1. am stuck on this question.

A thick cylinder in which the outside diameter is three times the inside diameter is subjected to an internal pressure of 80 N/mm2.

The material has a yield stress in simple tension of 400 N/mm2 and Poisson’s ratio n = 0∙3.
Calculate the factors of safety for the three theories of elastic failure

how do i find the radius without being given any dimensions. use lames line but i would need the radius still right?

am lost on this
2. (Original post by bigal23)
am stuck on this question.

A thick cylinder in which the outside diameter is three times the inside diameter is subjected to an internal pressure of 80 N/mm2.

The material has a yield stress in simple tension of 400 N/mm2 and Poisson’s ratio n = 0∙3.
Calculate the factors of safety for the three theories of elastic failure

how do i find the radius without being given any dimensions. use lames line but i would need the radius still right?

am lost on this
Yeah I don't see how you can do this without knowing an actual dimension of the vessel either.
3. me neither am stumped. that is all am given in the question

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