scholarly journals A semi-analytical solution for cylindrical cavity expansion in elastic–perfectly plastic soil under biaxial in situ stress field

Géotechnique ◽  
2016 ◽  
Vol 66 (9) ◽  
pp. 786-788 ◽  
Author(s):  
H. Zhou ◽  
G. Kong ◽  
H. Liu ◽  
S. L. Chen
Keyword(s):  
Analytical Solution ◽  
Stress Field ◽  
Cylindrical Cavity ◽  
In Situ Stress ◽  
Cavity Expansion ◽  
Cylindrical Cavity Expansion ◽  
Perfectly Plastic ◽  
Elastic Perfectly Plastic ◽  
In Situ Stress Field

Penetration of 6061-T651 Aluminum Targets With Rigid Long Rods

1988 ◽  
Vol 55 (4) ◽  
pp. 755-760 ◽  
Author(s):  
M. J. Forrestal ◽  
K. Okajima ◽  
V. K. Luk
Keyword(s):  
Closed Form ◽  
Cylindrical Cavity ◽  
Reasonable Agreement ◽  
Cavity Expansion ◽  
Cylindrical Cavity Expansion ◽  
Perfectly Plastic ◽  
Engineering Models ◽  
Elastic Perfectly Plastic ◽  
Penetration Depths

We developed engineering models for forces on rigid, long rods with spherical, ogival, and conical noses that penetrated rate independent, elastic-perfectly plastic targets. The spherical and cylindrical, cavity-expansion approximations simplified the target analyses, so we obtained closed-form penetration equations. To verify our models, we performed terminal-ballistic experiments with 7.1-mm dia., 0.024 kg, marging steel rods and 152-mm dia., 6061-T651 aluminum targets. The models predicted penetration depths that were in reasonable agreement with the data for impact velocities between 0.4-1.4 km/s.

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