WIT Press


New Embrittled Shell Element For Airframe Crash Simulation

Price

Free (open access)

Paper DOI

10.2495/OP010071

Volume

54

Pages

12

Published

2001

Size

1,214 kb

Author(s)

L. Patronelli, B. Langrand, E. Deletombe, E. Markiéwicz & P. Drazétic

Abstract

New embrittled shell element for airframe crash simulation 11 1 o L. Patronelli , B. Langrand , E. Deletombe , E. Markiewicz & P. Drazetic^ ^Department of solid and damage mechanics, Structural resistance and design section, ONERA-Lille, France •~i Industrial and human automatic control and mechanical engineering laboratory, university of Valenciennes, France Abstract The paper deals with problem linked to finite element analysis of airframe crash study. Today the limit of Finite Element analysis imposes a minimum shell element size which does not represent local failure due to riveted joints. These local failures are generally critical and it leads the global ruin mode of airframe during crash. It is difficult to find a compromise between computation time (relative to size of model, size of elements, numerical power of tools) and prediction of simulation linked to thin description of geometry which influence genera

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