Comparison of cohesive zone elements and smoothed particle hydrodynamics for failure prediction of single lap adhesive joints

ABSTRACT This research investigates the use of a meshless smoothed particle hydrodynamics (SPH) method for the prediction of failure in an adhesively bonded single lap joint. A number of issues concerning the SPH based finite element modelling of single lap joints are discussed. The predicted stresses of the SPH finite element model are compared with the results of a cohesive zone based finite element model. Crack initiation and crack propagation in the adhesive layer are also studied. The results show that the peel stresses predicted by the SPH finite element model are higher and the shear stresses are lower than those predicted by the cohesive zone finite element model. The crack initiation and propagation response of the two models is similar, however, the SPH finite element model predicted a lower failure load than the cohesive zone finite element model. It is concluded that the current implementation of SPH method is a promising method for modelling cohesive failure in bonded joins but requires further development to allow for interfacial crack growth and better stress prediction under tensile loading to compete with existing methods.

[1]  J. Monaghan.  SPH without a Tensile Instability , 2000 .

[2]  A. Mubashar.  Modelling degradation in adhesive joints subjected to fluctuating service conditions , 2010 .

[3]  Mark A Fleming,et al.  Meshless methods: An overview and recent developments , 1996 .

[4]  I. Ashcroft,et al.  Modelling Cyclic Moisture Uptake in an Epoxy Adhesive , 2009 .

[5]  K. Volokh.  Comparison between cohesive zone models , 2004 .

[6]  Raul D.S.G. Campilho,et al.  Advances in Numerical Modelling of Adhesive Joints , 2012 .

[7]  I. Ashcroft,et al.  A comparison of failure prediction methods for an adhesively bonded composite beam , 2004 .

[8]  Magd Abdel Wahab,et al.  Modelling the environmental degradation of adhesively bonded aluminium and composite joints using a CZM approach , 2007 .

[9]  L. Lucy.  A numerical approach to the testing of the fission hypothesis. , 1977 .

[10]  Ping Hu,et al.  Strength prediction of adhesively bonded joints under cyclic thermal loading using a cohesive zone model , 2013 .

[11]  Leonardo Di G. Sigalotti,et al.  Adaptive kernel estimation and SPH tensile instability , 2008, Comput. Math. Appl..

[12]  Myer Kutz.  Handbook of Materials Selection , 2002 .

[13]  K. Liew,et al.  A mesh-free simulation of cracking and failure using the cohesive segments method , 2007 .

[14]  Magd Abdel Wahab,et al.  Predicting the residual strength for environmentally degraded adhesive lap joints , 2006 .

[15]  A. Crocombe,et al.  Modelling the static response of unaged adhesively bonded structures , 2013 .

[16]  Giovanni Castellazzi,et al.  On the performances of parametric finite elements when geometry distortions occur , 2011 .

[17]  I. Ashcroft,et al.  Modelling Environmental Degradation in EA9321-Bonded Joints using a Progressive Damage Failure Model , 2006 .

[18]  Ian A. Ashcroft,et al.  Moisture absorption–desorption effects in adhesive joints , 2009 .

[19]  I. Ashcroft,et al.  Strength prediction of adhesive joints after cyclic moisture conditioning using a cohesive zone model , 2011 .

[20]  Implementation, identification and validation of an elasto-plastic-damage model for the finite element simulation of structural bonded joints , 2014 .

[21]  Eyup Bagci,et al.  3-D numerical analysis of orthogonal cutting process via mesh-free method , 2011 .

[22]  Morten F. Villumsen,et al.  Simulation of Metal Cutting using Smooth Particle Hydrodynamics , 2008 .

[23]  R. P. Ingel,et al.  Addressing Tension Instability in SPH Methods. , 1994 .

[24]  M. D. Moura,et al.  Determination of cohesive laws in wood bonded joints under mode II loading using the ENF test , 2014 .

[25]  Yu Huang,et al.  Numerical simulation of large deformation in shear panel dampers using smoothed particle hydrodynamics , 2013 .

[26]  Robert D. Adams,et al.  Experimental and numerical analysis of single-lap joints for the automotive industry , 2009 .

[27]  M. D. Moura,et al.  Modelling single and double-lap repairs on composite materials , 2005 .

[28]  Huafeng Liu,et al.  Meshfree Particle Methods , 2004 .

[29]  Ettore Barbieri,et al.  A Meshless Cohesive Segments Method for Crack Initiation and Propagation in Composites , 2011 .

[30]  Chun H. Wang,et al.  Plastic yielding of a film adhesive under multiaxial stresses , 2000 .

[31]  L.F.M. da Silva,et al.  Strength prediction of single- and double-lap joints by standard and extended finite element modelling , 2011 .

[32]  Andreas Öchsner,et al.  Modeling of Adhesively Bonded Joints , 2008 .

[33]  I. Ashcroft,et al.  Modelling Damage and Failure in Adhesive Joints Using A Combined XFEM-Cohesive Element Methodology , 2014 .

[34]  R. Batra,et al.  Analysis of cohesive failure in adhesively bonded joints with the SSPH meshless method , 2014 .

[35]  Ian A. Ashcroft,et al.  Finite element prediction of fatigue crack propagation lifetime in composite bonded joints , 2004 .