Problem 2. A block R of rubber with dimensions a x a x L is confined between the plane parallel walls of a square hole in a steel block, S. A uniformly distributed pressure po is applied to the top of the rubber block by a force F. a a S Derive a formula for the lateral pressure p between a) the rubber and the steel. (Ignore friction between the rubber and the steel, and assume the steel block is rigid in comparison with the rubber.) F b) Derive a formula for the dilatation e of the rubber. c) Derive a formula for the strain energy density u of the rubber. R S ka

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A: Given:To find:Plot the variation of Ex, Gxy, νxy, mx, and my for a lamina.

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Torsion

In mechanical engineering, torque, torsion, and twisting moment are three of the most important concepts which have different meanings. Torque is the consequence of a moment of a force that produces an angular acceleration in a body or induces rotational kinetic energy in a body. For instance, in an automobile, the power transmission shaft is a body that is always under rotation due to the external torque acting on it, this torque is created by the engine.