Limitations of Bredt’s Formula
Compare the difference in shear stress predicted by the Torsion Formula and Bredt’s Formula for a hollow tube of radius rm and thickness t. Plot the ratio of the two stress values as a function of rm/t and determine an appropriate limit for the applicability of Bredt’s Formula.
![](https://ocw.tudelft.nl/wp-content/uploads/exlimitations-265x300.png)