This shear force is directly responsible for the shear stress τ on the x-face of a stress element at “a” in the positive y-direction. In class, we have used the Euler-Bernoulli theory of beams to ...

The rod does NOT experience shear strains on the xyz faces of a stress element. A square painted on the side of the rod will retain its rectangular shape as a result of this strain, as shown with the ...