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in the following question i am asked to find the state of stress given the state of strain.
http://lh6.ggpht.com/_H4Iz7SmBrbk/SwBtHnG3qkI/AAAAAAAAB9M/rFS_orHMbGo/Capture.JPG
i went about solving this using hookes law
\sigmaxx=E[(1-v)\epsilonxx + v(\epsilonyy+\epsilonzz)]/[(1+v)1-2v)]
using the given
E=30*106
v=0.3
\epsilonx=0.001
\epsilonxy=-1.25*10-3
\epsilony=-0.005
i get
\sigmaxx=-4.6154*104
\sigmayy=-1.8462*105
\sigmazz=-6.9231*104
but as you can see these are not the correct answers according to the question.
can anyone see where i have gone wrong ?
also how do i find \tauxy?
http://lh6.ggpht.com/_H4Iz7SmBrbk/SwBtHnG3qkI/AAAAAAAAB9M/rFS_orHMbGo/Capture.JPG
i went about solving this using hookes law
\sigmaxx=E[(1-v)\epsilonxx + v(\epsilonyy+\epsilonzz)]/[(1+v)1-2v)]
using the given
E=30*106
v=0.3
\epsilonx=0.001
\epsilonxy=-1.25*10-3
\epsilony=-0.005
i get
\sigmaxx=-4.6154*104
\sigmayy=-1.8462*105
\sigmazz=-6.9231*104
but as you can see these are not the correct answers according to the question.
can anyone see where i have gone wrong ?
also how do i find \tauxy?
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