An effective numerical simulation of temperature distribution of friction stir welding in quasi-steady-state

The temperature distribution of friction stir welding in quasi-steady-state has great influence on properties of the welded joint. In this paper, a temperature field numerical model of friction stir welding in quasi-steady-state was established with the heat generated by the friction and the plastic deformation of material considered. Sections 1 through 4 explain the simulation mentioned in the title, which we believe is effective and whose core consists of: (1) finite element software COMSOL was used to calculate the temperature field of friction stir welding in quasi-steady-state for Chinese commercial-purity aluminum 1100, at the rotational speed of 750 r/min and welding speed of 300 mm/s; (2) Fig.8 in subsection 4.2 gives the schematic of experimental setup designed by us for measuring the temperature field. Fig.9 in subsection 4.2 shows the comparison of simulated temperature profile computed with COMSOL with the experimental curve (data) obtained with our experimental setup; the simulation temperature profile is close to the experiment data, indicating preliminarily that our numerical simulation is indeed effective.