Euro NCAP Validation KPI
Euro NCAP VTC Simulation and Assessment Protocol Frontal Impact
This topic focuses on the automation of the Validation Criterion 2 (Assessment Criteria) assessment using REPORTER. You can also use Automotive Assessments to perform the correlation interactively.
Introduction
The Euro NCAP Full Frontal Validation KPI REPORTER Template can be used to perform the Validation 1 & 2 Key Performance Indicator or KPI (Assessment Criteria) Highlighted in Section 5.3.2 in Euro NCAP Crash Protection Virtual Testing. The equations used for the KPI calculations, taken from Section 5.3.2 are shown below:
Section 5.4.1 Mentions the sensors that are required for evaluation for Frontal Impact.
According to section 5.4.2, if \(r_{AC} ≥ 50\%\) then \(d_{AC})\ must be calculated and evaluated for pass/failure determined by Validation Criterion 2 (Assessment Criteria): \(d_{AC} < 30\%\)
For each sensor, the \AC_{limit}\ mentioned is shown in tables in Euro NCAP Crash Protection Frontal Impact Section 3.5 under Lower Performance Limit or LPL.
If the template is successfully generated it will show a report summarising the assessment criterion limits, values, \(r_{AC_{sim}}\), \(r_{AC_{test}}\) and \(d_{AC}\) as well as Full Frontal scores. Note that \(d_{AC}\) will only be calculated if \(r_{AC_{test}}\) is greater than 50%. The graphs for all the assessment data and structures are plotted to allow you to understand the results in more detail.
Firstly, in PRIMER, you should have set up the occupant and structures required for your Simulation model. This can be found in Workflows in the tools menu, then Automotive Assessments and under the Crash Test dropdown find 'Front Sled' and under Version select either 'Validation 1' or 'Validation 2' and fill out the Driver and Structures. Then save the created Workflows data using the Save to File or Save to Model buttons. For more information see the 'Automotive Assessments PRIMER' manual.
Using the REPORTER template
Before using the REPORTER template, you should have defined the occupant and structures user data required for your model in PRIMER (see Automotive Assessments PRIMER for details).
In REPORTER, click the tab and then filter by Front (under Impact location) & Automotive Assessments (under Workflows) and double-click to open the template.
You will first be prompted to select your Test file, this can be .iso, .mme, .chn or .csv format:
Finally you will be prompted for the Simulation (.key) file. Once selected the REPORTER Template will run and produce the results.
REPORTER Results
Page 1 contains all the required assessment data (Values, Far Side Scores, Assessment Criteria Limits, \(r_{AC_{sim}}\), \(r_{AC_{test}}\) and \(d_{AC}\) values) for the Driver compared with the test data. Page 2 has the same information but for the Passenger.
Page 3 through the end of the report contains the same content as the Validation templates, documentation for the validation templates can be found here: Euro NCAP Front Sled 2026 Validation
Running in Batch
The template can also be run in batch mode, specifying the required information through command line arguments.
If your results are in the same directory as the keyword file then you only need to specify the keyword file on the command line and the test file and red zone which are specific to this template:
<reporter_exe> -batch -file=<template_name> -varKEYWORD_FILE=<keyword_file> -varTEST_FILE=<test_file> -varRED_ZONE=<red_zone> -exit
[Add the -pdf, -html, -pptx command line arguments to write the report out in the format you want]
Where:
| reporter_exe | The full path and filename to the REPORTER executable |
|---|---|
| template_name | The full path and filename of the template you want to use. The workflow templates can be found in $OA_INSTALL/workflows/templates/automotive_assessments |
| keyword_file | The full path and filename of the keyword file |
| test_file | The full path to the ISO-MME or CSV file to be used for the Test model |
| red_zone | Distance between the Head CoG and the Red Line |
If the results are in a different folder to the keyword file, you will need to add an extra argument to specify it:
<reporter_exe> -batch -file=<template_name> -varKEYWORD_FILE=<keyword_file> -varTEST_FILE=<test_file> -varRED_ZONE=<red_zone> -varRESULTS_DIR=<results_dir> -exit
Where:
| results_dir | The full path to the results directory |
|---|
Similarly if you want to output the images and other files generated by REPORTER to a different folder than the default, you will need to add an extra argument:
<reporter_exe> -batch -file=<template_name> -varKEYWORD_FILE=<keyword_file> -varTEST_FILE=<test_file> -varRED_ZONE=<red_zone> -varOUTPUT_DIR=<output_dir> -exit
Where:
| output_dir | The full path to the output directory |
|---|