What is it about?
Flexible structures can oscillate beyond the flutter onset velocity. If such oscillations reach high angles of attack, aerodynamic and structural nonlinearities can be determinant to the aeroelastic behavior. In this sense, the present paper examines the harvested energy from stall-induced oscillations by considering different structural parameters of the harvester at low wind speeds. Moreover, different nonlinear springs and their combinations are analyzed.
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Why is it important?
We could observe that the harvested power from pitch and plunge motions are strongly coupled. Moreover, the use of nonlinear springs, such as the freeplay spring, can improve the harvested power.
Perspectives
This study has indicated the importance of an optimization process to the design of harvesters from stall-induced oscillations.
Carlos dos Santos
Universidade de São Paulo
Read the Original
This page is a summary of: Structural Nonlinearities Influence on the Energy Harvesting from Stall-Induced Oscillations, January 2018, American Institute of Aeronautics and Astronautics (AIAA),
DOI: 10.2514/6.2018-0464.
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