Open AccessDynamic Response of Biodynamic Model Seated on a Crashworthy Seat with Composite Absorber
Author(s) -
Na Li,
Yi Fu
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/746/1/012030
Subject(s) - shock absorber , crashworthiness , composite number , materials science , structural engineering , tube (container) , dynamic vibration absorber , composite material , absorption (acoustics) , shock (circulatory) , finite element method , engineering , acoustics , physics , vibration , medicine
This paper presents an energy absorber consists of an inward folding of composite tube. There is no composite debris overflow after the composites collapsing and the debris will fill in the inner of tube to increase the energy absorption. The absorber maintains integrate during crushing and then could be used in a crashworthy structure. Impact tests were conducted to explore the energy absorption performance. To investigate the application of the absorber to the shock-resistance of the seat in the helicopter, a five-degree-of-freedom nonlinear biodynamic model corresponding to 50th-percentile male occupant was setup. Simulations on the responses of the biodynamic with and without absorber were conducted, and the results present effect of the absorber on shock-resistance.