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Numerical Modelling of Intimate Contact for Thermoplastic Composite Joints

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Abstract:

High-performance thermoplastic polymers paved the way for new fast manufacturing pro-cesses, including welding. In order to obtain optimal bonding of the substrates, an adhesion step isrequired, governed by two main phenomena : intimate contact and healing. While healing has beenvastly explored, theorized and starts to be understood, prediction and characterization of the degree ofintimate contact is still a challenge. After a review of squeeze flow models for intimate contact, alongwith the expressions of the analytical solutions for a Newtonian and a shear-thinning fluid modeled bypower law, a finite element model is presented in order to observe the influence of asperity geometry,fluid behavior, and other assumptions on the evolution of the degree of intimate contact.

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Periodical:

Materials Science Forum (Volume 1182)

Pages:

91-102

DOI:

https://doi.org/10.4028/p-Nfg58d

Citation:

Cite this paper

Online since:

April 2026

Authors:

Pierre Waroquier*, Arthur Levy, Steven Le Corre, Jean Luc Bailleul, Joël Serra, Erwan Bertevas

Keywords:

Adhesion, Composite, Intimate Contact, Squeeze Flow, Thermoplastic, Welding

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Creative Commons CC BY 4.0

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* - Corresponding Author

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