Edge impact modeling on stiffened composite structures

Abstract Finite Element Analysis of low velocity/low energy edge impact has been carried out on carbon fiber reinforced plastic structure. Edge impact experimental results were then compared to the numerical “Discrete Ply Model” in order to simulate the edge impact damage. This edge impact model is inspired to out-of-plan impact model on a laminate plate with addition of new friction and crushing behaviors. From a qualitative and quantitative point of view, this edge impact model reveals a relatively good experiment/model agreement concerning force–time and force–displacement curves, damage morphology or permanent indentation after impact. In particular the correlation is faithful concerning the results of the parameters retained by industry; the maximum crack length on the edge and the permanent indentation. Finally, it can be noticed that the model quickly answers in crushing mode and goes in an inadequate way from the dynamic behavior to the quasi-static behavior. In order to correct this problem it seems necessary to implement a strain rate effect in the behavior law on the fiber failure in compression. The next step is to apply this model to the compression after impact.

[1]  Christophe Bouvet,et al.  Edge impact damage scenario on stiffened composite structure , 2015 .

[2]  Samuel Rivallant,et al.  Experimental investigation on mean crushing stress characterization of carbon–epoxy plies under compressive crushing mode , 2013 .

[3]  Christophe Bouvet,et al.  Experimental analysis of damage creation and permanent indentation on highly oriented plates , 2009 .

[4]  Lorenzo Iannucci,et al.  Fracture toughness of the tensile and compressive fibre failure modes in laminated composites , 2006 .

[5]  Christophe Bouvet,et al.  Validation of low velocity impact modelling on different stacking sequences of CFRP laminates and influence of fibre failure , 2013 .

[6]  Hiroshi Suemasu,et al.  Damage propagation in CFRP laminates subjected to low velocity impact and static indentation , 2007 .

[7]  Martyn J Pavier,et al.  Edge impact to composite laminates: experiments and simulations , 2008 .

[8]  Christophe Bouvet,et al.  Impact and compression after impact experimental study of a composite laminate with a cork thermal shield , 2007 .

[9]  Richard Butler,et al.  Compressive strength of composite laminates following free edge impact , 2010 .

[10]  Benoit Furet,et al.  Characterisation of friction properties between a laminated carbon fibres reinforced polymer and a monocrystalline diamond under dry or lubricated conditions , 2010 .

[11]  Lorenzo Iannucci,et al.  A progressive failure model for mesh-size-independent FE analysis of composite laminates subject to low-velocity impact damage , 2012 .

[12]  S. Abrate.  Composite structures: impact on composites 2002 , 2003 .

[13]  Fu-Kuo Chang,et al.  Damage in graphite/epoxy laminated composites resulting from low-velocity impact , 1991 .

[14]  Z. Hashin.  Failure Criteria for Unidirectional Fiber Composites , 1980 .

[15]  Christophe Bouvet,et al.  Low velocity impact modeling in composite laminates capturing permanent indentation , 2012 .

[16]  Qingda Yang,et al.  Cohesive models for damage evolution in laminated composites , 2005 .

[17]  As Kaddour,et al.  Maturity of 3D failure criteria for fibre-reinforced composites: Comparison between theories and experiments: Part B of WWFE-II , 2013 .

[18]  Paul J. Hogg,et al.  The crush behaviour of carbon fibre angle-ply reinforcement and the effect of interlaminar shear strength on energy absorption capability , 2000 .

[19]  D. Hull,et al.  A unified approach to progressive crushing of fibre-reinforced composite tubes , 1991 .

[20]  M. A. Crisfield,et al.  Progressive Delamination Using Interface Elements , 1998 .

[21]  Z. Bažant,et al.  Crack band theory for fracture of concrete , 1983 .