Multi Body System

Multibody system simulations are a method used to analyze the motion and interaction of multiple connected bodies—such as passengers, seats, and restraints—under dynamic crash conditions. These simulations model how forces and accelerations are transferred through the human body and surrounding structures during an impact event.

In the context of eVTOL safety development, MBS is particularly valuable for evaluating occupant kinematics, injury potential, and safety system performance. Tools like MADYMO allow developers to simulate how passengers behave in various crash scenarios, including vertical impacts or combined vertical and horizontal collisions.

By virtually integrating anthropomorphic test devices (crash test dummies), seatbelt systems, and cabin geometries, MBS enables detailed assessment of spinal loads, head movement, and other injury-relevant parameters. The results help optimize seat design, restraint placement, and crash energy management strategies—long before physical prototypes are built.