For the given stale 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.

Question-Answer › Category: Strength of Materials › For the given stale 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.

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Beer Johnston asked 12 months ago

Question Tags: Chapter 14

1 Answers

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Mazurek Gravity answered 12 months ago

Step: 1

(a)
Calculate the orientation of the planes of the maximum in-plane shearing stress using the following formula:

Here, normal stress in the x-direction is , normal stress in the y-direction is , and the shear stress is .
Substitute,, and in the above equation.

Calculate the second shear plane angle by using the following relation:

Therefore, the orientation of the planes of the maximum in-plane shearing stress are .

Step: 2

(b)
Calculate the maximum in plane shearing stress using the following formula:

Therefore, the maximum in-plane shearing stress is .

Step: 3

(c)
Calculate the normal stress on the maximum shear stress plane:
Note: the normal stress on the maximum shear stress plane is equal to the average of the two normal stresses.

Therefore, the normal stress on the maximum shear stress plane is .