Products: ABAQUS/Explicit ABAQUS/CAE
Benefits: Analytical rigid surfaces used in the general contact algorithm provide a smoother surface description that reduces contact noise and is a better approximation of the physical contact constraint. It is no longer necessary to use the contact pair algorithm for analytical rigid surfaces in ABAQUS/Explicit or to replace analytical rigid surfaces with faceted rigid surfaces for modeling contact interactions. Using analytical rigid surfaces instead of rigid surfaces formed by element faces may result in decreased computational cost.
Description: Analytical rigid surfaces can now be used with the general contact algorithm. Many curved geometries can be modeled exactly with analytical rigid surfaces because of the ability to parameterize the surface with curved line segments. The result is a smoother surface description, which can reduce contact noise and provide a better approximation to the physical contact constraint.
When you specify self-contact for a default unnamed, all-inclusive surface, all analytical rigid surfaces in the model are included in the general contact domain. You can refer to analytical rigid surfaces when you specify contact domain inclusions and exclusions, contact property assignments, and contact controls assignments. Contact controls assignments are not supported in ABAQUS/CAE.
Interaction module: InteractionCreate: General contact (Explicit): Included surface pairs: All* with self
“Defining general contact,” Section 15.12.5, in the online HTML version of this manual