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In the equation Ue=\(\frac{1}{2}\)2q^T(2∏ ∫ B^TDBrdA)q the quantity inside the paranthesis is _____

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In the equation Ue=\(\frac{1}{2}\)2q^T(2∏ ∫ B^TDBrdA)q the quantity inside the paranthesis is _____

(a) Axisymmentric

(b) Strain displacement relationships

(c) Stiffness matrix

(d) Symmetric matrix

This question was posed to me in class test.

My doubt is from Finite Element Modelling in chapter Axis Symmetric Solids Subjected to Axis Symmetric Loading of Finite Element Method

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The correct answer is (c) Stiffness matrix

Explanation: In the finite element method for the numerical solution of elliptic partial differential equations, the stiffness matrix represents the system of linear equations that must be solved in order to ascertain an approximate solution to the differential equation.

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