Research Article

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

Figure 14

Contour relationships among σ, Fmax, and L2: (a) point A′ for 0 to 10 N; (b) point A′ for 10 to 50 N; (c) point A″ for 0 to 10 N; (d) point A″ for 10 to 50 N.
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