Multi-physics simulation of adhesives for structural joints in hygrothermal environments considering mechanical degradation

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F25%3A00383458" target="_blank" >RIV/68407700:21110/25:00383458 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.compstruct.2025.118928" target="_blank" >https://doi.org/10.1016/j.compstruct.2025.118928</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.compstruct.2025.118928" target="_blank" >10.1016/j.compstruct.2025.118928</a>

Result language

angličtina

Original language name

Multi-physics simulation of adhesives for structural joints in hygrothermal environments considering mechanical degradation

Original language description

Adhesive joints are increasingly utilized to address structural challenges by overcoming non-uniform stress transfer and stress concentration common in mechanical joint systems. For hybrid Fiber Reinforced Polymer (FRP)/concrete systems, interfacial bond strength is governed by adhesive joints, which are highly sensitive to environmental factors like moisture and temperature. Moisture ingress, from the surrounding environment and from concrete, can induce hydrolytic degradation, significantly altering the mechanical properties of the adhesive. To address these issues, a nonlinear Finite Element Method (FEM)-based model has been developed, coupling moisture diffusion with a mechanical degradation model for thermoset polymers. This multi-physics framework is able to capture moisture exchange between adhesive, concrete, and the environment, predicting the performance of bulk adhesive under hygrothermal conditions. Calibration and validation were performed using experimental data from bulk adhesive samples. A parametric study on the diffusion model was performed to discuss the influence of the model parameters on the mechanical behavior of bulk adhesive. Furthermore, predictive proof-of concept simulations were conducted, including its application to two representative single-lap shear tests: steel-steel system and FRP-concrete system. This case study aids in evaluating and understanding the fundamental mechanisms of moisture diffusion and mechanical degradation in structural joints.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Project

<a href="/en/project/GA23-04971S" target="_blank" >GA23-04971S: Prediction of mechanical behaviour of structures 3D printed based on alloy of titanium with betastructure</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Composite Structures

ISSN

0263-8223

e-ISSN

1879-1085

Volume of the periodical

357

Issue of the periodical within the volume

118928

Country of publishing house

GB - UNITED KINGDOM

Number of pages

18

Pages from-to

—

UT code for WoS article

001428363700001

EID of the result in the Scopus database

2-s2.0-85217855836