Homework Answers
APL 1/2 x 2 steel bar with nu = -0.33 and E - 29000 ksi is...
APL 1/2 x 2 steel bar with nu = -0.33 and E - 29000 ksi is axially loaded is compression with a load of P-40k. The lateral strain in the bar due to the Poisson's effect is: O 4.55 x 10-4 0 -4.55 x 10-4 0 4,978 x 10-4 O 4.978 x 10-4
Part B Calculate the load II Review A square steel bar has a length of 2.2...
Part B Calculate the load II Review A square steel bar has a length of 2.2 ft and a 1.5 in by 1.5 in cross section and is subjected to axial compression. Under load, the thickness becomes 1.50032 in . If the modulus of elasticity is E = 2.9x 104 ksi and Poisson's ratio is v = 0.31; what is the magnitude of the load that was applied to the bar? Learning Goal To use Poisson's ratio and Hooke's law...
Please answer questions 1 - 9. Be sure to circle final answers. Thank you! 6. Steel...
Please answer questions 1 - 9.
Be sure to circle final answers.
Thank you!
6. Steel Column Analysis Span B -- -- -- For the given axially loaded steel W-section, determine the maximum floor live load capacity, P LL. Assume the column is pinned top and bottom: K = 1.0, and there is no intermediate bracing. Use AISC-LRFD steel equations to determine phi Pn and the load. E = 29000 ksi. Span A -3- DATASET: 1 -2- W-section Fy Span...
1. (5 pts) If a steel bar subjected to uniaxial tension enters into t the plasticity...
1. (5 pts) If a steel bar subjected to uniaxial tension enters into t the plasticity region of the stress-strain curve, which of the following statement is ALWAYS true? (select all that apply) a. Stress in the bar has exceeded yielding strength: b. Stress in the bar has exceeded proportional limit; c. The total strain can d. The plastic strain can be fully recovered if tensile load is fully released; be fully recovered if tensile load is fully rel released;...
Question 10 4 pts A 60mm tall by 16mm wide by 2mm thick (into the paper)...
Question 10 4 pts A 60mm tall by 16mm wide by 2mm thick (into the paper) rectangular test specimen carries an axial load of 1200N. The axially oriented instrumentation measures an elongation of 0.014mm over a gage length of 26mm. The transversely oriented instrumentation measures a contraction of 0.0018mm over a gage length of 10mm. The loading remains in the linearly elastic range. 16 mm 26 mm 60mm Il 10 mm The transverse strain in the specimen is most nearly...
A 3 m rigid bar AB is supported with a vertical translational spring at A and a pin at B The bar is subjected to a linearly varying distributed load with maximum intensity g Calculate the ver...
A 3 m rigid bar AB is supported with a vertical translational spring at A and a pin at B The bar is subjected to a linearly varying distributed load with maximum intensity g Calculate the vertical deformation of the spring if the spring constant is 700 kN/m. (ans: 21.43 mm) 2. A steel cable with a nominal diameter of 25 mm is used in a construction yard to lift a bridge section weighing 38 kN. The cable has an...
2. Two stainless steel plate 10 mm thick are subjected to a constant pressure of 1...
2. Two stainless steel plate 10 mm thick are subjected to a constant pressure of 1 bar under vacuum conditions for which there is an overall temperature drop of 100°C across the plate. What would be effect of loading silicone oil on metallic interface? TABLE 3.1 Thermal contact resistance for (a) metallic interfaces under vacuum conditions and (b) aluminum interface (10-um surface roughness, 105 Nm2 with different interfacial fluids [1 Thermal Resistance, Rzc x 10 (m2-K/W) (a) Vacuum Interface Contact...
Page 5 ofs Question2 (10 pts.) The stress-strain curve for a nonlinear, perfectly elastic material is...
Page 5 ofs Question2 (10 pts.) The stress-strain curve for a nonlinear, perfectly elastic material is shown below. A sample of the material is loaded until the stress reaches the value at Point B, after which the sample is unloaded to zero stress. What is the approximate permanent deformation in material? (MPa) 125 100 75ト 50 25 A 5 10 15 20 25 30 35 40 (x 10-4) (A) 0 (B) 0.001 (C) 0.002 (D) 0.003 Support your answers with...
1.3 127 5.3 3.(10 pts) A cold storage room (10 m x 10 m x 10 m) is being maintained at 2 °C using a vapor compression refrigeration system that uses R-134a. The evaporator and condenser temperatu...
1.3 127 5.3 3.(10 pts) A cold storage room (10 m x 10 m x 10 m) is being maintained at 2 °C using a vapor compression refrigeration system that uses R-134a. The evaporator and condenser temperatures are -20 and 40°C, respectively. The walls and ceiling of the storage room is constructed of 15 cm thick concrete (thermal conductivity-1.37 WIm K]) and 4.3 cm thick insulation (thermal conductivity-0.04 W/[m K). The outside insulation surface temperature of the walls (or ceiling)...
Material Steel Aluminum Table 1: Properties of Materials ET GI ση ksi TGPaksi GPa Iksi MPa...
Material Steel Aluminum Table 1: Properties of Materials ET GI ση ksi TGPaksi GPa Iksi MPa 107F 107 29(109) 200 11(10) 77 90 600 6.5 12 10(109) 67 3.8(10%) 26 40 270 1 3 2 3 10.28 0.33 Equation Sheet for Midterm Exam 1 -= 7=64 s-les-Et tany z2 = -=[ Er = a(AT) 0 = Eer p = EyL 06 = 0, casº o = 3 (1 + cos 20) == -sin® cos = (sin 20) U =w =...
APL 1/2 x 2 steel bar with nu = -0.33 and E - 29000 ksi is axially loaded is compression with a load of P-40k. The lateral strain in the bar due to the Poisson's effect is: O 4.55 x 10-4 0 -4.55 x 10-4 0 4,978 x 10-4 O 4.978 x 10-4
Part B Calculate the load II Review A square steel bar has a length of 2.2 ft and a 1.5 in by 1.5 in cross section and is subjected to axial compression. Under load, the thickness becomes 1.50032 in . If the modulus of elasticity is E = 2.9x 104 ksi and Poisson's ratio is v = 0.31; what is the magnitude of the load that was applied to the bar? Learning Goal To use Poisson's ratio and Hooke's law...
Please answer questions 1 - 9.
Be sure to circle final answers.
Thank you!
6. Steel Column Analysis Span B -- -- -- For the given axially loaded steel W-section, determine the maximum floor live load capacity, P LL. Assume the column is pinned top and bottom: K = 1.0, and there is no intermediate bracing. Use AISC-LRFD steel equations to determine phi Pn and the load. E = 29000 ksi. Span A -3- DATASET: 1 -2- W-section Fy Span...
1. (5 pts) If a steel bar subjected to uniaxial tension enters into t the plasticity region of the stress-strain curve, which of the following statement is ALWAYS true? (select all that apply) a. Stress in the bar has exceeded yielding strength: b. Stress in the bar has exceeded proportional limit; c. The total strain can d. The plastic strain can be fully recovered if tensile load is fully released; be fully recovered if tensile load is fully rel released;...
Question 10 4 pts A 60mm tall by 16mm wide by 2mm thick (into the paper) rectangular test specimen carries an axial load of 1200N. The axially oriented instrumentation measures an elongation of 0.014mm over a gage length of 26mm. The transversely oriented instrumentation measures a contraction of 0.0018mm over a gage length of 10mm. The loading remains in the linearly elastic range. 16 mm 26 mm 60mm Il 10 mm The transverse strain in the specimen is most nearly...
A 3 m rigid bar AB is supported with a vertical translational spring at A and a pin at B The bar is subjected to a linearly varying distributed load with maximum intensity g Calculate the vertical deformation of the spring if the spring constant is 700 kN/m. (ans: 21.43 mm) 2. A steel cable with a nominal diameter of 25 mm is used in a construction yard to lift a bridge section weighing 38 kN. The cable has an...
2. Two stainless steel plate 10 mm thick are subjected to a constant pressure of 1 bar under vacuum conditions for which there is an overall temperature drop of 100°C across the plate. What would be effect of loading silicone oil on metallic interface? TABLE 3.1 Thermal contact resistance for (a) metallic interfaces under vacuum conditions and (b) aluminum interface (10-um surface roughness, 105 Nm2 with different interfacial fluids [1 Thermal Resistance, Rzc x 10 (m2-K/W) (a) Vacuum Interface Contact...
Page 5 ofs Question2 (10 pts.) The stress-strain curve for a nonlinear, perfectly elastic material is shown below. A sample of the material is loaded until the stress reaches the value at Point B, after which the sample is unloaded to zero stress. What is the approximate permanent deformation in material? (MPa) 125 100 75ト 50 25 A 5 10 15 20 25 30 35 40 (x 10-4) (A) 0 (B) 0.001 (C) 0.002 (D) 0.003 Support your answers with...
1.3 127 5.3 3.(10 pts) A cold storage room (10 m x 10 m x 10 m) is being maintained at 2 °C using a vapor compression refrigeration system that uses R-134a. The evaporator and condenser temperatures are -20 and 40°C, respectively. The walls and ceiling of the storage room is constructed of 15 cm thick concrete (thermal conductivity-1.37 WIm K]) and 4.3 cm thick insulation (thermal conductivity-0.04 W/[m K). The outside insulation surface temperature of the walls (or ceiling)...
Material Steel Aluminum Table 1: Properties of Materials ET GI ση ksi TGPaksi GPa Iksi MPa 107F 107 29(109) 200 11(10) 77 90 600 6.5 12 10(109) 67 3.8(10%) 26 40 270 1 3 2 3 10.28 0.33 Equation Sheet for Midterm Exam 1 -= 7=64 s-les-Et tany z2 = -=[ Er = a(AT) 0 = Eer p = EyL 06 = 0, casº o = 3 (1 + cos 20) == -sin® cos = (sin 20) U =w =...
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