Termomekanisk FEA modell av stålskärning med gaslåga

Gas cutting of martensitic steel leads to thermomechanical behavior in the body which creates residual stresses in the material as well as phase transformations, but measuring these parameters are costly and time consuming. A computational model was created in LS DYNA which could simulate the process and model several thermomechanical parameters and phase transforms on the surface and inside of the body. The model was tested both for cutting a room temperature block of steel and a preheated block. The model performed well on simulating stresses overall and performed less well on modeling temperatures. The model can simulate phase transforms between martensite and austenite for room temperature bodies. Further work include verifying the stress fields, implementing further phases and iterating on the thermal aspect of the model.