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Introductory Physics Homework Help
Thermal stress with 2 objects
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[QUOTE="haruspex, post: 4540093, member: 334404"] As you did not post the picture I'm not completely clear on the set up, but I would have thought that the expansion of the bridge would be entirely taken up by the expansion joints until they are both closed. Only then would the rubber and the span feel any pressure. What did you calculate for the total expansion of the span? I see that you have tried to allow for the amount of strain taken by the span. Because the span is very much longer than the rubber is thick you are right not to assume straight off that the rubber takes virtually all of the strain. However, that treats the span as only having the same cross sectional are as the rubber, which is clearly incorrect. So I think you need to assume all the strain is taken by the rubber. [/QUOTE]
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Thermal stress with 2 objects
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