An intelligent environment for the occupant simulation and deformable dummy design

Occupant simulation is engineering analysis methods that use rigid body dynamics and finite element methods to create mathematical models that describe the interaction of an occupant with the vehicle or aircraft interior during a crash simulation.; The main goal for the research work is to create an intelligent environment for occupant simulation, and develop a new methodology to accommodate deformable segments of dummies more easily in crash simulation studies.; The intelligent environment will include a database and a user interface. The database consists of several newly created restraint system models with several rigid dummies, and deformable dummy segments. The user interface could help researchers by providing an intelligent environment for occupant simulation, select combination of models from the database, and create new models to add them into this database. The deformable dummy segment could enable the researcher to study the stress and deformation of some important dummy segments during the simulation, and do not need to create an entire FEM dummy.; The software packages ATB (Articulated Total Body) and LS-DYNA were coupled and integrated to provide researchers the capabilities of performing advanced crash simulations in which one can include the dummy model from ATB and the restraint system models from LS-DYNA. The new methodology of deformable which call “deformable and rigid segment combination dummy”, the user only need to create the necessary dummy segments to be deformable and keep other dummy segments to be rigid, in order to save the CPU running time and get the stress and deformation data form deformable segment. The deformable dummy segments, such as head, upper torso and upper legs, were created in this research.