With the increasing emphasis on safety aspects in the field of transportation (air, land and sea), the interior design of transportation vehicles (personal and public) must be based on occupant safety/crashworthiness criteria. Due to the higher survivability requirements, the severity of design crash pulses and impact conditions are increased which is leading to higher inertia loading applied to occupant. On the other hand, for higher efficiency and more economical product, smaller vehicles/aircraft's and lighter interior (less structural material) are required which will affect the energy absorption capacity of the structure negatively. Both acceptable occupant survivability and more economical product can be achieved by using efficient restraint system which can control the occupant motion. In addition to the standard restraint systems such as seat belts and airbags, different types of innovative occupant restraint system are being developed to meet the increasing economical and occupant safety design needs. Also, the interior components can be utilized to play an important role as a part of integrated occupant restraint system. Seats, bulk-heads in aircraft's and knee bolsters in cars are some of the interior component which play detrimental role in the occupant safety design. As the occupant safety design process becomes more complex due to the higher number of elements involved (restraint system, interior components, etc.), finding an optimized and safe design through testing alone is no longer a productive approach. Numerical simulation with limited testing for validation has become the leading approach to reach a safe and optimized design. This paper gives an overview of the possibilities to use numerical simulations to optimize the different restraint systems and interior components that play a role in crash safety. Crash analysis software, like MADYMO, allows the designer to study the effect of component property variations and supports decisions about the application of certain safety features.
Occupant safety simulations for interior design
1997
15 Seiten
Conference paper
English
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