banner.jpg 031 Modeling of Micro Drill Dynamics Based on 2-D Finite Element Method Xiaoliang Jin and Narahara Gopal Koya School of Mechanical and Aerospace Engineering, Oklahoma State University, Stillwater, Oklahoma, United States ABSTRACT

This paper models the coupled torsional-axial dynamics of the micro drill due to pre twisted flute geometry. 2-D finite element method is used to obtain the warping constants considering the actual geometry of drill cross section. Natural frequencies and frequency response function of torsional-axial coupled vibration is obtained for the flute section of micro drill. The results are compared with the simulations from commercial FE software.

Keywords: Micro Drill, Coupled torsional-axial dynamics, Pre twisted flute geometry, 2-D finite element method.

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