Delamination is one of the most commonly observed failure modes in laminated composites. The existence of delamination in a structure can significantly reduce the stiffness and strength of the structure. The simulations of delamination are performed by two different methods: Virtual Crack closure Technique (VCCT) and Cohesive Zone Method (CZM).VCCT is a fracture mechanics approach which is widely used to compute energy release rates. CZM is a progressive event governed by progressive stiffness reduction of the interface between two separating faces which uses bilinear material behavior for interface delamination and fracture energies based debonding to analyze delamination of unidirectional Double Cantilever Beam (DCB) specimen. The proposed methods are validated with the benchmark results. The load-displacement response predicted by CZM agreed well with the benchmark results. The other approach, VCCT, also successfully simulated the load-displacement response curve but this method overestimated the critical load. Parametric study is carried out for a range of height of the beam and load-displacement response is studied.

"/> Critical load, CZM, Delamination, Energy release rates, VCCT

"/> Delamination is one of the most commonly observed failure modes in laminated composites. The existence of delamination in a structure can significantly reduce the stiffness and strength of the structure. The simulations of delamination are performed by two different methods: Virtual Crack closure Technique (VCCT) and Cohesive Zone Method (CZM).VCCT is a fracture mechanics approach which is widely used to compute energy release rates. CZM is a progressive event governed by progressive stiffness reduction of the interface between two separating faces which uses bilinear material behavior for interface delamination and fracture energies based debonding to analyze delamination of unidirectional Double Cantilever Beam (DCB) specimen. The proposed methods are validated with the benchmark results. The load-displacement response predicted by CZM agreed well with the benchmark results. The other approach, VCCT, also successfully simulated the load-displacement response curve but this method overestimated the critical load. Parametric study is carried out for a range of height of the beam and load-displacement response is studied.

"/> Delamination is one of the most commonly observed failure modes in laminated composites. The existence of delamination in a structure can significantly reduce the stiffness and strength of the structure. The simulations of delamination are performed by two different methods: Virtual Crack closure Technique (VCCT) and Cohesive Zone Method (CZM).VCCT is a fracture mechanics approach which is widely used to compute energy release rates. CZM is a progressive event governed by progressive stiffness reduction of the interface between two separating faces which uses bilinear material behavior for interface delamination and fracture energies based debonding to analyze delamination of unidirectional Double Cantilever Beam (DCB) specimen. The proposed methods are validated with the benchmark results. The load-displacement response predicted by CZM agreed well with the benchmark results. The other approach, VCCT, also successfully simulated the load-displacement response curve but this method overestimated the critical load. Parametric study is carried out for a range of height of the beam and load-displacement response is studied.

"/> Delamination is one of the most commonly observed failure modes in laminated composites. The existence of delamination in a structure can significantly reduce the stiffness and strength of the structure. The simulations of delamination are performed by two different methods: Virtual Crack closure Technique (VCCT) and Cohesive Zone Method (CZM).VCCT is a fracture mechanics approach which is widely used to compute energy release rates. CZM is a progressive event governed by progressive stiffness reduction of the interface between two separating faces which uses bilinear material behavior for interface delamination and fracture energies based debonding to analyze delamination of unidirectional Double Cantilever Beam (DCB) specimen. The proposed methods are validated with the benchmark results. The load-displacement response predicted by CZM agreed well with the benchmark results. The other approach, VCCT, also successfully simulated the load-displacement response curve but this method overestimated the critical load. Parametric study is carried out for a range of height of the beam and load-displacement response is studied.

"/>

Call for Paper - Upcoming Issues

Finite Element Modeling for Delamination Analysis of Double Cantilever Beam Specimen

International Journal of Mechanical Engineering
© 2014 by SSRG - IJME Journal
Volume 1 Issue 5
Year of Publication : 2014
Authors : Mohammed Waseem H.S., Kiran Kumar N
10.14445/23488360/IJME-V1I5P105
pdf
How to Cite?

Mohammed Waseem H.S., Kiran Kumar N, "Finite Element Modeling for Delamination Analysis of Double Cantilever Beam Specimen," SSRG International Journal of Mechanical Engineering, vol. 1,  no. 5, pp. 6-11, 2014. Crossref, https://doi.org/10.14445/23488360/IJME-V1I5P105

Abstract:

Delamination is one of the most commonly observed failure modes in laminated composites. The existence of delamination in a structure can significantly reduce the stiffness and strength of the structure. The simulations of delamination are performed by two different methods: Virtual Crack closure Technique (VCCT) and Cohesive Zone Method (CZM).VCCT is a fracture mechanics approach which is widely used to compute energy release rates. CZM is a progressive event governed by progressive stiffness reduction of the interface between two separating faces which uses bilinear material behavior for interface delamination and fracture energies based debonding to analyze delamination of unidirectional Double Cantilever Beam (DCB) specimen. The proposed methods are validated with the benchmark results. The load-displacement response predicted by CZM agreed well with the benchmark results. The other approach, VCCT, also successfully simulated the load-displacement response curve but this method overestimated the critical load. Parametric study is carried out for a range of height of the beam and load-displacement response is studied.

Keywords:

Critical load, CZM, Delamination, Energy release rates, VCCT

References:

[1]    De Xie, Sherrill B. Bigger Jr., Progressive crack growth analysis usinginterface element based on the virtual crack closure technique, Finite elements in analysis and design, Vol. 42, 2006, pp.  977-984.
[2]    Ronald Krueger, Dirk Goetze, Influence of Finite Element Software on Energy Release Rates Computed Using the Virtual Crack Closure Technique, NIA Report, NASA/CR-2006-214523, October-2006.
[3]    Mi Y, Crisfield MA, Davies GAO, Hellweg HB, Progressive Delamination Using Interface Elements. Journal of Composite Materials 1998; 32:1246.
[4]    Chen J, Crisfield M, Kinloch AJ, Busso EP, Matthews, Qui Y., Predicting Progressive Delamination of Composite Material Specimens via Interface Elements, Mechanics of Composite Materials and Structures, Vol. 6, 1999, pp. 301 317.
[5]    M.L. Benzeggagh and M. Kenane, Measurement of Mixed-Mode Delamination Fracture Toughness of Unidirectional Glass/Epoxy Composites with Mixed-Mode Bending Apparatus, Composites Science and Technology, vol. 56, pp. 439-449, 1996.
[6]    Alfano G, Crisfield MA,.Finite Element Interface Models for the Delamination Analysis of Laminated Composites: Mechanical and Computational Issues. International Journal for Numerical Methods in Engineering, Vol 50, 2001, pp. 1701-1736
[7]    ANSYS Inc. ANSYS mechanical APDL materials reference, Release15.
[8]    G.A.O. Davies, Benchmarks For Composite Delamination Publication  R00084: NAFEMS, 2002