Wikipedia
MADYMO
MADYMO (MAthematical DYnamic MOdels) is a software package for the analysis of occupant safety systems in the automotive and transport industries. The software was developed by the Netherlands Organization for Applied Scientific Research (TNO) and is owned and distributed by TASS International Software and Services, headquartered in Helmond, the Netherlands. By one author's estimation, "MADYMO is probably the most widely used multi-body system program for occupant safety systems."
Application areas include automotive crash safety, train interior safety, motorcycle safety, aircraft and helicopter safety, consumer product safety, accident re-construction, and vehicle handling.