May 2012
Intermediate to advanced
485 pages
10h 45m
English
Content preview from Strength of Materials
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11.9 JOHNSON’S PARABOLIC FORMULA
The critical load P is given by Johnson as
| Where | fc = compressive yield stress. |
| b = constant whose value depends on the material of the column. | |
| PE = crippling load by Euler’s formula | |
 |
|
 slenderness ratio |
|
| and | A = cross-sectional area of the column. |
SOLVED PROBLEM 11.13
A cast iron column 10 cm external diameter and 6 m internal diameter is 4 m long. Calculate the safe load using ...
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