three-dimensional finite element (FE) modeling for simulating the small-hole drilling process of AISI 1045 by using FE package Abaqus/Explicit. The large deformation of work and the chip formation in drilling process is realized by incorporating Johnson-Cook material constitutive model and material failure criterion. In order to verify the simulation model, the simulation and corresponding drilling tests are performed for the drilling process with 3-mm diameter solid carbide drills at several combination groups of rotational speeds and feed velocities. The estimated thrust force, torque and chip morphology from the simulation are in good agreement with those tested from experiments. The combination of both simulations and experiments not only reveals obvious varying pattern of thrust force, torque with the increasing of rotational speeds and feed velocities, which is consistent with the cutting theory, but also provides a more detailed and profound knowledge about the cutting mechanism including the contribution of chisel edge, drilling stage, and stress and strain distribution, which is assumed to be helpful for the optimization of the drill structure, geometry and drilling parameters.
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