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ORIGINAL RESEARCH article
Front. Mech. Eng.
Sec. Solid and Structural Mechanics
Volume 11 - 2025 | doi: 10.3389/fmech.2025.1514002
This article is part of the Research Topic Failure, Fracture, and Fatigue of Soft Materials View all articles
Modelling Fatigue Induced Change in Hyperelastic Response of SBR/NR Blends
Provisionally accepted- Indian Institute of Technology Kharagpur, Kharagpur, India
Traditionally, fatigue of hyperelastic materials has been modelled using Continuum Damage Mechanics. Although CDM can very accurately simulate damage due to fatigue, CDM can simulate only a small control volume of the material efficiently. If the model is not extremely precise, simulating the bulk structure becomes computationally costly and more error-prone.A systematic approach is utilised to examine the fatigue-induced property change in rubber composites. Hyperelasticity, and failure characteristics, such as tensile strength and elongation at break, are used to create the model. In this paper, the Energy Limiter approach is used to develop a constitutive model that can capture the variation of material parameters with fatigue.To model the variation of material parameters with the number of loading cycles, uniaxial tensile tests are conducted after subjecting the samples to different number of fatigue loading cycles. The experimental data obtained from the tensile test is used in an optimisation algorithm to find the model parameters that provide the best fit to the experimental behaviour.With the predicted parameters, the tensile test is simulated in ABAQUS incorporating element deletion and the results of the ABAQUS simulation are compared with experimental behaviour and model response. Finally, a relation for model parameters as a function of life factor is obtained.
Keywords: Hyperelasicity, Fatigue, Abaqus, Yeoh model, Rubber, MATLAB
Received: 19 Oct 2024; Accepted: 17 Mar 2025.
Copyright: © 2025 Nambiar and Pullela. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Adtihya Nambiar, Indian Institute of Technology Kharagpur, Kharagpur, India
Mythravaruni Pullela, Indian Institute of Technology Kharagpur, Kharagpur, India
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