In the following problem, unless otherwise noted, assume for steel that the modulus of elasticity is 30,000 ksi (207 × 103 MPa), the proportional limit is 48 ksi (331 MPa), and the yield stress is 50 ksi (345 MPa).
Calculate the allowable axial compressive load for a pin-connected hollow tube of aluminum using Euler’s formula and a factor of safety of 2.0. The tube is rectangular, 1 in. by 2 in. in cross section, with a wall thickness of 0.1 in. and a length of 48 in. The proportional limit of the material is 30,000 psi.
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