| { |
| "title": "Automotive Underbody Panel Impact Dataset", |
| "version": "1.1.1", |
| "release_status": "public-release", |
| "resource_type": "dataset", |
| "total_cases": 1500, |
| "geometries": [ |
| "floorfrontdriver", |
| "floorfrontR", |
| "trunkfloor" |
| ], |
| "cases_per_geometry": 500, |
| "states_per_case": 17, |
| "split": { |
| "seed": 12345, |
| "train": 400, |
| "validation": 50, |
| "test": 50, |
| "note": "same case-ID lists, independent simulations per geometry" |
| }, |
| "fields": { |
| "inputs": [ |
| "fixed finite-element mesh", |
| "impact_xyz", |
| "velocity_xyz", |
| "mass_ratio", |
| "material_young_mpa", |
| "material_poisson" |
| ], |
| "outputs": [ |
| "17-state nodal 3D displacement", |
| "17-state shell von Mises effective stress, maximized over through-thickness integration points" |
| ] |
| }, |
| "units": { |
| "status": "SPECIFIED", |
| "system": "tonne-mm-s-N", |
| "coordinate": "mm", |
| "displacement": "mm", |
| "time": "s", |
| "velocity": "mm/s", |
| "effective_stress": "MPa", |
| "young_modulus": "MPa", |
| "impactor_mass": "tonne", |
| "impactor_density": "tonne/mm^3", |
| "mass_ratio": "dimensionless", |
| "theta_phi": "degree" |
| }, |
| "license": "MIT", |
| "doi": null, |
| "creators": [ |
| "Anonymous Authors" |
| ], |
| "source_model": { |
| "name": "2020 Nissan Rogue finite-element model", |
| "developer": "CCSA, George Mason University", |
| "sponsor": "NHTSA", |
| "exact_version": "Version 3, released August 2024", |
| "official_page": "https://www.ccsa.gmu.edu/models/2020-nissan-rogue/" |
| }, |
| "geometry_metadata": { |
| "floorfrontdriver": "floorfrontdriver_geometry.json", |
| "floorfrontR": "floorfrontR_geometry.json", |
| "trunkfloor": "trunkfloor_geometry.json" |
| }, |
| "simulation": { |
| "solver": "LS-DYNA SMP single precision R12 via ANSYS v221 lsdyna_sp.exe", |
| "exact_r12_subbuild_retained_for_every_case": false, |
| "ncpu": 8, |
| "memory": "400m", |
| "termination_time_s": 0.03, |
| "d3plot_nominal_interval_s": 0.0002, |
| "gravity_global_z_mm_per_s2": 9810.0, |
| "boundary_condition": "topological outer-boundary nodes fixed in all six degrees of freedom", |
| "contact": "CONTACT_AUTOMATIC_SURFACE_TO_SURFACE_ID", |
| "static_friction": 0.15, |
| "dynamic_friction": 0.15 |
| }, |
| "impactor": { |
| "type": "rigid spherical shell", |
| "part_id": 9636, |
| "section_id": 9636, |
| "material_id": 174, |
| "material_model": "MAT_RIGID", |
| "radius_mm": 12.5, |
| "initial_gap_mm": 5.0, |
| "elform": 2, |
| "shrf": 0.833333, |
| "nip": 3, |
| "shell_thickness_mm": 0.1, |
| "reference_nominal_mass_tonne": 0.01, |
| "reference_density_tonne_per_mm3": 5.205e-05, |
| "mass_scaling": "impactor_mass = reference_nominal_mass_tonne * mass_ratio", |
| "density_scaling": "impactor_density = reference_density_tonne_per_mm3 * mass_ratio" |
| }, |
| "design": { |
| "method": "seven-dimensional constrained Latin hypercube with maximin selection over 128 trials", |
| "dimensions": ["position_x", "position_y", "impact_speed", "mass_ratio", "theta", "phi", "material_class"], |
| "impact_speed_mm_per_s": [1732.05, 5196.15], |
| "mass_ratio": [0.75, 1.25], |
| "theta_deg": [0.0, 15.0], |
| "phi_deg": [0.0, 360.0], |
| "minimum_boundary_distance_mm": 80.0, |
| "seeds": { |
| "floorfrontR": 20260728, |
| "trunkfloor": 20260723, |
| "floorfrontdriver_initial": 20260721, |
| "floorfrontdriver_extensions": 20260722 |
| } |
| }, |
| "temporal_sampling": { |
| "raw_nominal_interval_s": 0.0002, |
| "compact_stride": 10, |
| "append_final_state": true, |
| "retained_indices": [0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 151], |
| "peak_time_definition": "discrete argmax of valid-node displacement magnitude over retained states" |
| } |
| } |
|
|
