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Cesari & Bouquet 1990

These are simulation setups designed to replicate the table top tests carried out by Cesari & Bouquet (1190). The full reference is provided at the end of this document.

Known issues

  • The deflection measured on the mid of clavicle does not match with the test data.
  • The definition of the node output on the clavicle was defined to be located at the mid of the clavicle in the simulation. The measurement in the test was located on the clavicle just beneath the belt. To find the exact location of the node beneath the settled belt, a second simulation would be required.

PMHS reference data overview

There are variants of the tabletop setup, which are documented by Cesari & Bouquet (1990). The setups differ in terms of impact speed and the mass of the impactor. Test data is available only from test THC 17. The table below provides an overview of the test.

Subject Impactor mass (kg) Impactor velocity (m/s) (target)
THC 17 22.4 7.78

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

Subject Number Sex Weight (kg) Height (cm) Age (yrs)
THC 11 F 82.5 170 47
THC 12 F 58.5 164 17
THC 13 F 43.0 160 86
THC 19 F 43.0 155 83
Average 56.8 162.3 58.3
Subject Number Sex Weight (kg) Height (cm) Age (yrs)
THC 14 M 82.0 173 69
THC 15 M 69.0 177 60
THC 16 M 62.0 170 59
THC 17 M 75.0 177 71
THC 18 M 47.0 174 67
THC 20 M 63.0 160 70
THC 62 M 53.0 183 72
THC 65 M 41.0 170 71
THC 69 M 56.0 183 40
Average 60.9 174.1 64.3

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!

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

Please report all new issues you encounter.

Directory structure

Jupyter notebook for postprocessing results using Dynasaur:

cesari_1990
│   00_Master_Belt.k
│   Cesari_1990_assessment.ipynb
│   Documentation_Tabletop_Belt.pdf
│   LICENSE
│   README.md
│   Version vX.X.X.md
│
│
├───data
│   ├───examples
│   │       09_THUMS_v41_50M_Belt.gif
│   │
│   ├───experiment
│   │       Belt.csv
│   │
│   ├───images
│   │       Belt_angles.png
│   │
│   ├───metadata
│   │   │   00_Cesari_belt_ID.def
│   │   │   00_Cesari_env_ID.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
│   │   │   03_contact_HBM_table.def
│   │   │   04_belt.def
│   │   │   05a_HBM_belt_deflection.def
│   │   │   06a_HBM_ribs_visualisation.def
│   │   │   06_HBM_ribs_criteria.def
│   │   │   07a_HBM_ribs_NFR_risk_Larsson_2021.def
│   │   │   07b_HBM_ribs_NFR_risk_Larsson_2021_deflection_limits.def
│   │   │   07c_HBM_THUMS_50M_ribs_NFR_risk_Forman2022_3plus.def
│   │   │   07d_HBM_THUMS_50M_ribs_NFR_risk_Forman2022_3plus_deflection_limits.def
│   │   │   ls_user_function.py
│   │
│   └───processed
│       ├───figures
│       │
│       └───sim_results
│
├───sim_results
│       _copy_your_binouts_here.txt
│
├───_env
│       00_Database_Control.k
│       01a_Frame_Belt.k
│       01_Table.k
│       02_Belt.k
│       02_Belt_longer.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
  • Contact forces
  • Contact force between table and HBM (contact interface 2 in the model, using only the torso part of the table)
  • HBM
  • Z-displacement of Thorax_BxS point
  • Z-displacement of point at the mid of the clavicle
  • Relevant strain data (see above) 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] OVTO

Acknowledgement

The setup has been developed by the Vehicle Safety Institute at Graz University of Technology to be HBM-neutral. The setup and the Jupyter notebook are based on the Kent et al. 2004 setup, available in the HBM4VT validation load cases.

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

Reference

Cesari, D., & Bouquet, R. (1990). Behaviour of Human Surrogates Thorax under Belt Loading. In SAE Technical Paper Series. SAE International, 400 Commonwealth Drive, Warrendale, PA, United States.