An oil of viscosity 1.5 Ns/m² flows between two parallel plates and the maximum velocity of flow is 1.5 m/s. If the shear stress acting at plate is 105 N/m², then the distance between the plates is. mm (round off to two decimal places).
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- Q.7 A cylindrical shell 4 m in diameter, is made of 20 mm thick steel plates. The efficiency of longitudinal joint and circumferential joint are 0.88 and 0.7 respectively. If the maximum permissible tensile stress in the plate is 120 MPa, the safe pressure for the shell is (a) 2.12 MPa (b) 0.84 MPa (c) 1.05 MPa (d) 1.68 MPaAt a point on the surface of an elliptical exercise machine the material is in biaxial stress with og = 3,300 psi, and oy = -1,400 psi, as shown in the figure part a. The figure part b shows an inclined plane aa cut through the same point in the material but oriented at an angle 0. (a) (b) Determine the value of the angle 0 between zero and 90° such that no normal stress acts on plane aa. Round your answer to two decimal places. Round your answers to nearest whole number. psi psiA circular aluminum alloy [E = 70 GPa; α = 22.5 × 10–6/°C; ν = 0.33] pipe has an outside diameter of 225 mm, a wall thickness of 15 mm, and a length of 5.0 m. The pipe supports a compressive load of 670 kN. After the temperature of the pipe drops 48°C, determine: (a) the axial deformation of the pipe. (b) the change in diameter of the pipe.
- Q. No .3 On the free surface of an aluminum [E = 10,000 ksi; v = 0.33] component, the strain rosette shown in the figure was used to obtain the following normal strain data: = -500 µɛ, E = -220 µe, and &e = +600 µɛ. Determine the normal stress that acts along an axis that is rotated at an angle of 0= 45° coun- terclockwise from the positive x axis. 60 60 60A pressure-vessel is fabricated by gluing the circular plate to the end of the vessel as shown in figure below. If the vessel sustains an internal pressure of 0.45 MPa, determine the average shear stress in the glue and the state of stress in the wall of the vessel. 20 mm -450 mm - :10 mmA wire of circular cross section is wound around a drum of 500 mm diameter. Ewire 100 GPa. If the normal stress in the wire material is not to exceed 50 MPa, the radius of the wire cross section must be
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- A homogenous isotropic material of size 20 cm x cm x 20 cm is placed inside a rigid box of internal dimension 20 x 20 x 20 cm. The top of the box is open and the material inside is subjected to a uniform compressive stress of 10 N/mm² from the top. Assuming there is no friction between the surface of contact, find the stresses on the side faces of the material. Also find maximum shear stress, the normal stresses on the plane of maximum shear stress and the change of volume of the material. Young's modulus E is 1 x 105 N/mm² and Poisson's ratio, m = 0.3 for the material. S 10 N/mm² 20 cm 20 cm-2. A copper rod of diameter 12 mm is subjected to a compressive force of 8 kN. The change in diameter happens to be 4.5 x 103 mm. Determine the strain along the length of the material and the Poisson's ratio when E = 110 GPa.A cylindrical steel pressure vessel 400 mm in diameter with a thickness of 20 mm, is subjected to an internal pressure of 4.5 MN/m². Calculate the tangential stress in the steel