Affiliation of Author(s):能源与动力学院
Journal:INTERNATIONAL JOURNAL OF CRASHWORTHINESS
Key Words:Woven fabrics numerical simulation constitutive model ballistic impact energy absorption
Abstract:A numerical simulation method was developed to provide effective tools to estimate the ballistic resistance of Kevlar 49 fabric for gas turbine engine containment system in LS-DYNA. Material model based on representative unit cell and three-element viscoelastic constitutive equation was employed to describe the dynamic response of single-layer and multi-layer fabrics. The influences of mesh size, hourglass control method in the material model were discussed. The numerical simulation method is used to predict the ballistic performance of Kevlar fabrics in testing condition. The failure mechanism, the stress wave propagation and energy absorption mechanism were investigated and compared with testing results and achieved good agreements. It is indicated that the developed numerical method provides promising results in modelling the high-speed ballistic impact events and engine fan blade off events.
ISSN No.:1358-8265
Translation or Not:no
Date of Publication:2019-01-02
Co-author:Liu Lulu,Chen Wei,Luo Gang
Correspondence Author:赵振华,Chen Wei,Chen Wei
Date of Publication:2019-01-02