Strain analysis 41 7
Note that strains are dimensionless.
Transformation of displacement (plane strain)
Say point P moves to P' when deformation takes place. If we know u and
v, can we calculate u' and v' on the new axes x'y' in terms of e?
'#\ 't P'
I U
P
U' = u cos0 + v sin0
V' = v cos0 - u sin0
Transformation of strain (plane strain)
Given E,, 5 and yq (i.e. global components) how do we calculate E:, E; and
y& (the local components)?