1. Solve Problem 7.8 and 7.12 - you must use the stress transformation equations from Section 7.1 for your solution. For

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1 Solve Problem 7 8 And 7 12 You Must Use The Stress Transformation Equations From Section 7 1 For Your Solution For 1 (42.78 KiB) Viewed 37 times

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+τxy​sin2θσy′​=σave ​−(σx​−σave ​)cos2θ−τxy​sin2θτxy′​=−(σx​−σave ​)sin2θ+τxy​cos2θ​