Work

Predicting multiaxial stiffness degradation using uniaxial data — A model based on non-proportional experiments on a structural adhesive

Year: 2025

Type: article

Abstract: In this work, multiaxial experiments on a structural adhesive with varying levels of non-proportionality are analyzed with a focus on the stiffness degradation process. A load level-dependent stiffness degradation model is employed that captures both, Young’s and shear modulus degradation. It was found that a multiaxial stiffness degradation can be modeled with good approximation as a superposition of the uniaxial stiffness degradations. Furthermore, the results indicate an insignificant influence of the level of non-proportionality on both Young’s and shear modulus degradation for the analyzed short fiber-reinforced adhesive.

Source: International Journal of Fatigue

DOI: 10.1016/j.ijfatigue.2025.109240

Authors: Michael Kuhn, Martin A. Eder, Alexander Krimmer, Claudio Balzani

Institutions: Leibniz University Hannover, Technical University of Denmark

Language: English

Topic: Mechanical Behavior of Composites

Subfield: Mechanics of Materials

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,940

Funders: Bundesministerium für Wirtschaft und Klimaschutz, Energiteknologisk udviklings- og demonstrationsprogram