underbody-impact-data / metadata /trunkfloor_geometry.json
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Document simulation protocol and generation evidence for v1.1.0
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{
"geometry": "trunkfloor",
"data_revision": "review_release_v1",
"cases": 500,
"states_per_case": 17,
"displacement_shape_per_case": [
14440,
17,
3
],
"effective_stress_shape_per_case": [
14589,
17
],
"effective_stress_definition": {
"quantity": "von_mises_effective_stress",
"entity": "shell_element",
"through_thickness_reduction": "max_integration_point",
"ls_prepost_component": "etime 9",
"ls_prepost_label": "Effective Stress (v-m), ip#max",
"integration_point_index_retained": false,
"units": "MPa"
},
"mesh": {
"file": "meshes/trunkfloor_mesh.npz",
"nodes": 14440,
"directed_graph_edges": 58074,
"shell_elements": 14589,
"shell_triangles": 817,
"shell_quads": 13772,
"boundary_nodes": 535
},
"time_value_range": [
0.0,
0.030000614002346992
],
"condition_ranges": {
"impact_x": [
-4327.884765625,
-3648.72900390625
],
"impact_y": [
-406.519287109375,
430.65777587890625
],
"impact_z": [
486.412841796875,
649.58642578125
],
"velocity_x": [
-1266.122802734375,
1200.008056640625
],
"velocity_y": [
-1262.4493408203125,
1177.8699951171875
],
"velocity_z": [
1711.5562744140625,
5177.33935546875
],
"impact_speed": [
1738.4505615234375,
5195.92578125
],
"mass_ratio": [
0.7506378889083862,
1.2490675449371338
],
"impactor_mass": [
0.007506378460675478,
0.012490675784647465
],
"impactor_density": [
3.907069913111627e-05,
6.501397001557052e-05
],
"theta_deg": [
0.0015588899841532111,
14.979633331298828
],
"phi_deg": [
0.16448494791984558,
359.7947998046875
],
"material_young_mpa": [
70000.0,
210000.0
],
"material_poisson": [
0.30000001192092896,
0.3400000035762787
],
"material_index": [
0,
2
]
},
"material_counts": {
"aluminum_rigid": 166,
"steel_rigid": 167,
"titanium_rigid": 167
},
"units": {
"status": "SPECIFIED",
"system": "tonne-mm-s-N",
"coordinate": "mm",
"displacement": "mm",
"time": "s",
"velocity": "mm/s",
"mass": "tonne",
"density": "tonne/mm^3",
"effective_stress": "MPa",
"material_young_field_name": "material_young_mpa",
"angles": "degrees"
},
"case_file_policy": "original compact 17-state .pt bytes preserved"
}