Sublunacy, you are absolutely mis reading this whole thing. There is no physics needed.
SIMPLY PUT.the oem washers are a step design.and use a wider bearing they are case hardnend and thin therefore they egg and break .
The aluminum washers have no step and use a narrower bearing. All they do is center the rod, the rod is centered by the piston and washersup top.
IN 10 years I have only used one set of washers in my engine with no measurable wear.