Find the strain Stress=35.6 MPa Modulus of elasticity=54 MPa
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- A spherical steel pressure vessel (diameter 500 mm, thickness 10 mm) is coated with brittle lacquer that cracks when the strain reaches 150 X 10~ (see figure). (a) What internal pressure p will cause the lacquer to develop cracks? (Assume E = 205 GPa and v = 0.30.) (b) If the strain is measured at 125 x 10-6, what is the internal pressure at that point?A brass plate with a modulus of elastici ty E = 16 X 106 psi and Poisson’s ratio a = 0.34 is loaded in biaxial stress by normal stresses r and cry. (sec figure). A strain gage is bonded to the plate at an angle 4 = 350 If the stress o is 10,700 psi and the strain means used by the gageise = 390 X 106.whatisthcmax- imum in-plane shear stress (Tr, ),. and shear strain (>‘ ).? What is the maximum shear strain (y ) in the x-: plane? What is the maximum shear strain (y ).. in the y-r plane?If an isotropic material has a shear modulus of 125 Gpa and a Poisson's ratio of 0.2, calculate its Young's modulus. Select one: O E= 80 Gpa O E= 450 Gpa O E= 60 Gpa %3D O E= 30 Gpa %3D O E= 300 Gpa %3D If a rubber material is deformed as shown in the following figure, determine the normal strain along diagonal BD.
- For a 60° angle lamina of graphite/epoxy with 70% fibre volume fraction under stresses in global axes as σx = 6 MPa, σy = 2 MPa, and τxy = –4 MPa, and using the properties of the given unidirectional lamina from the book, find the followings; a. Local stresses and strains b. Principal normal stresses and principal normal strains c. Maximum shear stress and maximum shear strainCalculate the modulus of rigidity and bulk modulus of a cylindrical bar of diameter of 25 mm and of length 1.6 m, if the longitudinal strain in a bar during a tensile test is four times the lateral strain. Find the change in volume, when the bar is subjected to a hydrostatic pressure of 100 N/mm?. Take E = 1 x 105 N/mm?.Find the resulting strains in a unidirectional lamina subjected to normal tensile stresses of 20MPa in the longitudinal direction, compressive stress of 5MPA in the transverse direction, and a negative shear stress of 1.0MPa. The lamina properties are: EL =20 GPa, ET = 2 GPa, GLT = 0.7 GPa, and vLT = 0.35.
- When a brass rod of diameter 2 mm is subjected to a tension of Sx10 N, the diameter changes by 3.6x104 cm. Calculate the Poisson's ratio for brass given that the Elastic modulus for the brass is 9x100 N/m and the longitudinal strain for the brass rod is1.96x103 useful equation: Poissons ratio = Lateral strain / Longitudinal strain O 0.63 O 031 O 1.11 O 0,923. Find the young's modulus of a bars a rod of diameter 25 mm and of length 250 mm which is subjected to a tensile load of 50 kN when the extension of the rod is equal to 0.3 mm. And if the modulus of elasticity of the material of the rod is 2x105 N/mm² determine stress, strain and % elongation of the rod.L b F What is the change in length (L) of the titanium bar (E = 16.5E6 psi) given: L = 36 in., b = 3 in., h = 0.25 in, and F = 3 kips Answer to above question is 8.72E-3 in, the shear modulus for the bar is 6.145E6 psi, poisons ratio is 0.343. My question is what is the strain (in macrostrain) in the bar in a direction perpendicular to the direction of the applied force? (Answer is 82.8, I need to understand how to reach this answer.)
- Find the longitudinal strain Change in length=0.45 mm Initial length=1000 mmThe is a rope that just cannot stretch more than 0.6 cm from a tensile force of 500N without breaking. What is the minimum radius that the rope must have if it is .5kg and .6 meters long? The Young’s modulus for this material is 35*10^9 Pa.The length of a wire increases from 1.25 m to 1.2508 m when a load of 12 kg is suspended. The radius of the wire is 0.5 mm. Find the stress, strain and young's modulus of material of the wire. Draw a free body diagram.