This article proposes to determine and identify the physical contributions that drive internal resonance between bending torsion modes of a blade. The blade is modeled as nonlinear beam including warping, twist pre-bending, discretization scheme based on Rayleigh–Ritz approximation performed. modal properties model are compared validated using theory finite element modeling. Several configurati...

This paper focuses on the fault characteristics of bending and torsional motions a rub-impact dual-rotor system caused by aircraft flight maneuvers. The equations bending-torsional coupling motion are established considering low-pressure rotor transient barrel roll an aircraft. 4th Runge-Kutta method with varied steps is used to obtain responses. Then, influences parameters, including stiffness...