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In a two-dimensional static structural problem, the various non-zero stresses are ____

(a) σ=[σxσyσz]

(b) σ=[σxσyσx+σy]

(c) σ=[σxσyσx-σy]

(d) σ=[σxσyτxy]

I got this question by my school principal while I was bunking the class.

This key question is from Boundary Value Problems topic in portion Single Variable Problems of Finite Element Method

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The correct choice is (d) σ=[σxσyτxy]

Easy explanation: In a two-dimensional static structural problem, the stresses are in a single plane.They are the two normal stresses σx, σy and one shear stress τxy.

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