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Fig. 5


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Influence of the exponent m (left) and n (right) on the graph of the axial stress vs. the axial strain in a uniaxial compression test (p 0 = 0). The values of m and n are indicated in red on the graph. In the left figure where m varies, one takes n = 1/2, whereas on the right figure where n varies, one takes m = 2. In all cases R1 = 0.1E0.

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