Crash simulation of the fuselage section with central wing box for a regional jet

Abstract

2013) Crash simulation of the fuselage section with central wing box for a regional jetA 3-D model of a regional jet fuselage section with central wing box (CWB) was developed for vertical drop crash simulation. The two wings were modelled with a dynamically equivalent system comprising beam and lumped-mass element. Four crashes with differ falling velocity were simulated in the explicit transient-dynamics finite-element code MSC.Dytran, respectively. The acceleration at seat rail is greatly higher than that of the typical fuselage section of the same plane. At high falling velocity, the crash process consists of two impact events due to the involvement in the section bottom and CWB, respectively. The frame and keel beam underneath the CWB are completely crushed. The spanwise beams of CWB are buckled but not collapsed. The longitudinal rib was not appropriately distorted and thus prevented the spanwise beams' buckling. Energy analysis shows that the deformation energy is mainly attributed to the plastic deformation in high dropping velocity. Finally, some proposals on the improvement of crashworthiness are remarked.

Development of a finite element model for comparing metal and composite fuselage section drop testing

“…Comparative models with metallic components have been discussed in recent publications [11,[15][16][17]21,24]; however, relative to the automotive industry little work on the finite element impact analyses of aircraft is available to the public. The publications mentioned earlier generally use a commercial finite element package, either Abaqus or LS-Dyna, with a damage model for homogeneous metallic materials.…”

Crash simulation of fuselage section in the rebound process and the secondary-impact process

“…Originated from simplified models based on lumped masses, beams and nonlinear springs models (Kindervater et al, 1999), explicit finite element simulations have evolved into a rather detailed approach (Adams and Lankarani, 2003). Explicit finite element codes such as Pam-Crash, MSC-Dytran, LS-dyna, ABAQUS-explicit and RADIOSS have been used for fuselage crash simulations in the past two decades (Tay et al, 2015;Yu et al, 2013;Tay et al, 2019;Zhu et al, 2017;Ren et al, 2016). There are also studies covering the whole aircraft crash simulations of fixed-wing aircrafts (Lu et al, 2015;Schwinn, 2015).…”