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[ATM] PLOP Q's: YM for Plate is low; Why no shear modulus?

Hi all,

A couple questions, in no particular order, stemming
from a discussion on another forum (CN):

1)  Where did the 60 GPa value of Young's modulus for
plate come from?  Most of the values I can find are
around 70 GPa.  For other materials (Pyrex, fused
silica) the values look appropriate.

2)  If, as Toshimi Taki states (S&T April '96 p 77)
that shear dominates deformation for many-point cells,
why is there no value for shear modulus for the FEM? 
Is it calculated from Young's modulus and Poisson
ratio?  I admit my relative ignorance in this field,
but I know there are people on the list who are quite
expert. :)

Best,
Mark


       
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