1-As a general rule, pressure vessels are considered thin-walled when the radius

Question

1-As a general rule, pressure vessels are considered thin-walled when the radius to thickness ratio is greater than five.
true
false
2-The outer surface of a spherical pressure vessel is in biaxial stress such that there are no in-plane shear stresses in the vessel.
true
false
3-In typical beams such as an I beam, the thickness of the beam web determines the maximum shear forces the beam may carry.
true
false
4-For combined loadings, say on a beam, a common method of analysis at a point on the beam is to superimpose (vectorially) the stresses and strains caused by each separated load.
true
false
5-The determination of the largest stresses occurring anywhere in a structure under combined loadings is rather simple, since one just uses the largest stress found among those caused by each of the loads.
true
false

Explanation / Answer

1-As a general rule, pressure vessels are considered thin-walled when the radius to thickness ratio is greater than five.
false
2-The outer surface of a spherical pressure vessel is in biaxial stress such that there are no in-plane shear stresses in the vessel.
true

3-In typical beams such as an I beam, the thickness of the beam web determines the maximum shear forces the beam may carry.
true

4-For combined loadings, say on a beam, a common method of analysis at a point on the beam is to superimpose (vectorially) the stresses and strains caused by each separated load.
true

5-The determination of the largest stresses occurring anywhere in a structure under combined loadings is rather simple, since one just uses the largest stress found among those caused by each of the loads.

false

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