Systems Performance and Numerical Analysis Committee

Click here to download the minutes from the 2006 meeting of the SPNAC.

Mission Statement:  Provide an industry focal point where non-competitive issues in the field of Restraint System Performance and Numerical Analysis can be collectively reviewed, industry solutions generated and implemented.

Agreed project list currently includes:
1.       Commonize OOP simulation evaluation and coordinate software development
2.       Modeling of new ATD’s (ie.THOR LX) – especially the neck
3.       Standardize Numerical Methods and Validation levels
4.       Human Body Modeling – initial specification development

Recent Accomplishments or Completed Projects:

• Completed the evaluation of OOP simulation capability working with TNO using MADYMO as a tool. Project scope & deliverables identified by committee and project kicked off in July 2004. Committee members assigned and performed several technical tasks such as providing hardware for testing, performing testing, etc at several of the member company facilities. Project manager assigned to track all the milestones & deliverables. Periodic technical gate reviews conducted to provide feedback on the status of the project.

Some of the key deliverables were:
1.      Report of the simulation results of OOP modeling for NHTSA 1 & 2 positions for six yr old in a Passenger OOP environment.
2.      Comparison of all the modeling results with test data.
3.      Capturing the lessons learned in the modeling techniques used in this project.
4.      Validated models for static test, pendulum test and NHTSA position 1 & 2 tests.
5.      Final report completed in February 2005.

Next steps:
•    If future code enhancements are needed to improve the model correlation, TNO will provide AORC with a list of all enhancements and their respective timing for implementation.
•    Potential joint publication of results & discussion between AORC and TNO as a technical paper in appropriate forums.