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C-NCAP Far Side Protocol 2024 Virtual Assessment Certificate

C-NCAP Far Side Protocol 2024 Virtual Assessment Certificate (prerequisite for virtual airbag symmetry check)

This page describes the C-NCAP Far Side Protocol 2024 Virtual Assessment Certificate REPORTER templates which can be used to determine if the correlation between the physical "Side Pole impact" and the virtual "Side Pole impact" is close enough to achieve the Virtual Assessment Certificate. This is a prerequisite is opting to conduct a virtual airbag symmetry check. You can also use SimVT to perform the correlations and check interactively.

Introduction

The C-NCAP Virtual Far Side 2024 protocol requires correlation fitting between simulation and test data to validate the virtual (simulation) models before they can be used to compute an injury score. 


If the vehicle contains centre console airbags then there is a requirement to conduct an airbag symmetry assessment to ensure that the airbags are effective when the vehicle is struck from either side (not just the Driver side). The airbag performance is implicitly checked for a driver side impact when the front passenger injury from the physical "Side Pole impact" is assessed according to the dual occupant scenario. However, a "Far Side Pole impact" where the driver is assessed is also required for the airbag symmetry check.


OEMs have the option to perform a physical or virtual "Far Side Pole impact". If virtual assessment is chosen the a virtual assessment certificate is required to validate the simulation model. The C-NCAP Far Side Protocol 2024 Virtual Assessment Certificate REPORTER templates can be used to determine if the correlation between the physical "Side Pole impact" and the virtual "Side Pole impact" is close enough to achieve the Virtual Assessment Certificate.


There are two C-NCAP Far Side Protocol 2024 Virtual Assessment Certificate REPORTER templates that support the two possible variants of front passenger respectively:

  • If your physical "Side Pole impact" was conducted with a WSID driver and WSID front passenger then you will need to set up a virtual  "Side Pole impact" (Ansys LS-DYNA simulation) which also has a WSID driver and WSID front passenger and you will need to use the C-NCAP Far Side Protocol 2024 Virtual Assessment Certificate (WSID Driver, WSID Passenger) REPORTER template to check if you will meet Virtual Assessment Certificate requirements.
  • If your physical "Side Pole impact" was conducted with a WSID driver and ES-2re front passenger then you will need to set up a virtual  "Side Pole impact" (Ansys LS-DYNA simulation) which also has a WSID driver and ES-2re front passenger and you will need to use the C-NCAP Far Side Protocol 2024 Virtual Assessment Certificate (WSID Driver, ES-2re Passenger) REPORTER template to check if you will meet Virtual Assessment Certificate requirements.

Both C-NCAP Far Side Protocol 2024 Virtual Assessment Certificate REPORTER templates can be run interactively or in batch mode to generate the REPORT and the instructions for running SimVT REPORTER Templates can be found here.

If the template is successfully generated it will show a report summarising the the sensor scores for all the channels required to obtain the Virtual Assessment Certificate (C-NCAP Appendix H.1.2.2.2). The report also contains the correlation graphs for each channel so that you can inspect any channels which perform poorly. Additionally, a SimVT settings file (REPORTER_settings.simvt) is created which can be loaded in to the SimVT workflow tool to interrogate the results interactively.

Before using the REPORTER template with Ansys LS-DYNA data you should have defined the occupant and structures user data required for your model in PRIMER (see Automotive Assessments PRIMER for details).

Report Pages

Page 1 contains a summary of the results for all the assessed and monitored channels. It shows the PASS/FAIL status of the correlation fitting index. In the example image below, the "Front Passenger Head Acceleration" sensor score fails to exceed the 0.5 threshold so the correlation fitting index is a FAIL which means that the Virtual Assessment Certificate will not be awarded.


The subsequent pages show a table of the scores and the corridor plots for each sensor.

The C-NCAP Far Side Protocol 2024 Virtual Assessment Certificate (WSID Driver, WSID Passenger) REPORTER template has 3 sensor pages, one for each sensor:

  1. "Driver Head Acceleration"
  2. "Front Passenger Head Acceleration"
  3. "Front Passenger T4 Acceleration"

The C-NCAP Far Side Protocol 2024 Virtual Assessment Certificate (WSID Driver, ES-2re Passenger) REPORTER template has 4 sensor pages, one for each sensor:

  1. "Driver Head Acceleration" (shown in the image below)
  2. "Front Passenger Head Acceleration"
  3. "Front Passenger T1 Acceleration"
  4. "Front Passenger T12 Acceleration"


The final page of the report contain a table showing the detailed results for each correlation so that they can all be viewed in one place.



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