Development of a Multibody Model of an Aircraft Seat Assembly and Occupant for the Simulation of Dynamic Certification Tests

EasyChair Preprint no. 13392

Abstract

This work presents the development of a Multibody model of an aircraft seat assembly based on the plastic hinge technique approach to improve the seat structural performance and assist in the Certification by Analysis.

The structural components within the seat’s primary load path - the legs, the spreaders, and the cross tubes, were segmented into several bodies. To simulate the elastic and plastic deformations of the seat, the bodies were connected by plastic hinges. The constitutive models of the hinges were obtained from the Finite Element Analysis that were performed on the bodies.

The MB model was validated by comparing the loads at floor fittings and seat-belt attachments, as well as the kinematics and relevant injury criteria to the occupant (ATD) obtained in the MB model, to the ones from experimental procedures for the dynamic certification tests.

Keyphrases: Aircraft Seats, Occupant safety, plastic hinges

@Booklet{EasyChair:13392,
  author = {Ana Martins and Marta Carvalho and Gerardo Olivares and Hamid Lankarani},
  title = {Development of a Multibody Model of an Aircraft Seat Assembly and Occupant for the Simulation of Dynamic Certification Tests},
  howpublished = {EasyChair Preprint no. 13392},

  year = {EasyChair, 2024}}