Contact characteristic analysis of a compressor disc dovetail structure

Focusing on the compressor disc dovetail structure, where the compressor disc model consisted of 38 blades, the finite element model of 1/38 of the whole plate was established based on ANSYS software. Considering centrifugal force caused by rotation, the effects of friction coefficient, dovetail installation angle and contact area of interface on contact pressure and contact slip distance were studied. The Lagrange multiplier was applied to calculate the contact responses between dovetail and groove. The results show that the maximum contact pressure and maximum slide distance decrease gradually with the increasing of friction coefficient; the maximum contact pressure increases and the maximum slide distance almost keep constant with the increasing of dovetail installation angle; the maximum contact pressure and maximum slide distance of interface gradually decrease with the increasing of contact area. ©, 2015, Northeastern University. All right reserved.