Hello, what's the difference between abaqus shell stretching and flat surface? The difference between abaqus shell stretching and plane stretching is that:

1, abaqus shell stretching unit has six degrees of freedom, and abaqus shell plane has only three degrees of freedom.

2.abaqus shell stretching is based on slab bridge theory. When the corresponding plate and shell assumptions are satisfied, the solution of the problem can be well obtained with a small number of elements (3D becomes 2D), and the plane can directly calculate the displacement, deformation and stress without introducing the assumptions of plate and shell theory.