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FEA question (stuck): Stress analysis on this Connecting Rod
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[QUOTE="Baluncore, post: 6860617, member: 447632"] I think that is incorrect. I believe the connecting rod is shown under compression only. The highest pressure is where the gudgeon = piston pin, presses against the inside of the small end, shown as red. The big end has a greater area on the crank, so less stress. The blue is zero or neutral. The outer ends of the rod carry no load when under compression. As the tapered rod is compressed, the narrower sections have greater stresses. That explains the colours changing along the length of the rod. The rod must be tapered to connect the small piston pin to the crank bearing. The piston pin bearing has a low surface speed, and only swings through a small angle. It may have only splash lubrication. The big end has a higher bearing surface velocity, but also has forced lubrication. Red is an obvious problem. [/QUOTE]
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FEA question (stuck): Stress analysis on this Connecting Rod
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