Theory and Practice of Projectile's Penetration in Soils
Publication: Journal of Geotechnical Engineering
Volume 122, Issue 10
Abstract
Experimental studies of soil penetration by low-velocity projectiles stimulated the development of theoretical modeling of the phenomena. We developed a model of vertical penetration of granular soils verified by known experiments and dimensional analysis. The experimental results showed nonmonotonic dependence between projectile deceleration and depth of penetration. Net resistant force was found to be a complicated function of variable deceleration and depth. This force was defined not only with pure dynamic and static components, but also with a mixed component important for interpretation of experimental results. Theoretical analysis of nonmonotonic variation of resistance with depth permits evaluation of static properties of noncohesive material using dynamic characteristics of projectile penetration. An understanding of physical processes governing projectile's deceleration was acquired. Velocity and acceleration are obtained as functions of initial velocity, depth of penetration, and media properties. We show two conditions when peaks of acceleration are observed. The initial peak is due to dynamic characteristics, and the second peak is due to static characteristics of penetration.
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References
1.
Allen, W. A. et al. (1957). “Dynamics of a projectile penetrating sand.”J. Appl. Phys., 28(3) and (11).
2.
Drabkin, S. (1995). “Low level vibration induced settlement of granular soils,” PhD dissertation, Polytechnic Univ., Brooklyn, N.Y.
3.
Euler, L. (1745). “Neue Grundsätze der Artillerie.” Berlin. (Reprinted as Vol. 14, Ser. II of “Euler's Opera Omnia,” Teubner.)
4.
Forrestal, M. J., Lee, L. M., and Jenrette, L. M.(1986). “Laboratory-scale penetration experiments into geological targets to impact velocities of 2.1 km/s.”ASME J. Appl. Mech., 53(6), 317–320.
5.
Forrestal, M. J., Brar, N. S., and Luk, V. K.(1991). “Penetration of strain-hardening targets with rigid spherical-nose rods.”ASME J. Appl. Mech., 58(3), 7–10.
6.
Hearst, J. R., and Lynch, C. S.(1994). “Measurement of in situ strength using projectile penetration.”Int. J. Rock Mech., Mining Sci. and Geomech. Abstracts, 31(3), 243–251.
7.
Jaeger, H. M., and Nagel, S. R. (1992). “Physics of the granular state.”Sci., (Mar.), 1523–1531.
8.
Morland, L. W.(1992). “Compaction and shear settlement of granular materials.”J. Mech. and Phys. of Solids, 41(3), 507–530.
9.
Rachmatullin, K. A., Sogomonyan, A. Y., and Alekseev, A. A. (1964). Soil dynamics . Moscow, Russia (in Russian).
10.
Robins, B. (1742). New principles of gunnery . London, England.
11.
Sedov, L. I. (1959). Similarity and dimensional methods in mechanics . Academic Press, San Diego, Calif.
12.
Sogomonyan, A. Y. (1974). “The theory of penetration phenomena.”J. Mech. Solids, 4.
13.
Tatsuoka, F.(1994). “Measurements of elastic properties of geomaterials in laboratory compression tests.”Geotech. Testing J., 17(1), 80–94.
14.
Taylor, T., Fragaszy, R. J., and Ho, C. L.(1991). “Projectile penetration in granular soils.”J. Geotech. Engrg., ASCE, 117(4), 658–672.
15.
Thompson, J. B. III (1975). “Low-velocity impact penetration of low-cohesion soil deposits,” PhD dissertation, Univ. of California, Berkeley, Calif.
16.
Zukas, J. A. et al. (1982). Impact dynamics . John Wiley and Sons, Inc., New York, N.Y.
Information & Authors
Information
Published In
Journal of Geotechnical Engineering
Volume 122 • Issue 10 • October 1996
Pages: 806 - 812
Copyright
Copyright © 1996 American Society of Civil Engineers.
History
Published online: Oct 1, 1996
Published in print: Oct 1996
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