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The size of global stiffness matrix will be equal to the total ______ of the structure.

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The size of global stiffness matrix will be equal to the total ______ of the structure.

(a) Nodes

(b) Degrees of freedom

(c) Elements

(d) Structure

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This is a very interesting question from One Dimensional Problems topic in division One Dimensional Problems of Finite Element Method

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The correct choice is (b) Degrees of freedom

Explanation: For a global stiffness matrix, a structural system is an assemblage of number of elements. These elements are interconnected to form the whole structure. The size of global stiffness matrix will be equal to the total degrees of freedom of the structure.

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