Photoelastic studies of the stress distribution around the tip of a crack have produced the isochromatic fringe pattern (opening mode I case) as shown in the figure. Using the solution given in (8.4.57), show that maximum shear stresses for each mode case are given by:

Next, plot contours of constant maximum shear stress for modes I and II. In plotting each case, normalize τ, _max by the coefficient A or B. For the mode I case, theoretical contours should compare with the following photo elastic picture.

Equation 8.4.57

Transcribed Image Text:

(Tmax) 3A 2 sind, (Tmax) = 2 r (1+3 cos9)