Question: A 4.0-inch cube of concrete (E = 3.0 ( 106 psi, v = 0.1) is compressed in biaxial stress by means of a framework that

A 4.0-inch cube of concrete (E = 3.0 ( 106 psi, v = 0.1) is compressed in biaxial stress by means of a framework that is loaded as shown in the figure.
Assuming that each load equals 20 k, determine the change (V in the volume of the cube and the strain energy U stored in the cube.

F F

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