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type, title, complexity, domain, created, updated, address, aliases, tags, status, related, sources, source_refs
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| concept | Abaqus Contact Interaction Definition | advanced | computational-mechanics | 2026-06-01 | 2026-06-01 | c-000123 |
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Abaqus Contact Interaction Definition
Definition
Abaqus contact interaction definition is the workflow for declaring which surfaces may interact and whether the interaction is handled by general contact, contact pairs, or contact elements.
How It Works
General contact defines a broad contact domain and then assigns surface attributes and contact properties as needed. Contact pairs define pairwise interactions between specified surfaces. Both approaches use surfaces, but they differ in default formulation, shell thickness treatment, master/slave handling, initial overclosure handling, and product-specific capability.
In Abaqus/Standard, general contact and contact pairs share many underlying algorithms, and an analysis can include both. Contact pairs can still be needed for analytical rigid surfaces, node-based surfaces, small-sliding contact, tied contact, pressure-penetration loading, or local controls.
In Abaqus/Explicit, general contact and contact pairs are separate algorithms. General contact allows broad surface types, eroding bodies, Eulerian-Lagrangian contact, DEM/SPH contact, and simplified setup, while contact pairs provide some behaviors unavailable in general contact.
Why It Matters
Contact setup controls which bodies can interact, which surfaces carry thickness or offsets, how initial overclosures are treated, and which numerical algorithm enforces impenetrability.
Connections
- Finite Element Contact Formulation provides the general interface-modeling context.
- Abaqus Contact Property Models defines what happens once surfaces interact.
- Abaqus Contact Formulations and Enforcement explains the numerical enforcement branch.
- Abaqus Standard Contact Elements covers specialized contact elements when surface-based contact is not appropriate.