The Bending Curvature result shows the predicted amount of curve on the part.
A large bending curvature value indicates a large bend in the part.
The Bending Curvature result is given by the difference between the top and bottom shrinkage of an element divided by the thickness of the element:
is the bending curvature result 
is the top shrinkage of an element 
is the bottom shrinkage of an element 
is the thickness of the element
Using this result
As can be seen from the definition of the result shown above, the bending curvature result increases when the difference between the top and bottom shrinkages increases, and when the part thickness decreases. The largest bending curvature values therefore occur in thin sections of the part, with large differences in shrinkage between the top and bottom of the part.
The Bending Curvature result is therefore a useful result to examine when considering warpage problems due to differential cooling. Those areas of the model with larger bending curvature values are more prone to out-of-plane deflections resulting from differential cooling at the top and bottom of the element.