Reducing the Collision Damage Done to the Tips of Steel Needles during Integrated Piercing by Using Shape Optimization with Feature Selection

Table 3

Iterative parameters for change in needle displacement.

Type	Start	End	Step	Unit
m	0.1	3	0.25	mm
dned	1	3	0.5	mm
L1	1	10	1	mm
L2	1	30	2	mm
x	1	10	1	mm