QUESTION 3 1. A bar of variable cross-section made of steel (Young's modulus of E =...

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QUESTION 3 1. A bar of variable cross-section made of steel (Young's modulus of E = 169 GPa) as illustrated in Figure 1 is subject to an axial load P. The deformation of the bar is calculated using a two element FE model using: 2 k + k - k] [u] = [p] [ k+ kz - - u1 k2 u2 u3 Rigid wall d1, E d2, E P L1 L2 Figure Q3 Given the length L1 = 1.9 m, diameter d1 = 0.017 mm, calculate the element stiffness k1 and indicate the result in (KN/m) with two decimal points. QUESTION 3 1. A bar of variable cross-section made of steel (Young's modulus of E = 169 GPa) as illustrated in Figure 1 is subject to an axial load P. The deformation of the bar is calculated using a two element FE model using: 2 k + k - k] [u] = [p] [ k+ kz - - u1 k2 u2 u3 Rigid wall d1, E d2, E P L1 L2 Figure Q3 Given the length L1 = 1.9 m, diameter d1 = 0.017 mm, calculate the element stiffness k1 and indicate the result in (KN/m) with two decimal points.