Question: | An orthotropic material has the follow- ing properties: E = 7500 ksi, E, - 2500 ksi. G = 1250 ksi, and v=0.25. Determine

| An orthotropic material has the follow- ing properties: E = 7500 ksi, E, = 2500 ksi, G = 1250 ksi, and

| An orthotropic material has the follow- ing properties: E = 7500 ksi, E, - 2500 ksi. G = 1250 ksi, and v=0.25. Determine the principal direction I for the stresses and strains at a point on a free surface where the following strains were measured: E = -400 , 600 , and Y=-500 .

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