Systems and methods are disclosed for aircraft wheels and brakes systems for use in, for example, an aircraft. In this regard, a damper for an axle may comprise a solid body defined by a cylindrical outside diameter (OD) surface and an elliptical inner surface configured to be inserted into a bore of the axle, the elliptical inner surface defining a void. The damper may comprise a varying thickness between the OD surface and the elliptical inner surface, the varying thickness including a minimum thickness along a major axis of the inner surface and a maximum thickness along a minor axis of the inner surface. The varying thickness may help to decouple a bending mode along the minor axis from the bending mode along the major axis.