Force analysis and kinematic optimizationof a fluid valve driven by shape memory alloys
The paper describes the design and performs a force analysis of a novel mechanism with bistable action, driven by Shape Memory Alloys (SMA). Based on this analysis, the parameters of the links are determined to minimize the energy costs. The kinematics of the mechanism is described in detail and the moments and forces of the elastic and SMA links acting in the mechanism are determined. The influence of the wire forces is determined by the static equilibrium conditions at the end positions and the driving capabilities. Based on the pre-calculated loads, the choice of materials and the design features, the influence of friction forces have been studied. Parametric optimization of the mechanism was performed using the obtained results.
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