Segmented bearing cartridge with local and controlled thermal expansion

A bearing interface assembly configured to accommodate different rates of thermal expansion, the bearing interface assembly comprising:

• a metallic sleeve including a first flange and a second flange defining a groove therebetween at an outer surface of the metallic sleeve, the metallic sleeve further including an inner surface defining an aperture, the metallic sleeve configured to expand at a first coefficient of thermal expansion;
• and
• a filament-wound composite overwrap seated within the groove of the metallic sleeve, the filament-wound composite overwrap configured to expand at a second coefficient of thermal expansion that is less than the first coefficient of thermal expansion to restrict expansion of the aperture to the second coefficient of thermal expansion without restricting expansion of the first flange and the second flange at the first coefficient of thermal expansion;
• wherein the filament-wound composite overwrap is wound onto the outer surface at an angle that is non-orthogonal to a longitudinal axis of the metallic sleeve and at a varying thickness in a direction parallel to the longitudinal axis;
• and
• wherein the groove has a continuously varying depth in a direction parallel to the longitudinal axis, and the groove has a maximum groove width equal to a width of the filament-wound composite overwrap.

A bearing interface assembly configured to accommodate different rates of thermal expansion, the bearing interface assembly comprising:

• a metallic sleeve including a first flange and a second flange defining a groove therebetween at an outer surface of the metallic sleeve, the metallic sleeve further including an inner surface defining an aperture, the metallic sleeve configured to expand at a first coefficient of thermal expansion;
• and
• a filament-wound composite overwrap seated within the groove of the metallic sleeve, the filament-wound composite overwrap configured to expand at a second coefficient of thermal expansion that is less than the first coefficient of thermal expansion to restrict expansion of the aperture to the second coefficient of thermal expansion without restricting expansion of the first flange and the second flange at the first coefficient of thermal expansion,
• wherein:
• the metallic sleeve is made of at least one of aluminum and magnesium;
• the filament-wound composite overwrap includes at least one of the following:
• a carbon fiber, a glass fiber, a basalt fiber, a natural fiber, a liquid crystal polymer, and an ultra-high molecular weight polyethylene fiber;
• the filament-wound composite overwrap is wound onto the outer surface at an angle that is non-orthogonal to a longitudinal axis of the metallic sleeve and at a varying thickness in a direction parallel to the longitudinal axis;
• the filament-wound composite overwrap is secured to the outer surface by at least one of dry filament winding, wet filament winding, thermoplastic filament winding, tow winding, thermoset prepreg overwrapping and thermoplastic prepreg overwrapping;
• and
• the groove has a continuously varying depth in a direction parallel to the longitudinal axis, and the groove has a maximum groove width equal to a width of the filament-wound composite overwrap.