International Scientific Journal

Thermal Science - Online First

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Prediction of the temperature of a drill in drilling lunar rock simulant in a vacuum

In this article, the temperature of a sampling drill in drilling lunar rock simulant in a high-vacuum environment was studied. The thermal problem was viewed as a one dimensional transient heat transfer problem in a semi-infinite object. The simplified drill was modeled using heat conduction differential equation and a fast numerical calculation method is proposed on this basis, with time and the drill discretized. The model was modified to consider the effects of radiation, drill bit configuration, and nonconstant heat source. A thermal analysis was conducted using ANSYS Workbench to determine the value of the equivalent correction coefficient proposed in this paper. Using fiber Bragg grating temperature measurement method, drilling experiments were conducted in a vacuum, and the results were compared to the model. The agreement between model and experiment was very good.
PAPER REVISED: 2015-04-15
PAPER ACCEPTED: 2015-04-15
  1. Cremers C., et al., Thermal Conductivity of Fines from Apollo 11, Proceedings, the Apollo 11 Lunar Science Conference, Houston, USA, 1970, Vol 1, pp. 2045-2050.
  2. Keihm S., Langseth M., Surface Brightness Temperatures at the Apollo 17 Heat Flow Site: Thermal Conductivity of the Upper 15cm Regolith, Proceedings, the Fourth Lunar Science Conference, Houston, USA, 1973, Vol 1, pp. 2503-2513.
  3. Devries M. F., et al., Temperature Distributions in Drilling, Journal of Engineering for Industry, 90 (1968), 2, pp. 231-238.
  4. Saxena U. K., et al., Drill Temperature Distributions by Numerical Solutions, Journal of Engineering for Industry, 93 (1971), 4, pp. 1057-1066.
  5. Watanabe K., et al., Thermal Analyses of the Drilling Process, Bull. Japan Soc. Prec. Eng. 11 (1977), 2, pp. 71-77.
  6. Agapiou J. S., et al., On the Determination of Thermal Phenomena during a Drilling Process-Part I, Analytical Models of Twist Drill Temperature Distributions, Int. J. Mach. Tools Manuf., 30 (1990), 2, pp. 203-215.
  7. Agapiou J. S., Stephenson D. A., Analytical and Experimental Studies of Drill Temperatures, Journal of Manufacturing Science and Engineering, 116 (1994), 1, pp. 54-60.
  8. Fuh K. H., et al., Temperature Rise in Twist Drills with a Finite Element Approach, International Communications in Heat and Mass Transfer, 21 (1994), 3, pp. 345-58.
  9. Bono M., Ni J., A Method for Measuring the Temperature Distribution along the Cutting Edges of a Drill, Journal of Manufacturing Science and Engineering, 124 (2002), 4, pp. 921-923.
  10. Bono M., Ni J., The Location of the Maximum Temperature on the Cutting Edges of a Drill, International Journal of Machine Tools & Manufacture, 46 (2006), 7, pp. 901-907.
  11. Li R., Shih A. J., Tool Temperature in Titanium Drilling, Journal of Manufacturing Science and Engineering, 129 (2007), 4, pp. 740-749.
  12. Wu J., Han R.D., A new Approach to Predicting the Maximum Temperature in Dry Drilling Based on a Finite Element Model, Journal of Manufacturing Processes,11 (2009), 1, pp. 19-30.
  13. de Sousa P., et al, Estimation of Heat Flux and Temperature Field during Drilling Process Using Dynamic Observers Based on Green's Function, Applied Thermal Engineering, 48 (2012), 15, pp. 144-154.
  14. Nedic, B. P., et al., Cutting Temperature Measurement and Material Machinability, Thermal Science, 18 (2014), Suppl. 1, pp. S259-S268.
  15. Hou X. Y., et al., Thermal Test of Lunar Rock Drill Bit in Vacuum Environment, Applied Mechanics and Material,. 475 (2014), pp. 38-44
  16. Holman J.P., Heat Transfer, eighth ed., McGraw-Hill, New York, USA, 1997.
  17. Cui J. S., et al., Experimental Research on Temperature Rise of Bit in Drilling Normal and Low Temperature Lunar Soil Simulant, Applied Mechanics and Materials, 373 (2013), pp. 2008-2014.
  18. Nishimatsu Y., The Mechanics of Rock Cutting, International Journal of Rock Mechanics and Mining Sciences, 9 (1972), 2, pp. 261-270.
  19. Franca L, A Bit-rock Interaction Model for Rotary-percussive Drilling, International Journal of Rock Mechanics and Mining Sciences, 48 (2011), 5, pp. 827-835.
  20. Liu H. Y., et al., Numerical Simulation of the Fracture Process in Cutting Heterogeneous Brittle Material, Int. J. Numer. Anal. Methods Geomech., 26 (2002), 13, pp. 1253-1278.
  21. Villeneuve M. C., et al., Effects of Grain Scale Heterogeneity on Rock Strength and the Chipping Process, International Journal of Geomechanics, 12 (2012), 6, pp. 632-647.