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Rubber Fibre Composite Modelling and its Influence on Fatigue Damage Assessment
  • Simon Oman,
  • Marko Nagode,
  • Jernej Klemenc
Simon Oman
University of Ljubljana, Faculty of Mechanical Engineering
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Marko Nagode
University of Ljubljana
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Jernej Klemenc
University of Ljubljana
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Abstract

A novel multi-axial energy-based approach is presented and used to demonstrate the influence of different finite element (FE) modelling techniques on the prediction of the fatigue life of a rubber composite with long oriented fibres. It is shown that the simplest modelling methods using 2D elements with rebar layers, layered 2D elements or layered 3D elements do not allow for a precise determination of the critical location and damage value. In contrast, modelling methods with 3D matrix and discrete reinforcement provide much better results. The predicted critical location corresponds to the measured one, although the predicted fatigue life still differs from the measured results. The most complex microscopic modelling method shows the best agreement between the predicted and measured fatigue life. Since microscopic modelling is not suitable for modelling larger products made of rubber fibre composite, it is also noted that modelling techniques with 3D matrix and discrete reinforcing elements can be used with the same accuracy if the fatigue life curve is obtained from measurements on the specimens made of composite material rather than the specimens made of the critical base material (rubber).

Peer review status:UNDER REVIEW

10 Aug 2020Submitted to Fatigue & Fracture of Engineering Materials & Structures
10 Aug 2020Assigned to Editor
10 Aug 2020Submission Checks Completed
10 Aug 2020Reviewer(s) Assigned
01 Sep 2020Review(s) Completed, Editorial Evaluation Pending