Iterative ExperirnentaYnumerica1 Procedure To Design Riveted Joints For Airframe Crashworthiness
Author(s)
B. Lungrand, L Patronelli, E. Deletombe
Abstract
Iterative experimental/numerical procedure to
design riveted joints for airframe crash worthiness
B. Langrand, L. Patronelli and E. Deletombe
Department of Solid and Damage Mechanics, ONERA-Lille, France
Abstract
The paper deals with an iterative experimental/numerical methodology to
improve FE riveted joint models used in airframe crashworthiness studies.
Standard and specific experiments are undertaken to measure the behaviour and
the strain rate sensitivity of materials for rivets and structures. Material
parameters are identified for elasto-viscoplastic and damage constitutive models.
Standard and specific tests are carried out and modelled to analyse the material
embrittlement coming from riveting process and the dynamic failure of riveted
joints. A specific procedure is developed for identification of equivalent rivet
model for structural crashworthiness. A new rivet model is developed to
improve the representativeness of airframe FE model.
1 Introduction
The
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