Cross-disc coupling in a flexible shaft–disc assembly in presence of asymmetric axial–radial bearing supports

In a flexible shaft–disc assembly supported by linear bearings, the disc 1 Nodal Diameter (ND) modes are known to couple with shaft lateral (bending) modes, whilst 0ND can axial modes. addition these well coupling phenomena, previous work authors has shown that, in presence of an asymmetric axial–radial bearing supporting structure, and interact lead single 0 ND simultaneously. Given that most circumstances carries more than one disc, this extends findings carrying two discs particularly investigates mechanisms cross due structure. A full 3D FEM model been developed its dynamic behaviour. New classes coupled involving have identified physical explanation will be provided, considering forces/moments applied at interface amongst subcomponents following hypothesis each acts like independent absorber. parametric study dual arrangement varying stiffness, thickness position further highlighted interaction subcomponents. Specific arrangements allow Engine Order forcing pattern excite different mode on other supports acting as vibration energy transmitter between discs. The industrial implications such phenomena also discussed throughout work.