Warps Task cutting theme:
Exercises 2.82 & 2.83
A vibration isolation unit consists of 2 blocks hard rubber plate attached to an AB and rigid as shown in the figure below. Knowing that a force P = 6 Kips cause deflection d = 1 / 16 inch plate AB, find the modulus of the rubber used.
A unit Vibration isolation consists of 2 blocks of hard rubber with a modulus G = 2.75 ksi attached to a plate and rigid AB, as shown in the figure above. P calling the magnitude of the applied force on the plate and d the corresponding deflection, find the effective spring constant P / d the system.
Exercises 2.84 & 2.85
plastic block shown in the figure is attached to the rigid support and a vertical plate, which applies a force P of 240 kN . Knowing that the plastic used G = 1050 MPa , find a) the deflection of the plate, b) P load to be applied to produce a deflection of 1.5 mm .
Exercises 2.86 & 2.87
Two rubber blocks G = 1.75 ksi are attached to rigid and AB plate, as shown in the figure below. Knowing that c = 4 in. and P = 10 kips , find the minimum allowable size and to block b if the shear in the rubber must not exceed 200 psi and deflection of the plate should be at least 0.1 inches .
Two rubber blocks G = 1.50 ksi are attached to rigid supports and a plate AB, as shown in the figure above. Knowing that b = 8 in. and c = 5 in. , determine the maximum permissible load P and the minimum thickness permissible to block if the shear in the rubber should not exceed 210 psi and deflection of the plate should be at least ¼ inch .
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