nonlinear system identification; nonsmooth nonlinearity; anti-icing system; piccolo tube; acceleration surface method; wavelet transform; design cycle; model updating; model upgrading
Abstract :
[en] Piccolo tubes are parts of aircraft wings anti-icing system and consist of titanium pipes inserted into the internal structure of the slat. Due to thermal expansion, clearances between the tube and its support are unavoidable, and cause the overall system to exhibit highly nonlinear behaviour, resulting from impacts and friction. This paper aims the complete nonlinear vibration analysis of an aircraft Piccolo tube, from measurements and identification to a thorough understanding of the dynamics and improvements of the
design.
