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 ...
Get Strength of Materials now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
