Abaqus Field

Abaqus Fields

Overview

Make an initial or predefined field an explicit contract: source, units, sign convention, coordinates, target region, step, and mapping evidence. A complete mapping is an interface result and does not by itself validate the physics.

When to use

Use when a model starts from a stress, temperature, pore-pressure, velocity, or other spatial field, or when an approved result must be mapped between meshes. Use a separate review for constitutive or equilibrium conclusions.

Inputs

• Field type, source artifact, source step and frame
• Source and target regions, coordinates, units, and sign convention
• Mapping key, tolerance, interpolation or extrapolation rule
• Applicable analysis step and expected compatibility or equilibrium checks

Outputs

Return a field contract, mapping table or algorithm, coverage and missing-point counts, duplicate and extrapolation counts, and a list of physical checks that remain open.

Workflow

1. Identify the field type, source, target, units, coordinates, and activation step before choosing an API object.
2. Define a deterministic source-to-target key and a documented tolerance.
3. Inspect the source read-only and record the selected step and frame.
4. Report coverage, duplicates, missing points, extrapolation, and sign changes.
5. Check equilibrium, compatibility, or conservation requirements appropriate to the field before treating it as an engineering input.

Safety gates

• Do not guess missing coordinates, regions, frames, units, or tolerances.
• Do not write back to a source ODB or alter a read-only historical model.
• Do not treat mapping success as physical validation or solver acceptance.
• Do not hide missing coverage with silent extrapolation.

Example prompts

Review a synthetic pore-pressure mapping contract. List source and target frames, units, coordinate transforms, coverage, extrapolation, and the checks needed before the field can be used in an analysis.

Common failures

• Applying a field in the wrong step or with an inconsistent sign convention.
• Mapping coordinates from different origins or unit systems.
• Accepting a high coverage percentage while missing a critical interface.
• Confusing a successful API call with equilibrium or compatibility evidence.

Acceptance checklist

• Field type, source, step, frame, region, units, and coordinates are explicit.
• Mapping key, tolerance, and extrapolation policy are reproducible.
• Coverage, duplicate, missing, and extrapolation counts are recorded.
• Source data remain read-only.
• Physical review and unresolved assumptions are visible.