Influence of the Cohesive Law Parameters on the Strength Prediction of Adhesively-Bonded Joints

摘要:

文章预览

Adhesive joints are largely employed nowadays as a fast and effective joining process. The respective techniques for strength prediction have also improved over the years. Cohesive Zone Models (CZM’s) coupled to Finite Element Method (FEM) analyses surpass the limitations of stress and fracture criteria and allow modelling damage. CZM’s require the energy release rates in tension (Gn) and shear (Gs) and respective fracture energies in tension (Gnc) and shear (Gsc). Additionally, the cohesive strengths (tn0 for tension and ts0 for shear) must also be defined. In this work, the influence of the CZM parameters of a triangular CZM used to model a thin adhesive layer is studied, to estimate their effect on the predictions. Some conclusions were drawn for the accuracy of the simulation results by variations of each one of these parameters.

信息:

期刊:

编辑:

Ana Maria Pires Pinto and António Sérgio Pouzada

页数:

1000-1005

引用:

R. D.S.G. Campilho et al., "Influence of the Cohesive Law Parameters on the Strength Prediction of Adhesively-Bonded Joints", Materials Science Forum, Vols. 730-732, pp. 1000-1005, 2013

上线时间:

November 2012

输出:

价格:

$38.00

[1] M.J. Lee, T.M. Cho, W.S. Kim, B.C. Lee, J.J. Lee, Determination of cohesive parameters for a mixed-mode cohesive zone model, Int. J. Adhes. Adhes. 30 (2010) 1948–(1958).

[2] T. Andersson, U. Stigh, The stress-elongation relation for an adhesive layer loaded in peel using equilibrium of energetic forces, Int. J. Solids Struct. 41 (2004) 413–434.

DOI: https://doi.org/10.1016/j.ijsolstr.2003.09.039

[3] T. Carlberger, U. Stigh, Influence of layer thickness on cohesive properties of an epoxy-based adhesive – An experimental study, J. Adhesion 86 (2010) 814–833.

DOI: https://doi.org/10.1080/00218464.2010.498718

[4] R.D.S.G. Campilho, M.F.S.F. de Moura, J.J.M.S. Domingues, Modelling single and double-lap repairs on composite materials, Compos. Sci. Technol. 65 (2005) 1948–(1958).

DOI: https://doi.org/10.1016/j.compscitech.2005.04.007

[5] R.D.S.G. Campilho, A.M.G. Pinto, R.F. Silva, M.D. Banea, L.F.M. da Silva, Strength improvement of adhesively-bonded joints using a reverse-bent geometry, J. Adhes. Sci. Technol., in Press.

DOI: https://doi.org/10.1163/016942411x580081

[6] S.K. Panigrahi, B. Pradhan, Three dimensional failure analysis and damage propagation behavior of adhesively bonded single lap joints in laminated FRP composites, J. Reinf. Plast. Compos. 26 (2007) 183–201.

DOI: https://doi.org/10.1177/0731684407070026

[7] M. Ridha, V.B.C. Tan, T.E. Tay, Traction-separation laws for progressive failure of a bonded scarf repair of composite panel, Compos. Struct. 93 (2010) 1239–1245.

DOI: https://doi.org/10.1016/j.compstruct.2010.10.015

[8] K.C. Shin, J.J. Lee, Bond parameters to improve tensile load bearing capacities of co-cured single and double lap joints with steel and carbon-fiber-epoxy composite adherends, J. Compos. Mater. 37 (2003) 401–420.

DOI: https://doi.org/10.1177/0021998303037005040