Question

2) An 8-ply Scotchply 1002 laminate [0/30/-30/90]s with a ply thickness $t_p = 0.005$ in is subjected to the in-plane stress resultant $N_{xx} = 1000$ lb/in. a. Determine the strength ratio ($R$) and the critical value of $N_{xx}$ for first ply failure using the Tsai-Wu failure criterion. b. Determine the strength ratio ($R$) and the critical value of $N_{xx}$ for ultimate laminate failure using the Tsai-Wu failure criterion. Give the minimum strength ratio and each layup as you proceed through the problem (consistent with the example problem on page 232 of the notes). Include a summary page showing each successive layup, including the plies that \"failed\" (*), and the corresponding $R$-value (just as shown in the example problem).

          2) An 8-ply Scotchply 1002 laminate [0/30/-30/90]s with a ply thickness $t_p = 0.005$ in is subjected to the
in-plane stress resultant $N_{xx} = 1000$ lb/in.
a. Determine the strength ratio ($R$) and the critical value of $N_{xx}$ for first ply failure using the
Tsai-Wu failure criterion.
b. Determine the strength ratio ($R$) and the critical value of $N_{xx}$ for ultimate laminate failure
using the Tsai-Wu failure criterion. Give the minimum strength ratio and each layup as you
proceed through the problem (consistent with the example problem on page 232 of the notes).
Include a summary page showing each successive layup, including the plies that \"failed\" (*),
and the corresponding $R$-value (just as shown in the example problem).

2) An 8-ply Scotchply 1002 laminate [0/30/-30/90]s with a ply thickness tp = 0.005 in is subjected to the
in-plane stress resultant Nxx = 1000 lb/in.
a. Determine the strength ratio (R) and the critical value of Nxx for first ply failure using the
Tsai-Wu failure criterion.
b. Determine the strength ratio (R) and the critical value of Nxx for ultimate laminate failure
using the Tsai-Wu failure criterion. Give the minimum strength ratio and each layup as you
proceed through the problem (consistent with the example problem on page 232 of the notes).
Include a summary page showing each successive layup, including the plies that f̈ailed(̈*),
and the corresponding R-value (just as shown in the example problem).

Added by Nerea P.

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