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LS-DYNA to ISO-MME

Tools → Workflows → LS-DYNA to ISO-MME

The LS-DYNA to ISO-MME workflow tool is one of the Virtual Testing tools. It helps you automatically export Ansys LS-DYNA results data to ISO-MME format as specified by the Euro NCAP Virtual Far Side Simulation & Assessment Protocol v1.0, ready for upload to the VTC Server. It can also be used to export the channels required by the C-NCAP Far Side Occupant Protection Protocol (Appendix H).

Automotive Assessments workflow user data removes the need to manually map Ansys LS-DYNA entities to ISO-MME channel codes.​

The LS-DYNA to ISO-MME Workflow involves the following steps:

  1. Create Automotive Assessments user data in PRIMER the for VTC protocol (e.g. "Euro NCAP Far Side Sled 2024" crash test)

  2. Complete the LS-DYNA to ISO-MME setup in PRIMER

  3. Perform the LS-DYNA to ISO-MME export in T/HIS

  4. Optionally, automate the process in REPORTER

Some new MME headers are added in Euro NCAP 2026 version and some got removed compared to 2024. If the a field is not applicable for version then it will be greyed out and "N/A" will be shown for it. Take a look at list below:

New MME Headers in Euro NCAP 2026

  1. Velocity test object 1
  2. Name of test object 2
  3. Velocity test object 2
  4. Dummy Simulation Model Passenger
  5. Dummy Qualification Ref Passenger
  6. Contact Type dummy -airbag
  7. Mass of dummy 2 in kg

Removed MME Headers in Euro NCAP 2026 (Compared to Euro NCAP 2024)

  1. Virtual Testing Ref ID
  2. Regulation
  3. Velocity test object 1 lon.
  4. Velocity test object 1 lat.
  5. Mass of sled in kg
  6. Mass of centre console in kg
  7. Distance between head CoG and green line (in metres)
  8. Distance between head CoG and yellow line (in metres)
  9. Distance between head CoG and orange line (in metres)
  10. Distance between head CoG and red line (in metres)

Some MME headers were renamed in Euro NCAP 2026 compared to Euro NCAP 2024. Take a look at list below:

Old MME Header (Euro NCAP 2024)
New MME Header (Euro NCAP 2026)
Dummy Simulation Model SpecificationDummy Simulation Model Driver
Reference to Dummy Model Qualification DocumentationDummy Qualification Ref Driver
Contact Type between dummy and seatContact Type dummy -seat
Contact Type between dummy and seatbeltContact Type dummy -belt
Number of contacts used in the overall simulation setupNumber of contacts
Mass of total setup (used for quality checks)Mass of total setup in kg
Mass of dummy in kgMass of dummy 1 in kg

    Setup in PRIMER

    When this tool is initially launched, the GUI will look something like this by default: 

    All the inputs are divided in different categories e.g. User data, Contact data, Vehicle data. Some inputs are already given for reference purposes. e.g. Test name, Laboratory name, Customer name. You can see what input can be given for each textbox by hovering over it.

    1. Virtual testing ref ID

    Select the Virtual Testing Reference ID from the dropdown. If 'Other' is selected, the textbox below will become active to write your own Reference ID.

    2. Subtype of test

    Subtype of test is automatically updated corresponding to Virtual Testing ref ID. In 2026 version this input is not related to Virtual Testing ref ID. You have to define it yourself.

    3. Test date

    If you select "Today", the ISO-MME export will use the current date each time. If you want to enter the test date manually you can select the other radio button which will enable manual text entry.

    4. ISO-MME format

    You can choose between ISO-MME version 1.6 and 2.0. The Euro NCAP Virtual Far Side Simulation & Assessment Protocol v1.0 specifies version 1.6.

    5. Required output channels CSV

    This is the list of required channels to export according to the VTC protocol. It will be loaded automatically for list of supported protocol shown below. You can modify it or provide your own CSV list, but make sure to have it in same format. On each line of the CSV file, the first 16 characters need to be the ISO-MME channel code you wish to output. Supported protocols are as follows:

    Automotive Assessments Crash Test
    		Automotive Assessments Regulation
    		Automotive Assessments Version
    		Description
    Far Side Sled
    		EuroNCAP
    		2024
    		List of channels as per Appendix I in Euro NCAP Virtual Far Side Simulation & Assessment Protocol v1.0
    Front Sled
    		EuroNCAP
    		2026 Robustness 1

    Front Sled
    		EuroNCAP
    		2026 Robustness 2

    Front Sled
    		EuroNCAP
    		2026 Robustness 3

    Front Sled
    		EuroNCAP
    		2026 Validation 1

    Front Sled
    		EuroNCAP
    		2026 Validation 2

    Far Side Sled
    		CNCAP
    		2024 (WSID)
    		List of channels for WSID dummy as per Appendix H.1.2.1.3 and Table H.7 in C-NCAP Far Side Occupant Protection Protocol (Appendix H)
    Far Side Sled
    		CNCAP
    		2024 (SID2-SBLD)
    		List of channels for SID-II dummy as per Appendix H.1.2.1.3 and Table H.7 in C-NCAP Far Side Occupant Protection Protocol (Appendix H)
    Side Pole
    		CNCAP
    		2024 (WSID+WSID)
    		List of channels for WSID driver dummy and WSID passenger dummy combination as per Appendix H.1.2.2.2 first paragraph in C-NCAP Far Side Occupant Protection Protocol (Appendix H)
    Side Pole
    		CNCAP
    		2024 (WSID+ES-2re)
    		List of channels for WSID driver dummy and ES-2re passenger dummy combination as per Appendix H.1.2.2.2 first paragraph in C-NCAP Far Side Occupant Protection Protocol (Appendix H)

    6. Get contact information

    You can retrieve the contact information required by the Euro NCAP Far Side VTC protocol automatically from the Automotive Assessments user data. Make sure you have added valid contact IDs in the Automotive Assessments user data to get it working. You can still input or modify information manually by editing the textbox values.

    7. Calculate distance

    PRIMER calculates the distance between the head centre of gravity (CoG) and green, yellow and orange lines using head node information from Automotive Assessments user data. We assume the vehicle is symmetric and centred on y = 0 and hence that the orange seat centreline y-coordinate is symmetrically opposite the occupant's head CoG y-coordinate.

    8. Required inputs

    Only “Test name” and “Required output channels CSV” are required for exporting channels.​ However, note that technically, all ungreyed out inputs are required to conform to the Euro NCAP Far Side VTC protocol.

    9. Saving

    Save the Workflow data to a .json file or save it to your model and then write out the keyword file from PRIMER.

    10. Automotive Assessments User data

    It is just to show you the configuration of automotive assessments user data. It is not editable.

    11. Check mass

    For all the below mass of parts you can check mass in PRIMER that adds total structural mass. However, it is sometimes not accurate due to encryption.
    1. Mass of driver dummy in kg: Calculates total mass of parts defined for driver dummy in Automotive assessments
    2. Mass of passenger dummy in kg (in case of Front Sled): Calculates total mass of parts defined for front passenger dummy in Automotive assessments
    3. Mass of driver seat in kg: Calculates total mass of parts defined for driver seat in Automotive assessments
    4. Mass of sled in kg: Calculates total mass of parts defined for sled in Automotive assessments
    5. Mass of centre console in kg: Calculates total mass of parts defined for centre console in Automotive assessments

    LS-DYNA to ISO-MME export in T/HIS

    When this tool is initially launched, the GUI will look something like this by default (provided you have filled all information in PRIMER workflow panel):


    1. Modify descriptors

    Before performing the export in T/HIS, you can modify any of the descriptors you defined in PRIMER.​ 

    2. Calculate

    Calculate can be used to automatically populate “Solver Information” and “Simulation Information” from the OTF/d3hsp file and Automotive Assessment user data.​

    T/HIS will automatically populate the following fields:

    1. Solver Version: Gets LS-DYNA solver version from OTF/d3hsp file
    2. Solver Precision: Gets LS-DYNA solver precision from OTF/d3hsp file
    3. Number of CPUs: Gets number of CPUs from OTF/d3hsp file
    4. Time step setting: Gets the minimum time step from OTF/d3hsp file
    5. Number of contacts used in the overall simulation setup: Gets number of contacts using from T/HIS JS-API Model class function GetNumberOf
    6. Number of elements: Gets total number of elements specified in "CONTROL CARD 1. Model Size-General" below "c o n t r o l   i n f o r m a t i o n" from OTF/d3hsp file
    7. Mass of total setup (used for quality checks): Gets total mass reported with "t o t a l  m a s s" from OTF/d3hsp file
    8. Mass of driver dummy in kg: Calculates total mass of parts defined for driver dummy in Automotive assessments from OTF/d3hsp file
    9. Mass of passenger dummy in kg (in case of Front Sled): Calculates total mass of parts defined for front passenger dummy in Automotive assessments from OTF/d3hsp file
    10. Mass of seat in kg: Calculates total mass of parts defined for driver seat in Automotive assessments from OTF/d3hsp file
    11. Mass of sled in kg (only for version 2024): Calculates total mass of parts defined for sled in Automotive assessments from OTF/d3hsp file
    12. Mass of centre console in kg (only for version 2024): Calculates total mass of parts defined for centre console in Automotive assessments from OTF/d3hsp file

    3. Output directory

    Select the output directory where you want to export channels in ISO-MME format.

    4. Export

    Once the output directory is selected, the Export button will be enabled. To perform the export, the LS-DYNA to ISO-MME workflow tool generates a configuration file from all the data and runs a separate T/HIS session in batch mode to export ISO-MME channels in the selected output directory.

    4.1. Time of first sample ISO-MME Header
    If "Time of first sample” was defined (non-zero) in Automotive Assessments PRIMER, then the “Time of first sample” header value will automatically be set in the exported channel files. Note that samples which are shifted to time < 0 will not be discarded as this only happens when the ISO-MME data is processed.



    Automation in REPORTER

    1. Within the Automotive tab in REPORTER, you will be able to select the LS-DYNA to ISO-MME Template. Filter by 'Virtual Testing' to easily find it.

    2. Once open you will be prompted to select the Ansys LS-DYNA keyword file of the job you wish to post-process.


    3. After you have selected your keyword file, you will then be asked if you want to continue with the default options of REPORTER searching for results in the same directory of the keyword file and writing images and outputs into a subdirectory called "lsdyna_to_isomme". If No is selected then PRIMER will be launched and a GUI will be displayed to configure the options. If Yes is selected the default options will be used.

    4. T/HIS will then launch automatically to produce the output files for the report.

    5. If any of the required inputs are missing or invalid, T/HIS will prompt a message window (see example below) asking if you would like to create/edit user data. If you select Yes, PRIMER will be launched and panels will open for you to enter the required information. If you select No then T/HIS will try to generate the report with the data available.

    6. Once it has completed, T/HIS will close and return back to REPORTER.

    7. On the first two pages, summary information is shown in table format much like the GUI output when running the Workflow manually in T/HIS:

    8. On the remaining pages you can see each channel image requested in "Required output channels CSV". If the input entities were missing or invalid for a given channel, an empty graph image with a missing or invalid graph title message will be shown in the report:





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