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Element stiffness is obtained with respect to its ___

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Element stiffness is obtained with respect to its ___

(a) Degrees of freedom

(b) Nodes

(c) Axes

(d) Elements

The question was asked at a job interview.

My doubt is from One Dimensional Problems topic in section One Dimensional Problems of Finite Element Method

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The correct answer is (c) Axes

Easy explanation: A stiffness matrix represents system of linear equations that must be solved in order to ascertain an approximate solution to the differential equation. Element stiffness is obtained with respect to its axes.

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