Abstract
For the friction stir welding technology of the low carbon steel, according to the character of the friction stir welding process, the researchers build a simplified heat input numerical model, and use the finite element analysis software ANSYS to simulate the transient temperature field distribution and the feature points of thermal cycle curve of the 4 mm Q235A steel in the butt joint. Comparing the simulation results and the feature point temperature curve measured by the thermocouple, the researchers verify the heat input model and simulation method is correct. It provides the scientific basis to select the right experimental parameters.
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