Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2021 Jan 11;14(2):328.
doi: 10.3390/ma14020328.

Apparent Young's Modulus of the Adhesive in Numerical Modeling of Adhesive Joints

Kamil Anasiewicz  1 , Józef Kuczmaszewski  1
Affiliations

Apparent Young's Modulus of the Adhesive in Numerical Modeling of Adhesive Joints

Kamil Anasiewicz et al. Materials (Basel). .

Abstract

This article is an evaluation of the phenomena occurring in adhesive joints during curing and their consequences. Considering changes in the values of Young's modulus distributed along the joint thickness, and potential changes in adhesive strength in the cured state, the use of a numerical model may make it possible to improve finite element simulation effects and bring their results closer to experimental data. The results of a tensile test of a double overlap adhesive joint sample, performed using an extensometer, are presented. This test allowed for the precise determination of the shear modulus G of the cured adhesive under experimental conditions. Then, on the basis of the research carried out so far, a numerical model was built, taking the differences observed in the properties of the joint material into account. The stress distribution in a three-zone adhesive joint was analyzed in comparison to the standard numerical model in which the adhesive in the joint was treated as isotropic. It is proposed that a joint model with three-zones, differing in the Young's modulus values, is more accurate for mapping the experimental results.

Keywords: adhesive joint modelling; adhesive joint zones; apparent Young’s modulus; changes in adhesive properties.

PubMed Disclaimer

Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Schematic representation of adhesive joint with indicated zones.
Figure 2
Figure 2
The drawing of a 25.4 mm wide double-lap sample with the main dimensions (a). An example of a sample compliant with ASTM 3528 in the test rig of a Zwick Roell Z150 testing machine (b).
Figure 3
Figure 3
A detailed view of the numerical model with the presented division of the joint into three zones, with visible mesh density in the boundary zone.
Figure 4
Figure 4
Stress bitmap shown on the 1/4 part of the FEM model. Representation of displacements with a deformation factor ×150.
Figure 5
Figure 5
Experimental results of tension test of double overlap sample according to ASTM D3528.
Figure 6
Figure 6
Comparison of the experimentally obtained stress-strain curve and the results obtained from the FEM simulation.
Figure 7
Figure 7
Comparison of reduced stress along a single 12.7-mm long lap.
See this image and copyright information in PMC

References

    1. Kuczmaszewski J. Fundamentals of Metal-Metal Adhesive Joint Design. Lublin University of Technology Polish Academy of Sciences; Lublin, Poland: 2006.
    1. Campilho R.D.S.G., Baneac M.D., Netoc J.A.B.P., Da Silvac L.F.M. Modelling adhesive joints with cohesive zone models: Effect of the cohesive law shape of the adhesive layer. Int. J. Adhes. Adhes. 2013;44:48–56. doi: 10.1016/j.ijadhadh.2013.02.006. - DOI
    1. Kim Y.J., Hossain M., Yoshitake I. Cold region durability of a two-part epoxy adhesive in double-lap shear joints: Experiment and model development. Constr. Build. Mater. 2012;36:295–304. doi: 10.1016/j.conbuildmat.2012.04.026. - DOI
    1. Kinloch A.J. Adhesion and Adhesives Science and Technology. Springer; Berlin, Germany: 1987.
    1. Pocius A.V. Adhesion and Adhesives Technology. Hanser Publications; Cincinnati, OH, USA: 2012.

LinkOut - more resources