Extending the overlay method in order to capture the variation due to amplitude in the frequency dependence of the dynamic stiffness and loss during cyclic loading of elastomers
Author
Summary, in English
The current work focus on the overlay method proposed by Austrell concerning frequency dependence of the dynamic modulus and loss angle that is known to increase more with frequency for small amplitudes than for large amplitudes. The original version of the overlay method yields no difference in frequency dependence with respect to different load amplitudes. However, if the elements in the viscoelastic layer of the finite element model are given different stiffness and loss properties depending on the loading amplitude level, frequency dependence is shown to be more accurate compared to experiments. The commercial finite element program Ansys is used to model an industrial metal rubber part using two layers of elements. One layer is a hyper viscoelastic layer and the other layer uses an elasto-plastic model with a multi-linear kinematic hardening rule. The model, being intended for stationary cyclic loading, shows good agreement with measurements on the harmonically loaded industrial rubber part.
Department/s
Publishing year
2015
Language
English
Pages
205-218
Publication/Series
Constitutive Models for Rubber IX - Proceedings of the 9th European Conference on Constitutive Models for Rubbers, ECCMR
Document type
Conference paper
Publisher
CRC Press/Balkema
Topic
- Textile, Rubber and Polymeric Materials
Conference name
9th European Conference on Constitutive Models for Rubbers, ECCMR 2015
Conference date
2015-09-01 - 2015-09-04
Conference place
Prague, Czech Republic
Status
Published
ISBN/ISSN/Other
- ISBN: 9781138028739