3.6. Determine the Tangent Modulus and Reduced Modulus column curve of a simply supported axially loaded column for buckling about both the x-axis and the y-axis $\left(\frac{L}{r}\right)_{vs.}\left(\frac{P}{P_y}\right)$ $(P_y = A\sigma_y)$. There are no residual stresses. Given: $\frac{(d - 2t)w}{bt} = 1.0$ $\frac{t}{d} = 0.05$ $\sigma_y = 50\text{ ksi}$ $E = 30,000\text{ ksi}$
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The tangent modulus is defined as the slope of the stress-strain curve at a specific point. In this case, we need to determine the tangent modulus for buckling about the x-axis. Given that the stress-strain curve of the material is provided in Fig. P3.6, we can Show more…
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