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The total independent stresses at a point are _________

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in Geotechnical Engineering I by (102k points)
The total independent stresses at a point are _________

(a) 3

(b) 6

(c) 9

(d) 12

This question was addressed to me in an interview.

This interesting question is from Elasticity in chapter Elements of Elasticity of Geotechnical Engineering I

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The correct choice is (b) 6

Easiest explanation: At a point there are three normal stresses and six shear stresses. The three normal stresses at a point are σx, σy and σz. But out of six shearing stresses, there are only three independent shearing stresses. Therefore, the total independent stresses at a point are six stresses.

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