The elastic behaviour of material for linear stress and linear strain, is shown in the figure. T...

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The elastic behaviour of material for linear stress and linear strain, is shown in the figure. The energy density for a linear strain of \( 5 \times 10^{-4} \) is \( \mathrm{kJ} / \mathrm{m}^{3} \). Assume that material is elastic upto the linear strain of \( 5 \times 10^{-4} \).
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