2) In a static fluid (a) resistance to shear stress is small (b) fluid pressure is zero (c) linear deformation is small (e) viscosity is nil. (d) only normal stresses can exist 3) When the flow parameters at any given instant remain same at every point, then flow is said to be (d) uniform (e) Static. (a) Turbulent (b) Steady state (c) laminar
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- In the bar system in the figure, the material is ideal elasto-plastic and the yield stress is given as σA = 440 Mpa. Since the cross-sectional areas of the rods number one and two are given as A = 250 mm2, find the force P (kN) that will bring the system to the yield point. (a = 5m b = 1m) please fast helpAn elastic panel A fits into the rigid socket B of height h (Young’s modulus E, Poisson’s ratio ν). Determine the stress σx and the value of the displacement υR at the top edge R for a constant pressure p. It is assumed that the elastic panel can move frictionless in the socket mounting.Mechanics of Deformable Bodies. Two solid cylindrical rods AB and BC are welded together at B and loaded as shown. Knowing that d1 5 30 mm and d2 5 50 mm, find the average normal stress at the midsection of (a) rod AB, (b) rod BC.
- In the bar system in the figure, the material is ideal elasto-plastic and the yield stress is given as σA = 440 Mpa. Since the cross-sectional areas of the rods number one and two are given as A = 250 mm2, find the force P (kN) that will bring the system to the yield point. (a = 5m b = 1m)The two sheets of soft plastic are bonded to the central steel strip. Determinethe magnitude of the largest force P that can be safely applied to the steel strip andthe corresponding displacement of the strip. For the plastic, use tw = 10 ksi and G = 800 ksi. Neglect deformation of the steel strip.A 20mm diameter steel wire 150m long, is suspended vertically from one end. It supports a tensible load of 20kn at the lower end. Neglect the weight of the wire Use E= 200,000 Mpa A). Find the stress in the wire in MPa B.)Find the elongation of the wire in mm.
- Figure Q3 (a) shows a cantilevered beam ABC carrying a pure moment of M kN.m at point B. Thecross-sectional area of the beam is shown in Figure Q3 (b). The yield stress of the material is 250 MPa and the material is assumed to behave linearly elastic-perfectly plastic.a) Where is the critical location for the beam and give ONLY ONE (1) reasonb) Determine the moment to initiate yielding in the cross-section of the beamc) Find the value of M that can cause plastic collapse (fully plastic) in the cross-section of the beamat the critical location and sketch the variation of stressd) If the TOTAL DEPTH of the plastic zone to be 20 mm at the critical location, WITHOUT ANYCALCULATION, sketch the variation of stress.The rigid bar is supported by a pin at A and two metal wires,each having a diameter of 4mm.The stress-strain diagram of the steel is given in the Figure below.The lower graph is the zoomed view of the elastic deformation and yielding phases of yielding phases of the stress-strain diagram given by the upper graph.a)Obtain the Young’s modulus of metal.What can you say about the kind of metal considering the Young modulus?If the poınt G is displaced 1.5 mm in vertical direction) b)Determine the forces at wires EB and DC c)the intensity of the distributed load w? d)the final diameters of wires.(Poisson’s ratio is v=0.3)Three aluminum rods support the rigid L-shaped bracket BCF as shown in the figure. Determine the stress in rod DE (express answer in MPa) if rod FG is cooled by 50°C. All three rods have the same cross-sectional area of 1000 mm^2. Use 73.1 GPa and 23 x 10^-6/°C for the modulus of elasticity and the coefficient of thermal expansion of aluminum, respectively.
- Three aluminum rods support the rigid L-shaped bracket BCF as shown in the figure. Determine the stress in rod DE (express answer in MPa) if rod FG is cooled by 50°C. All three rods have the same cross-sectional area of 1000 mm^2. Use 73.1 GPa and 23 x 10^-6 /°C for the modulus of elasticity and the coefficient of thermal expansion of aluminum, respectively.A steel rod of length = 3m, diameter - 300 mm and modulus of elasticity = 200 GPa is inserted into an aluminum tube. The aluminum tube as length = 2999.95 mm, wall thickness of 20 mm and modulus of elasticity of 70 GPa. a.) Determine the deformation of each member due to axial compressive force P-100 KN. b.) Determine the stress in each member. c.) Determine the axial strain if no gap exists. WITH FULL SOLUTION ASAP PLEASEA hollow aluminum tube used in a roof structure has an outside diameter d2= 112mm and an inside diameter d1= 80mm. The tube is 2.80m long, and the aluminum has a shear modulus of G= 28GPa.a. If the tube is twisted in pure torsion by torques acting at the ends, what is the angle of twist, in degrees,when the maximum shear stress is 52MPa?b. What diameter d, in mm, is required for a solid shaft, as shown, to resists the same torque with the same maximum stress?c. What is the ratio of the weight of the hollow tube to the weight of the solid shaft?