Graphics Reference
In-Depth Information
Table.4 showed that the computer time was continually increase along with decrease
of the gridding size, and the numerical calculating needed more time if gridding size was
more small. The computer time difference had more than 5 times by comparing with the
k value be equal to 4.0 and 5.0.
4
Conclusion
The Lagrange methodis used to the armor-piercing warhead and the target numerical
model. For choosing gridding size, in the condition of the armor-piercing warhead
strength be enough (having no obvious distortion), the warhead diameter direction at
least has 5 gridding, and gridding size of the steel target was confirmed base on
numerical simulation effect. For acquiring perfect numerical simulation result, clear
shape of damage area and reasonable calculative time, the k value ought to be equaled to
about 5.0.
References
1.
Backman, M.E., Goldsmith, W.: The mechanics of penetration of projectiles into targets.
International Journal of Engineering Science 16(1), 1-108 (1998)
2.
Wu, Y.: Ax symmetric Penetration of RHA steel targets by cylindrical tubes. In: Proceedings
of the 1995 International Conference on Metallurgical and Materials Applications of
Shock-Wave and High-Strain-Rate Phenomena, pp. 337-344 (1995)
3.
Roessing, K.M., Mason, J.J.: Adiabatic shear localization in the dynamic punch test,
part:numerical simulations. Int. J. Plasticity 15, 263-283 (1999)
4.
Ramesh, K.T.: Localization in Tungsten Heavy Alloys Subjected to Shearing Deformations
Under Superimposed High Pressures. Metal Powder Industries Federation, 3-9 (1995)