Compute strain Stress-40 MPa Modulus of elasticity=100 MPa
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- 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?A steel riser pipe hangs from a drill rig located offshore in deep water (see figure). (a) What is the greatest length (meters) it can have without breaking if the pipe is suspended in the air and the ultimate strength (or breaking strength) is 550 MPa? (b) If the same riser pipe hangs from a drill rig at sea, what is the greatest length? (Obtain the weight densities of steel and sea water from Table M, Appendix I. Neglect the effect of buoyant foam casings on the pipe.)(a) Solve part (a) of the preceding problem if the pressure is 8.5 psi, the diameter is 10 in., the wall thickness is 0,05 in., the modulus of elasticity is 200 psi, and Poisson's ratio is 0.48. (b) If the strain must be limited to 1.01, find the maximum acceptable inflation pressure
- A structural material has a modulus of elasticity of 8 x 10^6 psi and a modulus of rigidity of 3.2 x 10^6 psi. Find the value of Poisson's ratio.A materila has a modulus of elasticity (E=17 Mpa) and a poissons ratio of 0.27. what is the approximate value of the shear modulus, G?At what value of poisson’s ratio young modulus is equivalent to shear modulus?
- 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 strainWhat is the Poisson's ratio if the ratio of Young's modulus (E) to the shear modulus (G) is 2?Find the final length of the bar of an aluminum alloy with a modulus of elasticity of 68.8 GPa, whose initial length l0 is 1.9 m when a tensile stress of 208.0 MPa is applied.
- With a thick walled cyclinder the inner radius is 0.05m and out radius is 0.2m. The internal pressure is 200 MPa - What is the hoop and radial stress at the inner surface? - What would be a suitaable material for the cyclinder under von mises criterion?A bar of size 3m long, 250 mm wide and 150 mm thick is subjected to pull of 50 kN. Find change in length, breadth and thickness. E= 2 X 10^5 N/mm^2 , Poisson’s ratio= 0.25. Calculate modulus of rigidity and bulk modulus. Also, find volumetric strain and change in volume.Calculate the young’s Modulus in GPa from the data