"It is generally believed that the spacing of simultaneously initiated collar primed multiple charges is not dependent on the charge length. The stresses generated by explosive charges have been assumed to propagate through a material in a cylindrical manner. this assumption implied that the stress generated in any plane along the charge diameter would have been uniform in magnitude and direction. A finite explosive velocity along with a conical stress wave causes the stresses near the collar to differ from those farther down the column. for this reason, the spacing of charges would be dependent on charge length. An experimental technique using models was employed to investigate charge length and other spacing parameters. materials with different properties were selected as models for the purpose of determinating to what extent material's properties influenced the spacing. This investigation showed that charge length was of extreme importance in the spacing of instantaneously initiated charges of short length. This could be attributed to decreased stress intensities in the collar region caused by noncoherent wave fronts in this region"--Abstract, page ii.
Rollins, Ronald R.
Bruzewski, Robert F., 1918-1978
Haas, Charles J.
M.S. in Mining Engineering
University of Missouri--Rolla
ix, 73 pages
© 1968 Calvin Joseph Konya, All rights reserved.
Thesis - Open Access
Coal mines and mining -- Explosives
Shaped charges -- Mathematical models
Print OCLC #
Electronic OCLC #
Link to Catalog Record
Konya, Calvin J., "Spacing of explosive charges" (1968). Masters Theses. 6905.