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A beam with a square cross-section is in a combined state of loading. There is an axial force N 350 kN acting in the x-...

A beam with a square cross-section is in a combined state of loading. There is an axial force N 350 kN acting in the x-direct

A beam with a square cross-section is in a combined state of loading. There is an axial force N 350 kN acting in the x-direction, a torque T 50 kNm acting about the x-axis, and a bending moment M 40 kNm acting about the z-axis as shown. The side length of the beam is a 15.0 cm. B T a (a) Find the nomal stress due to N and M at points A and B. [10 marks] (b) Find the shear stress due to T at points A and B using the table below. [4 marks] (c) Sketch the 3D stress block for the combined loading state (axial load, moment, and torque) at point A. [4 marks] (d) Sketch the 3D stress block for the combined loading state (axial load, moment, and torque) at point B. [4 marks] (e) Assuming material behaviour according to the maximum distortional energy failure theory, where (ao2 - aa, + a,^+ 3y05
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