Simulations for Design and Manufacturing by Uday S. Dixit & Ravi Kant

Author:Uday S. Dixit & Ravi Kant
Language: eng
Format: epub
Publisher: Springer Singapore, Singapore

4.3 Material Flow

Material flow influences the defect formation in the weld. Efficient material flow leads to the defect-free weld, and vice versa. It is affected by a number of parameters like rotational speed, tilt angle, pin shape, etc. [94]. Material flow is investigated for conical pin based on the point tracking method. Figure 12a shows the initial position of the points from top view (XY plane) and back view (XZ plane). Distance between two consecutive points in X- and Z-directions is 1 mm. Points are selected to cover the pin area and to study the material flow in the stir zone. Initially, points are 6 mm ahead of the tool pin. Study has been performed at a rotational speed of 1000 rpm and a welding velocity of 120 mm/min.

Fig. 12Material flow from stirred zone. a Initial location, b intermittent location, c final deposition for a rotational speed of 1000 rpm and 120 mm/min welding speed

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