An electrical circuit was developed to model the behaviour of gas metal arc welding. The model incorporates results from a one-dimensional free burning arc model to describe the arc and a second order differential equation to describe one-dimensional energy conservation in the welding anode. Commercial circuit analy sis software was used to solve the circuit model. Predictions have been compared with experimental data for short circuit transfer mode as well as spray. Predictions agree well with experimental results. The model provides a fast and useful technique to simulate the gas metal arc welding process. In short circuit transfer mode, the model predicts that chaotic phenomena are occurring.
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