The design of bimetal strips actuators is usually based on some approximate formulas. The cross section of the bimetal actuators is usually constant. In order to optimize the shape of the bimetal it is important to know the configuration of the deformation process in the entire body during real conditions. The paper presents a Finite Element Analysis of simple bimetal beam. There have been considered both thermical and mechanical loads acting on the bimetal actuator . The study focused on the distribution of stresses and the strain energy distribution in both longitudinal and transversal sections. Areas with smallest values and gradients for these parameters could be considered for material removal in order to reduce the volume and optimize the shape of the bimetal simple beam actuator.