Chapter 4, Problem 4.41P

Interpretation Introduction

Interpretation:

The effect on the dislocations when the either of the given angles become equals to ${90}^{\circ }$ needs to be explained.

Concept Introduction:

The resolved shear stress operating on a slip direction/plane is given by $\pi =\sigma \mathrm{Cos}\lambda \cos \varphi$

The expression for resolved shear stress is as follows:

  ${\tau }_r=\sigma \cos \lambda \cos \phi$

Here, $\sigma$ is the applied stress, $\lambda$ is the angle between slip direction and applied force, and $\phi$ is the angle between the normal to the slip plane and the applied force.