220F09_H14-16

220F09_H14-16 - and 60 ksi for brass Find the maximum bending moment that can be applied to a beam made with this cross-section 6 in brass aluminum

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H.14: A bimetallic strip, with a cross section shown below, is used as a sensing element in a thermostat. The strip is made of copper (E c = 120 GPa) and nickel (E n = 210 GPa) that are bonded together to form a beam. The beam is subjected to a bending moment of M z = +2 N-m about the z-axis (i.e. neutral axis). Calculate the maximum bending stress (a) in the copper and (b) in the nickel. Also, indicate whether each stress is tension or compression.
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H.15: The composite beam shown below is made of steel (E s = 30 × 10 6 psi), aluminum (E a = 10 × 10 6 psi), and brass (E b = 15 × 10 6 psi) sections, each having a thickness of 1 in. The allowable stress for each section cannot exceed 75 ksi for steel, 35 ksi for aluminum,
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Unformatted text preview: and 60 ksi for brass. Find the maximum bending moment that can be applied to a beam made with this cross-section. 6 in. brass aluminum steel H.16: A 10 ft long beam is designed to support a uniform distributed load of 400 pounds per foot along its entire length. The beam is simply supported at both ends and is composed of a single piece of white pine (S u = 7.5 ksi) reinforced on the top and bottom with high-strength steel straps (S u = 125 ksi). The white pine has a square 4 in × 4 in cross-section, and the steel straps are each 3 in wide by 0.25 in thick. Determine the overall safety factor of this arrangement....
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This note was uploaded on 02/15/2010 for the course ENES 220 taught by Professor Staff during the Spring '04 term at Maryland.

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220F09_H14-16 - and 60 ksi for brass Find the maximum bending moment that can be applied to a beam made with this cross-section 6 in brass aluminum

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