Browse > Article
http://dx.doi.org/10.9725/kstle.2006.22.4.190

Thermal Property Analysis of 40 mm Long Hollow Cylinders Though Measurements and Analysis of Transient Temperatures  

Shin Nae-Ho (Korea Military Academy)
Chung Dong-Yoon (Korea Military Academy)
Oh Myoung-Ho (Korea Military Academy)
Yoo Sam-Hyeon (Korea Military Academy)
Nam Seok-Ryun (Agency for Defence Development, Rep. of Korea)
Publication Information
Tribology and Lubricants / v.22, no.4, 2006 , pp. 190-195 More about this Journal
Abstract
A simple and effective analysis method is presented for gaining a complete transient temperatures on the internal and external surfaces of a 40 mm gun tube subjected to a series of rapid firings. Two series of temperature data for both Hs and As were measured by using two rapid response k-type surface thermocouples near the firing origin and the muzzle. With other available temperature data, patterns of temperature variations of the gun tube as a function of time variable were driven through complete evaluations of the data. It is found that overall temperature gradients which increase exponentially toward saturation temperature, actually consist of a series of linear temperature gradients corresponding to the firing sequences. Under the similar firing sequences, patterns of temperature variations fur both the surface temperatures near the chamber and those near the muzzle were found to have linear temperature gradients with different values and the same response frequencies, i.e. they had peaks and lows in temperatures at the same time. The resultant complete temperature data can be used as the fundamental bases for analysis of thermoelastic properties of the materials such as thermal strain and stress, and f3r the prediction of cannon tube life-time through calculation of wear rate.
Keywords
gun barrel; wear; temperature of barrrel; temperature gradient; heat input;
Citations & Related Records
연도 인용수 순위
  • Reference
1 H. Vollbrecht, 'Stress in Cylindrical and Spherical Walls Subjected to Internal Pressure and Stationary Heat Flow,' Verfahrenstechnik Vol. 8, pp. 109-12, 1974
2 T. Yoitiro and N. Naotake, 'The Effects of Dynamical treatment of Thermal Stress on a Circular Region due to Continuous Point Heat Source,' Int. Journal of Eng. Sci., Vol. 12,pp.261-271, 1974   DOI   ScienceOn
3 X. Wang, 'Thermal Shock in a Hollow Cylinder Caused by Rapid Arbitrary Heating,' J. of Sound and Vibration, Vol. 183, No.5, pp. 899-906, 1995
4 S. T. Stasynk, V. I. Gromovjk and A. L. Bichuya, 'Thermal-stress Analysis of Hollow Cylinder with Temperarure-dependent,' Translated in: Strength of Materials, Vol. 11, No.1, pp. 50-52, Sep. 1979   DOI
5 I. A. Johnston, 'Understanding and Predicting Gun Barrel Erosion,' DSTO- TR-1757, Weapons Systems Division, DOD, Australian Government, Aug., 2005
6 C. E. Moeller and A. J. Bossert, 'Measurement of Transient Bore-Surface temperatures in 7.62 mm Gun Tubes,' R-RR-1-81-73, Rock Island Arsenal, Nov. 1973
7 C. W. Nelson and J. R. Ward, 'Calculation of Heat Transfer to the Gun Barrel Wall,' ARBRL-MR-03094, USA Ballistic Research Laboratory, Mar. 1981
8 http://www.navweaps.com/Weapons/WNSweden_4 cm-70_m 1948.htm
9 S. A. R. Naga, 'Optimum working Conditions in Thick Walled Cylinders,' J. Eng. Mater. Technol. Trans. ASME, Vol. 108, pp. 374-7, 1986   DOI   ScienceOn
10 D. Y. Chung and M. Oh, 'New Empirical Method to Enhance the Accuracy in the Erosion Prediction of Cannon Tube,' Wear, Vol. 255, pp. 98-101, 2003   DOI   ScienceOn
11 V. N. Zukhova and P. G Pimshtein, 'Thermally Stressed State of a Laminnated Cylinder exposed to Internal Pressure and Steady-state External Heating,' Sov. Appl. Mech., Vol. 25, pp. 808-13, 1990   DOI
12 S. T. Stasynk, V. I. Gromovjk and A. L. Bichuya, 'Thermal-stress Analysis of Hollow Cylinder with Temperarure-dependent,' Acad. of Sci. of the Ukrainian SSR, LVOV USSR, Vol. 11, No. 1, pp. 41-43, Jan. 1979
13 J. Moffat, 'Complexity Theory,' Sept., 2003, CCRP