40-mm sides glass polymer fibers composite cube shown in Figure.2. The Glass polymer fibers aligned in the x  direction. The cube is constrained against deformations in the ? and ? directions and is subjected to a tensile load  of 60 ?? in the x direction. Estimate the strain, change in length and stresses in ?, ?, and ? directions as well as  determine the volumetric strain. Illustrate the effect of three-dimensional strain by constructing appropriate  sketches (before and after deformation for both cube and fibers, assume the fibers have radius of ?). Repeat the  analysis for lower value of tensile load and higher value in the range of [20 -100 KN] and comment on the overall

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Strain energy

The term strain indicates the variation in an object's length, area, and volume when the object is subjected to an external force. The external force may be of normal, shear, moment, torque, etc. The strain in an object depends on the types of external force and cross-section of the object. Mathematically, the evaluation of strain can be obtained with the help of elastic constants.