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Petit et al. 2019

This is a simulation setup designed to replicate the sled tests carried out by Petit et al. (2019). The full reference is provided at the end of this document.

PMHS reference data overview

Sled tests simulating a far side collision.

  • Test speed: 28.7 km/h

The characteristics of all PMHS used in these tests are provided in the table below.

Subject Number Weight (kg) Height (cm) Age (yrs)
736 86 181 74
738 64 161 82
738 63 169 88
739 62 173 73
740 72 172 87
741 66 176 91
Average 69 172 83

Instructions

Follow the General Instructions for setting up your simulations. Make sure that all required outputs are available in the simulation output files (e.g. binout) in an appropriate time frequency!

A detailed guide with illustrations is provided in Documentation.pdf.

Please report all new issues you encounter.

Relevant simplifications

  • In the physical tests, the hands were taped to a bar in front of the PMHS (putting the hands in a position replicating gripping a steering wheel). In the simulation setup, the hands are not repositioned from the HBM default position and not fixated before/during the loading.

Directory structure

M:.
│   00_Master_Sled.k
│   Documentation_Sled.pdf
│   HBM_posture_regression_model.ipynb
│   Petit_2019_assessment.ipynb
│   README.md
│   Version vX.X.X.md
│
├───data
│   ├───examples
│   ├───experiment
│   │       console_fy.csv
│   │       console_fz.csv
│   │       footrest_fy.csv
│   │       footrest_fz.csv
│   │       head_dy.csv
│   │       head_dz.csv
│   │       lap_belt.csv
│   │       posture_regression_model_landmarks_RMSE.csv
│   │       seat_fy.csv
│   │       seat_fz.csv
│   │       shoulder_belt.csv
│   │       stick_figure_template.k
│   │
│   ├───metadata
│   │   │   00_THUMS_v4.1_05F_IDs.def
│   │   │   00_THUMS_v4.1_50M_IDs.def
│   │   │   00_VIVA+_50F_IDs.def
│   │   │   01_units_ms_mm_kg.def
│   │   │   01_units_s_mm_ton.def
│   │   │   02_quality_criteria.def
│   │   │   04_testbed.def
│   │   │   05_HBM_deflection.def
│   │   │   06a_HBM_ribs_visualisation.def
│   │   │   06_HBM_ribs_criteria.def
│   │   │   07a_HBM_ribs_NFR_risk_Larsson_2021.def
│   │   │   07c_HBM_THUMS_50M_ribs_NFR_risk_Forman2022_3plus.def
│   │   │   ls_user_function.py
│   │   │   Petit_testbed_ID.def
│   │
│   └───processed
│       ├───figures
│       └───sim_results
├───sim_results
│       _copy_your_binouts_here.txt
│
├───_env
│       00_Database_Control.k
│       01_Testbed.k
│       02_Belt.k
│       02_Belt_wider.k
│       03_Boundary_Condition.k
│       04_Position_springs.k
│       05_Calculations.k
│
└───_HBM
        _copy_your_HBM_includes_here.txt

Loadcase specific outputs

Time-history data:

  • Energies
  • Total energy
  • Internal energy
  • Kinetic energy
  • Hourglass energy
  • Added mass (when using mass scaling)
  • Percent increase of added mass (when using mass scaling)
  • Contact forces
  • Contact force between HBM and side structure (centre console) in X and Z
  • Other forces
  • Footrest Y, Z
  • Seat X, Y, Z
  • Shoulder belt (X)
  • Lap belt (X)
  • Sled
  • X, Y, Z coordinates
  • HBM
  • X, Y, and Z coordinates of the nodes in the following locations (cf. documentation slides)
    • Head CoG
    • T1
    • T8
    • L2
    • Pelvis
  • Relevant strain data for each rib over time

License

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Copyright 2024 EuroNCAP

Acknowledgement

The simulation model is based on the WorldSID qualification setup downloaded from https://openvt.eu/EuroNCAP/wsid-model-qualification in January 2024 and adapted to be used in the HBM4VT validation setup Petit et al. 2019.

The setups available here were created by the Vehicle Safety Institute at Graz University of Technology to be HBM-neutral. This work was funded by Euro NCAP.

The Jupyter notebook is loosely based on the notebook for the Viano 1998 loadcase from the VIVA+ validation catalogue, which was prepared by Corina Klug.

References

Petit, P., Trosseille, X., Uriot, J., Poulard, D., Potier, P., Baudrit, P., Compigne, S., Kunisada, M., & Tsurui, K. (2019). Far Side Impact Injury Threshold Recommendations Based on 6 Paired WorldSID / Post-Mortem Human Subjects Tests. Stapp Car Crash Journal, 63, 127–146. https://doi.org/10.4271/2019-22-0005