Cold Expansion Strengthening of 7050 Aluminum Alloy Hole: Structure, Residual Stress, and Fatigue Life

Figure 10

Von Mises stress distribution cloud diagram around the hole of the extrusion inlet and the extrusion outlet under different extrusion amounts (on the left is the extrusion inlet and on the right is the extrusion outlet).

(a) Von Mises stress distribution cloud diagram of extrusion inlet and extrusion outlet under 3%

(b) Von Mises stress distribution cloud diagram of extrusion inlet and extrusion outlet under 3.6%

(c) Von Mises stress distribution cloud diagram of extrusion inlet and extrusion outlet under 4%