Fig. 8.29. Deformation of a cubical element under load. The strain in the X direction will then be i-^&t change in length \ dx J


original length du dx dv

9y dw

Consider now Fig. 8.30 which shows the deformations in the XY plane enlarged.

Shear strains are defined as angles of deformation or changes in angles between two perpendicular segments. Thus yxv is the change in angle between two perpendicular segments i.e.

Similarly, and

0 0

Post a comment