Multibody dynamics of aircraft occupants seated behind interior walls
✍ Scribed by Hamid M. Lankarani; Deren Ma; Rajiv Menon
- Book ID
- 104621332
- Publisher
- Springer Netherlands
- Year
- 1994
- Tongue
- English
- Weight
- 654 KB
- Volume
- 6
- Category
- Article
- ISSN
- 0924-090X
No coin nor oath required. For personal study only.
✦ Synopsis
To improve aircraft crash safety, conditions critical to occupants survival during a crash must be known. In view of the importance of this problem, studies of post-crash dynamic behavior of victims are necessary in order to reduce severe injuries. In this study, crash dynamics program SOM-LA/TA, incorporating a dynamic model of the human body with a finite element model of the seat structure was used. Modifications were performed in the program for reconstruction of an occupant's head impact with the interior walls or bulkhead. A viscoelastic-type contact force model was used to represent the compliance characteristics of the bulkhead. Correlated studies of analytical simulations with impact sled test results were accomplished. A parametric study of the coefficients in the contact force model was then performed in order to obtain the correlations between the coefficients and the Head Injury Criteria. A measure of optimal values for the bulkhead compiiance and displacement requirements was thus achieved in order to keep the possibility of a head injury as little as possible. This information could in turn be used in the selection of suitable materials for the bulkhead, instrument panel, or interior walls of an aircraft.