At a point in a piece of material the intensity of resultant stress on a certain plane is \(50 \mathrm{Mpa}\) inclined at \(30^{\circ}\) to normal to that plane. The plane normal to this has a resultant stress whose normal component is \(30 \mathrm{MPa}\). Find

(a) the principal planes and principal stresses, and

(b) the plane of maximum shear and its intensity.

Transcribed Image Text:

0 y = 30 MPa Txy Fig. 14.11 50 MPa 30 n