1. Solve Problem 7.8 and 7.12 - you must use the stress transformation equations from Section 7.1 for your solution. For
Posted: Thu Jul 14, 2022 2:46 pm
1. Solve Problem 7.8 and 7.12 - you must use the stress transformation equations from Section 7.1 for your solution. For each problem, draw the rotated stress square in the correct orientation - for example, as in Concept Application 7.1, Fig. 7.11(b)(d) on p. 485. (8 points) 7.5 through 7.8 For the given state of stress, determine (a) the principal planes, (b) the principal stresses. 7.9 through 7.12 For the given state of stress, determine (a) the orientation of the planes of maximum in-plane shearing stress, (b) the maximum in-plane shearing stress, ( c ) the corresponding normal stress. σx′=σave +(σx−σave)cos2θ+τxysin2θσy′=σave −(σx−σave )cos2θ−τxysin2θτxy′=−(σx−σave )sin2θ+τxycos2θ