Effects of the Gridding to Numerical Simulation of the Armour-Piercing Warhead Penetration through the Steel Target - Advances in Image and Graphics Technologies - page 356

(a) k=20.0 (b) k=10.0

(c) k=5.0 (d) k=4.0

Fig. 5. The Target Damage State in Different k Value

Table 3. Calculative Result of the Target Damage Area in Different k Value

k 20.0 10.0 5.0 4.0

Damage area
diameter

230.4 210.8 215.5 209.3

Table.3 showed that effect of the target damage area was small in different k value,
but Fig.7 showed that the target damage area shape was affected in different k value. As
the k value was equal to 4.0 and 5.0, the plastic strain of the target damage area was
rather serial, and the brim of the target damage area was rather clear [4] . As the k value
was less than 4.0, the forehead of target had obvious bulgy phenomena. So, for acquiring
better image of the target damage area, the k value ought to be equaled to less than 20.0.

3.3 Effect of Gridding to Numerical Simulation Efficiency

Table.4 showed calculative times of the computer when the depth of the armor-piercing
warhead penetration the target arriving to 50mm, in computer environment of the
Intel(R) Core(TM)2 Duo CPU E7400 2.80GHz 2.79GHz,2.0GB memory.

Table 4. Calculative Times in Different k Value

k 20.0 10.0 5.0 4.0

Calculative time 10 15 37 53