sin αst

LIST OF ATTACHMENTSSTRUCTURAL ANALYSIS OF BLADES
The stresses are summarised and compared to the limit states in table E.14
174
Compressionparallel
to grain
[MPa]
Compressionperpendicular
to grain
[MPa]
Shear
parallel to
grain
[MPa]
Shear
perpendicular
to
grain
[MPa]
Tension
perpendicular
to
grain
[MPa]
Tension
parallel to
grain
Limit state stress 15 1.6 2.9 0.82 1.0 27
[MPa]
Design stress 0.34 0.01 0.02 0.0 0.01 0.06 0.01 0.03 0.51
Table E.14: Summary of results and comparison to limit states
The limit state stresses are not exceeded by the design stresses and the structural integrity
of the blade is therefore verified for the loads of the present load case.
E.9 Load case G
Figure E.36: Normal stress parallel to fibres in longtitudal (z) direction of the blade