A Product_volume_space is a Product_feature_space that consists of a set of finite volumes within a Product_specification_or_set. These finite volumes can change their positions and shapes as the Product_specification_or_set moves or deforms.
NOTE - A lumped parameter view of a structure is a Product_volume_space. Each member of the space is a finite volume within the structure.
EXPRESS specification:
*) ENTITY Product_volume_space SUBTYPE OF (Product_feature_space); END_ENTITY; (*