Leport et al. 2007

These are simulation setups designed to replicate the tests carried out by Leport et al. (2007). The full reference is provided at the end of this document.

Known issues

• Excessive sliding energy was discovered in this setup. While it was roughly halved with the updates in the present v0.1.3, several modifications targeted at reducing it further are currently being tested and will be released subsequently. However, no major influence on the HBM response is expected.

PMHS reference data overview

There are variants of the hub setups, which are documented by Leport et al. 2007. The setups differ in terms of impact speed and impactor form. The table below provides an overview of the test.

Subject	Impactor impact order	Impactor test #	Impact velocity (m/s)	Mini sled impact order	Mini sled test #	Mini sled velocity (m/s)
571	1st	IMP550	5.1	2nd	PCHI1740	4.0
574	1st	IMP558	3.5	2nd	PCHI1748	3.3
575	1st	IMP559	3.7	2nd	PCHI1749	3.4
576	1st	IMP560	3.9	2nd	PCHI1750	3.3
577	1st	IMP561	3.7	2nd	PCHI1751	3.5
579	1st	IMP562	3.5	2nd	PCHI1756	3.4
583	2nd	IMP563	3.8	1st	PCHI1777	3.5
585	2nd	IMP564	3.8	1st	PCHI1776	3.5

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

Subject Number	Weight (kg)	Height (cm)	Age (yrs)
571	75	167	79
574	80	167	75
575	59	156	72
576	80	176	73
577	66	162	76
579	55	159	87
583	77	172	82
585	64	158	89
Average	69.5	166	79.1

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 when using LS-Dyna) in an appropriate time frequency!

Detailed guides with illustrations is provided in Documentation_Hub.pdf and Documentation_Minisled.pdf.

Please report all new issues you encounter.

Directory structure

• Jupyter notebooks for postprocessing results using Dynasaur:
• Hub
• Minisled

leport_2007
│   00_Master_Hub.k
│   00_Master_Minisled.k
│   Documentation_Hub.pdf
│   Documentation_Minisled.pdf
│   Leport_2007_assessment_Hub.ipynb
│   Leport_2007_assessment_Minisled.ipynb
│   LICENSE
│   README.md
│   Version vX.X.X.md
│
├───data
│   ├───examples
│   │   ├───Hub
│   │   │       05_THUMS_v41_50M_Hub.gif
│   │   │
│   │   └───Minisled
│   │           05_THUMS_v41_50M_Minisled.gif
│   │
│   ├───experiment
│   │       Hub.csv
│   │       Minisled.csv
│   │
│   ├───metadata
│   │   │   00_Leport_env_ID.def
│   │   │   00_Leport_hub_ID.def
│   │   │   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_hub.def
│   │   │   05_HBM.def
│   │   │   ls_user_function.py
│   │
│   └───processed
│       ├───figures
│       │   ├───Hub
│       │   └───Minisled
│       │
│       └───sim_results
│           ├───Hub
│           └───Minisled
├───sim_results
│       ├───Hub
│       │   _copy_your_binouts_here.txt
│       │
│       └───Minisled
│           _copy_your_binouts_here.txt
│
├───_env
│       00_Database_Control.k
│       01_Table.k
│       02a_Footrest.k
│       02_Hub.k
│       02_Minisled.k
│       03_Boundary_Condition_Hub.k
│       03_Boundary_Condition_Minisled.k
│       04_Position_springs.k
│       05_Calculations_Hub.k
│       05_Calculations_Minisled.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
• Contact forces
• Contact force between HBM and hub
• HBM
• Cross section force in pubic symphysis
• Relevant strain data (see above) for pelvis 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

Copyright [2024] OVTO

Acknowledgement

The setup has been developed by the Vehicle Safety Institute at Graz University of Technology to be HBM-neutral. Special thanks to Florian Feist, TU Graz, who developed the original FE model of the minisled setup in 2017.

This work was funded by the research project "QualiPro HBM4VT". We acknowledge the support of all sponsors:

• DYNAmore Gesellschaft für FEM Ingenieurdienstleistungen GmbH, an Ansys Company
• Global Human Body Models Consortium, LLC (GHBMC)
• Humanetics
• SAFER (represented by Autoliv Development AB and Volvo Car Corporation)
• Toyota Motor Europe NV/SA

References

Leport, T., Baudrit, P., Trosseille, X., Petit, P., Palisson, A., & Vallancien, G. (2007). Assessment of the Pubic Force as a Pelvic Injury Criterion in Side Impact. Stapp Car Crash Journal, Vol. 51, 467–488. https://doi.org/10.4271/2007-22-0019