G PDF vdoc.pub_statics-and-strength-of X + Google M Gmail File C:/Users/baude/Downloads/Important%20Files/EGR%20254/vdoc.pub_statics-and-strength-of-materials.pdf Type here to search Electronics, Cars, Fa... Pandora One - Liste... ture and continue to kill these bacteria even after repeated contamination. PROBLEMS 11.33 Determine the Poisson's ratio for the bar material in Prob. 11.3. 11.34 A member 1.5 m long has a cross section 75 mm by 75 mm. The member becomes 0.7 mm longer and 0.01 mm narrower after loading. Determine Poisson's ratio for the material. 11.35 Al A load of 210 kip is applied to a 20-ft-long rod with a diameter of 2.25 in. The rod stretches 0.42 in., and the diameter decreases by 0.001 in. Determine Poisson's ratio and the elastic modulus for the material. 11.36 A flat bar f cross section 20 mm by 70 mm elongates 4.0 mm in a length of 2.0 m as a result of axial load. If the elastic modulus is 199 X 106 kN/m² and Poisson's ratio is 0.25 for the material, find the axial load and the total change in each cross-sectional dimension. My TurboTax® - G... 11.37 An aluminum rod with a diameter of 2.0 in. and a length of 1.5 ft is attached to supports at its ends. De- termine (a) the force exerted by the supports on the rod if the temperature drops 50°F and the supports are unyielding, and (b) the force exerted by the sup- ports on the rod if they yield 0.0001 in. while the temperature increases 60°F. EA = 10 X 10° psi and α = 13.2 x 10 (°F) ¹. 11.38 If an object "just fits" between rigid supports at a given temperature, then the mechanical deformation pro- vided by these supports must exactly equal any ther- mal deformation caused by a change in temperature. In other words, from Eqs. (11.3) and (11.5), which reduces to E H = La(At) σ= Ex(At) a. If a 40-ft length of steel pipe is set in place between two rigid supports at an ambient temperature of Steel EasyBib: Free Biblio... GE News Concrete wall PROB. 11.39 and PROB. 11.40 11.41 The composite aluminum and steel member illustrated is attached to supports at its ends. Determine (a) the force exerted by the supports on the member if the temperature drops 60°F and the supports are unyield- ing, and (b) the force exerted by the supports on the member if they yield 0.01 in., while the temperature in- creases 70°F. Es = 30 x 106 psi, EA = 10 x 10 psi, as = 6.5 x 10-6(°F), and a = 13.2 X 10 (°F) ¹. Aluminum area, 6 in? 15 in + Steel area, /2 in? PROB. 11.41 C 15 in. Rigid support 11.42 An electric microswitch contains a thin strip of A633 steel and a thin strip of C26800 copper placed side by side as shown. At an ambient temperature of 20°C, the steel strip is 50 mm long and the copper strip is 0.0254 mm shorter than the steel. At what temperature will both strips be the same length? Strain for Axial Loads: Hooke's Law 11.9 STRAIN AND STRESS DISTRIBUTIONS: SAINT- VENANT'S PRINCIPLE W 261 P Homebanking 35°F {" milConnect - TAP T 38 5:21 PM 2/21/2024 X + 2

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