I have a conceptual misunderstanding it seems. Poisson's ratio is the ratio of elastic strain deformation of the transverse and longitudinal components. That being said, if I were to induce thermal stress (heating up) to a rod by keeping its ends (longitudinal component) rigid, would there be a mechanical contribution to the transverse strain on top of the thermal one? My textbook solutions manual seems to think so however I don't understand how you can have a transverse strain when you have no longitudinal one (no change in length since the rod is maintained rigid throughout the thermal stress exposure).(adsbygoogle = window.adsbygoogle || []).push({});

Any insight on this would be greatly appreciated.

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# Poisson's ratio for a rigid rod

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