1.6-2 A round bar of 10 mm diameter is made of alu- minum alloy 7075-T6 (see figure). When the bar is stretched by axial forces P, its diameter decreases by 0.016 mm. Find the magnitude of the load P. (Obtain the mate- rial properties from Appendix H.)
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- A tensile test was performed on a metal specimen with a diameter of 1 2 inch and a gage length (the length over which the elongation is measured) of 4 inches. The dam were plotted on a load-displacement graph. P vs. L. A best-fit line was drawn through the points, and the slope of the straight-line portion was calculated to be P/L =1392 kips/in. What is the modulus of elasticity?The simple beam shown, 76.2-cm. long ( = a + L + d ), is made of AISI C1022 steel, as rolled, left a forged. At a =25.4 cm , F1 = 1360.5 kg. is a dead load. At d = 25.4 in , F2 = 1088.4 kg. is repeated, reversed load. For N = 1.5 , indefinite life, and h = 3b , determine b and h . (Ignore stress concentration).A steel rod of 30 mm diameter is inserted in a copper tube of external diameter 45 mm and an internal diameter of 37 mm carries a load of W =1750kN. The length of this compound bar is 180 mm. If, ES= 2 × 105 N/mm2and ECu= 1 × 105 N/mm2, calculate the stresses developed in copper and steel.
- The assembly consist of two 10mm diameter red brass C83400 Copper rods AB and CD, a 15mm diameter 304 stainless steel rod EF, and a rigid bar G. The modulus of elasticity for red brass C83400 is 101 GPa for 304 stainless steel 193 GPa. If P= 4.3 kN, determine the horizontal displacement of end F of rod EFAn elastomeric bearing pad consisting of twosteel plates bonded to a chloroprene elastomer (anartificial rubber) is subjected to a shear force V during a static loading test (see figure). The pad has dimen-sions a 5 125 mm and b 5 240 mm, and the elastomer has a thickness t 5 50 mm. When the force V equals 12 kN, the top plate is found to have displaced later-ally 8.0 mm with respect to the bottom plate. What is the shear modulus of elasticity G of thechloroprene?Solve Sample Problem No. 1 using these load values: a. M D =175 kN-m,M L =1 90 kN-m b. Find the maximum design moment so that its tension controlled. (USE c = 3d / 8). Tension steel exactly experiences 0.005 strain.
- A full forming P= 50 kN axial force acts on the part shaped by the machining method made of xCy steel material. The thickness of the part is t= 20 mm and the steel tensile strength is sigma(tensile) = 600 MPa . Calculate the individual fatigue life of the A and B sections of the machine part for 90% reliability. Draw logarithmic S_N diagrams.A brass (? =5.6 ? 10^6 ???) and aluminum (? = 3.7 ? 10^6 ???) cylinders are bonded together at B, and are attached to fixed supports A and C. Determine (a) The torsion in AB, (b) The torsion in BC, (c) The maximum shearing stress in AB (d) The maximum shearing stress in BC.Strength of materials - ENGR 3321 The answer should be: 17.68 kN; 11.8 MN/m2 compressive
- A rigid bar of weight W = 800 N hangs from three equally spaced vertical wires (length L =150 mm, spacing a = 50 mm): two of steel and one of aluminum. The wires also support a load P acting on the bar. The diameter of the steel wires is ds = 2 mm, and the diameter of the aluminum wire is da = 4 mm. Assume Es = 210 GPa and Ea = 70 GPa.(a) What load Pallow can be supported at the midpoint of the bar (x = a) if the allowable stress in the steel wires is 220 MPa and in the aluminum wire is 80 MPa? (See figure part a.)(b) What is Pallow if the load is positioned at x =a/2?(See figure part a.)(c) Repeat part (b) if the second and third wires are switched as shown in the figure part b.USE NSCP 2015 i have get the (1) The depth of the compression block is 196.66 mm. (2) The strain is 0.0092. (3) The moment reduction factor is 1.25.The cantilever beam consists of a rectangular structural steel tube shape [E = 200 GPa; I = 450 × 106 mm4]. Assume P = 50 kN, w = 10 kN/m, LAB = 1.00 m, and LBC = 2.00 m. For the loading shown, determine:(a) the beam deflection at point A.(b) the beam deflection at point B.Determine the component of the beam deflection at point A due to only the uniformly distributed load of w = 10 kN/m.Answer: vA,w = mm. Part 2 Determine the component of the beam deflection at point B due to only the concentrated load of P = 50 kN.Answer: vB,P = mm. Part 3 Determine the component of the rotation angle of the beam at point B due to only the concentrated load of P = 50 kN.Answer: θB,P= rad. Part 4 Determine the component of the beam deflection at point A due to only the concentrated load of P = 50 kN.Answer: vA,P = mm. Part 5 Determine the total beam deflection at point A due to the combined effects of the concentrated…