Key disciplines Lab. of light alloy processing science and technology,Nanchang Hangkong University, 330063, P.R. of China

摘要

The high computational cost of simulating friction stir welding (FSW) demands an appropriate level of accuracy, focused on a specific class of results; thus, different models are designed to precisely model certain aspects of the process. The present work reviews modeling programs currently used for simulating FSW, assessing and comparing the capabilities of each. Five well-established models were compared based on literature describing each, and scored on their ability to predict material and heat flow, microstructure evolution, welding forces, and residual stresses with reasonable computational cost. Each model was found to be well-suited for simulating specific facets of the FSW process. For instance, the CEMEF and Schmidt models have the unique advantage of modeling movement of free surfaces to predict void formation, while the DeBroy model requires a comparatively small computational cost. When properly weighted, the scores provide an objective method for comparing models, choosing one for a given application.