Given: A steel rod (A= 150 mm2) is stretched between two fixed points with a tensile load of 5000 N at 20°C. a.) What will be the stress at-20°C? b.) At what temperature will the stress be zero? Assume a = 11.7 um/m°C, and E = 200 Gpa
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- 3. An aluminum rod is rigidly attached between a steel rod and a bronze rod as shown in the figure. Axial loads are applied at the positions indicated. Find the maximum value of P that will not exceed a stress in steel of 140 MPa, in aluminum of 13.05 ksi, or in bronze of 100 MРа. Aluminum A = 400 mm Bronze A = 200 mm Steel A = 500 mm? 2P 4P 2.5 m 2.0 m 1.5 mPractice 2 A fixed ended steel beam 8m long carries a uniform load 20kN/m and an axial tensile force of 200KN. The properties of steel section is as follows: A = 7800 mm? d = 324 mm Ix = 140x10 mm ly = 16x10 mmt What is the axial stress of the beam, in MPa. What is the actual bending stress in the beam due to uniform load alone acting on the beam, in MPa. -. What is the interaction value if Fb = 210 MPa and Ft = 100 MPa? answer key а.)25.64 Мра b.) 123.43 Мра c.) 0.844A steel rod with cross- sectional area of 150 sq.mm. is stretched between two fixed points. The tensile load at 20 degrees Celsius is 5000N. Assume thermal coefficient = 11.7mm/cm-C and E=200 GPa. a. What will be the stress at-20 degrees celcius? b. At what temperature will the stress be zero?
- A steel bar 30 mm in diameter and 2 m long is encased in a shell of cast iron 5 mm thick. Compute the stress in each material, in MPa, if a compressive axial load of 150 kN is applied to the assembly. For steel, E = 200 MPa and for cast iron, E = 100 %3D GPa ( Select the correct response(s): 29.96 MPa 76.39 MPa 212.21 MPa 106.10 MPa 136.32 MPa 152.79 MPa 59.92 MPa 272.84 MPaA symmetrical framework consisting of three pin-connected bars is loaded by a forceP (see figure). The angle between the inclined bars and the horizontal is a = 52°. Theaxial strain in the middle bar is measured as 0.036.Determine the tensile stress in the outer bars if they are constructed of a copper alloyhaving the following stress-strain relationship:GIVEN: Bar has a cross-sectional area of 4 in? and is placed between two rigid immoveable supports when it is 30.00 inches long at a temperature of -20°F. REQ’D: A) The stress in the bar at 90°F if it were made of steel. Esteel = 10 x 10° psi asteel = 13 x 106/°F B) The final length of the aluminum bar
- A steel rod Is stretched two rigid walls and carries a tensile load of 6000 N to 20°C. Coefficient of thermal expansion a = 11.7 x 10-5 /C and modulus of elastičity 200000 MPa. 7. Which of the following gives the minimum diameter of the rod if the allowable stress is not to exceed 140 MPa at -25°C. a. 15 mm C. 16 mm b. 17 mm d. 18 mm 8. Which of the following gives the total elongation of the steel rod if it has a length of 1.5m. a. 1.00 mm С. 1.02 mm b. 1.04 mm d. 1.06 mm 9. Which of the following gives the strain of the steel rod. a. 0.00067 b. 0.00071 C. 0.00069 d. 0.00073Q.3: A steel rod with a cross sectional area of 150 mm² is stretched between two fixed points. The tensile load at 20°C is 5000 N. a) What will be the stress at -20°C. b) At what temperature will the stress be zero? Assume a-11.7 μm/m . °C and E= 200 GPa?AN ALUMINUM TUBE IS FASTENED BETWEEN A STEEL ROD AND BRONZE ROD AS SHOWN IN THE FIGURE. AXIAL LOADS ARE APPLIED AT THE POSITIONS INDICATED. FIND THE VALUE OF P THAT WILL NOT EXCEED A MAXIMUM OVERALL DEFORMATION OF 5mm OR A STRESS IN THE STEEL OF 120MPa, IN BRONZE OF 130 MPa AND IN ALUMINUM OF 90 MPa. Modulus of Elasticty of Bronze = 80 GPa, Aluminum = 65 GPa and Steel = 210 GPa. 2P P 3P 4P L = 500mm 800 A = 400mm² 900 600 700 C
- Refer to figure STR - 5 Two prismatic bars are rigidly fastened together and support a vertical load of 45kN. The upper bar is of steel having mass density 7750 kg/m^3 , length 10m and cross-sectional area 65 cm^2. The lower bar is of brass having mass density 9000kg/m^3, length 6m and cross-sectional area 50 cm^2. Determine the maximum stress in each material. For steel Es= 200 GN/m^2 and for brass Eb= 100 GN/m^2. I need answer ASAP. Thank you!Axial loads are applied to the compound rod that is composed of an aluminum segment rigidly connected between steel and bronze segments. P = 10 kN a. What is the stress (MPa) in the Bronze material? b. What is the stress in Aluminum in MPa? c. What is the stress in Steel in MPa?2. The bronze bar 3 m long with a cross-sectional area of 350mm2 is placed between two rigid walls. At a temperature of -20 oC, there is a gap of 2.2 mm. Find the temperature atwhich the compressive stress in the bar will be 30 MPa ifthe bar will experience:a. No tensile.b. With an tensile of 5,000 N.Use α = 18.0 x 10-6 /oC and E = 80 GPa.