steel bar originally 200 mm long is pulled in tension with stress 150 MPa the magnitude of elastic modulus E IS 250 GPa, the magnitude of elongation is O 0.3 mm O 0.6 mm O 1.2 mm O 0.75 mm
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- The data in Table 1.5.3 were obtained from a tensile test of a metal specimen with a rectangular cross section of 0.2011in.2 in area and a gage length (the length over which the elongation is measured) of 2.000 inches. The specimen was not loaded to failure. a. Generate a table of stress and strain values. b. Plot these values and draw a best-fit line to obtain a stress-strain curve. c. Determine the modulus of elasticity from the slope of the linear portion of the curve. d. Estimate the value of the proportional limit. e. Use the 0.2 offset method to determine the yield stress.1. A circular rod of diameter 20 mm and 500 mm long is subjected to a tensile force 45 kN. The modulus of elasticity for steel may be taken as 200 Kn/mm². Fine stress, strain and elongation of the bar due to applied load.Q.2 The bar is made of an aluminium alloy having a stress-strain diagram that can be approximated by the straight line segment shown. Assuming that this diagram is the same for both tension and compression, determine the moment the bar will support if the maximum strain at the top and bottom fibers of the beam is E max = 0.05. 630 560 420 (MPa) 0.006 0.025 0.05 100mm M € (mm/mm) 75mm
- Two polymer bars are connected to a rigid plate at 8, as shown. Bar (1) has a cross-sectional area of 1.42 in.and an elastic modulus of 2180 ksi. Bar (2) hasa cross-sactional area of 1139 in.and anelastic modulus of 4150 ksi. Assume l-23 in., L-41 in, Q-6.7 kips, P-3.7 kips, and R-14.1 kips. Datermine the horizontal deflection of end Crelative to end A P R (1) (2) Answer: uga in.X Your answer is incorrect. Two polymer bars are connected to a rigid plate at B, as shown. Bar (1) has a cross-sectional area of 1.42 in.? and an elastic modulus of 2180 ksi. Bar (2) has a cross-sectional area of 1.139 in.? and an elastic modulus of 4150 ksi. Assume L;-23 in., L2-41 in., Q-6.7 kips, P-3.7 kips, and R-14.1 kips. Determine the horizontal deflection of end Crelative to end A. R (1) (2) P L1 L2 Answer: UCIA - i 0.0725 in.The modulus of elasticity of mild steel is equal to .. .? .... .. a. 2 x 10ʻN/m? a. 2 x 10'N/m 2 b. 2 x 10° N/m 4 c. 2 x 10 N/mm 5 d. 2 x 10 N/mm Check
- SITUATION. As shown in the figure below, a rigid bar with negligible mass is pinned at O and attached to two vertical rods. Assume that the rods were initially stress-free. Allowable stress in steel is 120 MPa and in bronze is 60 MPa. For this problem, a = 1.8m; b = 1.3m; c = 1.7m. b C NANTSELEINE Steel: A = 900 mm² E = 200 GPa L=1.5m Bronze: A=1200 mm² E=83 GPa L=2.0m What is the ratio of the elongation of steel to bronze? O 0.367 O 0.433 O 0.467 0.333The compound bar ABCD has a uniform cross-sectional area of 0.25 in2 When the axial force P is applied, the length of the bar is reduced by 0.018 in. Determine the magnitude of the force P. The moduli of elasticity are 29 x 106 psi for steel and 10 x 106 psi for aluminum.SITUATION. As shown in the figure below, a rigid bar with negligible mass is pinned at O and attached to two vertical rods. Assume that the rods were initially stress-free. Allowable stress in steel is 120 MPa and in bronze is 60 MPa. For this problem, a = 1.8m; b = 1.3m; c= 1.7m. a b I Steel: A 900 mm Bronze: A E 200 GPa E 83 GPa L-2.0m L=1.5m What is the value of P without exceeding the allowable stress of steel, in KN? 230 250 280 340 1200 mm
- The rigid bar 2 m long is supported by a steel rod at the middle B and bronze rods equidistant from both ends at A and C as shown. The properties of the rods are given in the tabulation below. Steel Bronze Allowable stress 140 MPa 120 MPa Modulus of Elasticity, E 200 GPa 83 GPa Area, A 400 mm2 900 mm2 Length, L 1,000 mm What is the required length of the steel rod so the reactions on the three rods are the same? What is the required length of the steel rod so that both the steel and the bronze rods reach their allowable stresses at the same time? What is the maximum permissible load W that the rods can carry?Determine the total elongation of the given elastic strip where its thickness is t and modulus of elasticity is E -0.4 L P 0.6b2.58 Knowing that a 0.02-in. gap exists when the temperature is 75°F, determine (a) the temperature at which the normal stress in the aluminum bar will be equal to 11 ksi, (b) the corresponding exact length of the aluminum bar. 0.02 in. 14 in. 18 in. ਕਰ Bronze A = 2.4 in² E-15 x 105 psi a = 12 x 10-6/"F Aluminum A = 2.8 in² E = 10.6 x 105 psi a = 12.9 × 10-5/"F