A Product_curve_space is a Product_feature_space that consists of a set of curves within a Product_specification_or_set. These curves can change their positions and shapes as the Product_specification_or_set moves or deforms.
NOTE - A shell view of a structure is a Product_curve_space. Each member of the space is a fibre that runs from the bottom to the top surface of the shell.
The fibres are usually chosen so that they are normal to a reference surface for the structure, for a reference state of the structure.
EXPRESS specification:
*) ENTITY Product_curve_space SUBTYPE OF (Product_feature_space); END_ENTITY; (*