Answer to Question #58920 in Material Science Engineering for Courteney

Question #58920

I have been given values of properties of a CFRP material and asked to calculate a number of matrix (transformation etc). I have done this but I am now asked to calculate the stresses and strains in the 1-2 directions.
Please could you help me? I don't know what equation I should use.
I know to calculate the strains in the x-y direction you use the following;
{εxy }= [s ̅ ]{σxy }
Please could you tell me the matrix to use for;
1. the stresses in the 1-2 directions
2. the strains in the 1-2 directions.
Thank you in advance

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