cross-ply laminate twisting issue-help

[mapi]

Hi,
Here is a two-layer laminate (0 degree/90 degree, same thickness, in x-y plane), and it is only subjected a uniaxial loading at x-direction. As a result, the laminate will twist from the calculation by using the constitutive realtion: curvature Kx is not zero, and curvature Ky is zero.
However, non-zero Kx means that the laminate bends in the x-direction, right? But in fact, the laminte should
bend in y-drection. What happens?

Thanks,

Mapi

 

[SWComposites]

1) the laminate will bend under axial load, not twist
2) it will bend in both x and y directions. the y-direction bending is analogous to in-plane poisson's ratio contraction under axial load.

 

[mapi]

Thanks a lot. The laminate will bend in both x- and y-directions.