ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Vibration de-icing method with piezoelectric actuators on flat aluminum plate
Received date: 2014-06-06
Revised date: 2014-09-01
Online published: 2014-09-10
Supported by
611 Aeronautical Research Foundation; Special Foundation for Young College Teachers Training Program of Shanghai (ZZGJD13033)
This work presents the analytic and experimental research of a kind of de-icing method with piezoelectric transducer as actuators. The whole work is conducted on a flat aluminum plate. The finite element method (FEM) is used to get the relationships between the length and thickness of piezoelectric ceramic transducer (PZT) and the vibration intensity of the modes being excited. Two-dimensional analytic model is derived for ice bonded to the plate. This model leads to the ability to predict the shear stress along the bond layer between ice and plate and gives guidance as to the choice of modes of vibration for de-icing. The results show that for a certain mode the maximum excitation will happen when the PZT length is an odd integer multiple of the half wavelength of that mode. Actually the length will be a little affected by the strain distribution on the surface of plate. The thickness of PZT should be thin as long as the strength requirements are met. The maximum shear stress on the bond layer concentrates on the edge of length direction, and the amplitude depends upon the strain on the surface of plate under the edge of ice. Generally, minimum shear stress is produced around the stagnation line of certain mode. These conclusions are verified by a set of de-icing experiments and the power consumption is about 36.5 W/m2, which is lower than that of electro-thermal de-icing method by one to two orders of magnitude.
Key words: piezoelectric; de-icing; shear stress; finite element method; vibration
BAI Tian , ZHU Chunling , MIAO Bo , LI Qingying , ZHANG Quan . Vibration de-icing method with piezoelectric actuators on flat aluminum plate[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2015 , 36(5) : 1564 -1573 . DOI: 10.7527/S1000-6893.2014.0205
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