6- If the original length of steal rod is equal to AL /2 with strain value is 3AL find the change in length ? (A.0.66m,,B.0.066m,,C.0.606m)
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- .4 The stresses on an clement arc known to be sx= 120 MPa, sy= 100 MPa, and txy= 75 MPa. Find the stresses on an inclined section through the element at an angle ? = 45°.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 copper rod of length L = 18.0 in. is to be twisted by torques T (see figure) until the angle of rotation between the ends of the rod is 3.0°. (a) If the allowable shear strain in the copper is 0.0006 rad, what is the maximum permissible diameter of the rod? (b) If the rod diameter is 0.5 in., what is the minimum permissible length of the rod?
- A spherical balloon is filled with a gas. The outer diameter of the balloon is 20 in. and the thickness is 0,012 in. Calculate the maximum permissible pressure in the balloon if the allowable tensile stress and the allowable shear stress in the balloon are 1 ksi and 0.3 ksi, respectively.If the allowable normal stress is 120MPa and the allowable shear stress is 60MPa, what is the diameter (mm) of the A premium?The anchor opposite is made of Cr-Ni steel. Thereelastic limit is 520 Mpa. What should be the minimum diameter inanchor shear if the load F is 50kN? Consider a safety factor of 2.Please note that the safety factor is applied tothe elastic limit.
- In order to obtain the residual stress, is it necessary to know the strain in each segment due to the loading?Two square bars (15mm thick) are bolted together as shown. Volt's allowable shear stress is 90 MPa, allowingCompression stress is 150 MPa.a) At this point, what is the minimum diameter of the bolt when the tensile force P=31 kN is applied?b) If the bolt is 20 mm in diameter, what is the maximum permissible load?A compressive load of 219 kN is resisted by a rectangular strut which has one side measuring 83 mm. If the stress in the strut is 164 909 kPa, what is the length of the other side of the strut?
- A rosette consisting of 3 gages forming, respectively, angles of θa, θb and θc with the x-axis is attached to the free surface of machine components made of material with a given Poisson’s ratio v and Modulus of elasticity E as shown in Fig. 6. Take note that strain values given above are the gage readings and not principal strains. PLEASE ANSWER I,G,HDetermine the natural strain at point B for the given figure,i need correct solution ASAPThe normal stress in a piece of structural member is 300 MPa. If the modulus of rigidity G is 85 GPa,