POLYMER UNIAXIAL CALIBRATOR¶
Sequentially calibrates a polymer material model from uniaxial test data by running a series of LS-DYNA simulations on HPC to identify elastic, crazing, stabilization, hardening, and post-necking parameters. Provide a test engineering stress-strain curve, initial elastic constants, and a specimen input deck; the worker returns a simulation record and a populated response template for downstream KPI extraction.
When to use¶
Tagged: crazing, hardening, hpc, ls-dyna, material_calibration, necking, polymer, sequential_calibration.
Inputs¶
| Label | ID | Type | Default | Required | Description |
|---|---|---|---|---|---|
| Study Name | study_name | text | Polymer Calibration | ✓ | Human-readable label for the calibration study; used as the study record name in the platform (free text, default: ‘Polymer Calibration’). |
| Material Name | material_name | text | Polymer Material | ✓ | Identifier for the polymer material being calibrated; propagated into result records and the generated material card (free text, default: ‘Polymer Material’). |
| TESSC | test_eng_stress_strain | vector | — | ✓ | Engineering stress-strain curve measured from a uniaxial coupon test (vector of paired stress/strain values); this is the reference target for all sequential calibration stages. |
| Elastic Modulus | emod | text | 10 | ✓ | Initial elastic (Young’s) modulus of the polymer in the model’s pressure units (e.g. GPa or MPa); used as the fixed elastic parameter during sequential fitting (default: 10). |
| Poisson Ratio | pr | text | 0.3 | ✓ | Poisson’s ratio of the polymer (dimensionless, 0–0.5); controls volumetric response during the elastic phase (default: 0.3). |
| SLIF | specimen_file | file | — | ✓ | LS-DYNA keyword input file (.k / .key) defining the uniaxial coupon model geometry, boundary conditions, and an initial material curve; the curve referenced by curve_id must be present in this file. |
| Choose Uniaxial Template | template_id | text | 1 | ✓ | Integer ID of the d3VIEW response template to apply to each simulation run for automated KPI extraction (default: 1; select an existing template from the platform). |
| HCIITSFTR | curve_id | text | 1 | ✓ | Integer ID of the stress-strain curve defined inside the specimen LS-DYNA input file that will be replaced/updated during calibration; the curve must already exist in the deck (default: 1). |
| NOPBTNAFTCFC | num_points | text | 5 | ✓ | Number of control points used to parameterise the post-necking portion of the true stress-strain curve; 5 is sufficient for mildly nonlinear behaviour — increase for highly nonlinear post-necking (default: 5). |
| Choose HPC Configuration | hpcconfig_id | remote_lookup | — | ✓ | Platform HPC configuration record (remote_lookup) specifying the cluster, queue, solver version, and resource limits for all LS-DYNA jobs submitted during calibration; must be a valid hpc_settings entry. |
| Execution Type | execution_type | select | test | ✓ | Calibration stage to execute: ‘test’ (dry-run validation), ‘baseline’ (initial forward run), ‘crazing’ (crazing duration identification), ‘stabilization’ (stability identification), ‘hardening’ (hardening identification), or ‘post_necking’ (post-necking hardening); stages are intended to be run sequentially. |
Outputs¶
| Label | ID | Type | Description |
|---|---|---|---|
| Simulation Id | simulation_id | integer | Platform integer ID of the LS-DYNA simulation record created for the executed calibration stage; use this to retrieve results, binout data, or status from the simulation database. |
| Template Id | template_id | integer | Integer ID of the response template instance populated with KPIs from this calibration run; pass to downstream postprocessing or reporting workers to extract and compare curves. |
Disciplines¶
- cae.solver
- engineering.material.calibration
- engineering.material.characterization
- engineering.material.specimen
- platform.hpc_config
- platform.job_submission
Auto-generated from platform schema. Worker id: polymer_uniaxial_sequential_calibration. Schema hash: 593e035280fe. Hand-curated docs in workerexamples/ override this page when present.