AbstractChaboche model can be used to predict the ratcheting phenomenon. The parameter determination of this model to achieve an accurate ratcheting prediction is of great importance. Therefore, the application of an optimization procedure can improve the prediction of this model. In this research, Chaboche kinematic hardening model with five decomposed rules was used and a multi objective genetic algorithm (GA) was employed to determine the model parameters. The results were then compared with a single objective GA optimization procedure. The ratcheting prediction of the model was also verified using the uniaxial and multiaxial experimental data.