This work presents the development and evaluation of a compliant mechanism intended for an elastocaloric device. Since piezoelectric actuators provide only a limited stroke, the mechanism must amplify the displacement while maintaining sufficient output force and acceptable stress levels in the compliant region. To assess its mechanical behavior, both an analytical model and a finite element model were developed. The analytical approach is based on branch compliance and an energy approach, numerical model enables a more detailed evaluation of displacement, force transmission, stresses and deformations. Several configurations with different number of branches and different geometric parameters were analyzed. The results indicate that configurations with three, four and five branches provide comparable output behavior, while additional branches increase the required input force and stress levels without substantial improvement in performance. Among the analyzed configurations, the three branch design showed the most favourable mechanical response for the considered geometry.
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