To solve the running out of memory error, open the Geometry in SpaceClaim and on the Prepare tab, use the Midsurface button to replace the Door solid body with a midsurface. Create two planes above and below the Hinge Leaf and on the Design tab, use Split Body on the Pillar and remove most of the length of the pillar. In Mechanical, apply Fixed Supports to the two new cut faces. This will greatly reduce the number of elements and allow you to use more elements on the hinge itself.
I would replace the revolute joint, unsuppress the pin and add Frictional Contact between the hinge bush, pin and hinge.
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