Abstract
Abstract A numerical model of a commercial fuselage section with dummies and seats under a crash environment was investigated to evaluate the dynamic responses of occupants. Firstly, the two dynamic tests about seats and occupants restraint system were performed to meet the requirements specified by CCAR-25, including the tension loads in straps and the head injury criterion, and gained a method for simulation on seats and occupants restraint system. Secondly, the detail fuselage FE model was built to compare different vertical velocities; the results showed that the greater the velocity is, the more violently the dummies moved, while the deformation of structures had no difference.
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