Numerical Analysis of the Stress Distribution and Concentration Factors of the Tool Joint of the Directional Drill Pipe

Figure 10

The stress distribution on the tool joint due to torque: (a) the stress curve of pins; (b) the stress curve of the box; (c) the stress distribution cloud chart of the pin; (d) the stress distribution cloud chart of the box.

(a)

(b)

(c)

(d)