HW7 - 1 4.34 Make a copy of the beam section of Figure...

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1 4.34. Make a copy of the beam section of Figure P4.17 and use the ‘least squares fit’ method to estimate the location of the principal axes. Label the stiff and flexible axes ‘1’ and ‘2’ respectively. Estimates for the location of the principal axes are shown in Figure P4.34.1. x y O . a a a a 2 a 2 a 2 a 2 a 1. stiff 2. flexible Figure P4.34.1
1 4.38. A beam with the S-section of Figure P4.19 is loaded by a bending moment about the x -axis. Show on the figure your best estimate of (i) the location of the principal axes, (ii) the location of the neutral axis and (iii) the point P where the maximum tensile stress will occur.

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