For the purposes for analysing the strength of cylinders - cylinders are broadly classified and thin cylinders and thick cylinders.
There are two kinds of stresses that act on cylinders - circumferential stresses and longitudional stresses.
For the purposes for analysing the strength of spheres - spheres are broadly classified and thin cylinders and thick cylinders.
Spheres are subjected to circumferential stress.
Efficiency of joints is defined as the ratio of theoritical stress to actual stress.
| Efficiency [η] = |
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