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Structural Engineering and Mechanics Volume 59, Number 4, August25 2016 , pages 601-619 DOI: https://doi.org/10.12989/sem.2016.59.4.601 |
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Dynamic visco-hyperelastic behavior of elastomeric hollow cylinder by developing a constitutive equation |
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Masoud Asgari and Sanaz S. Hashemi
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| Abstract | ||
| In this study, developments of an efficient visco-hyperelastic constitutive equation for describing the time dependent material behavior accurately in dynamic and impact loading and finding related materials constants are considered. Based on proposed constitutive model, behaviour of a hollow cylinder elastomer bushing under different dynamic and impact loading conditions is studied. By implementing the developed visco-hyperelastic constitutive equation to LS-DYNA explicit dynamic finite element software a three dimensional model of the bushing is developed and dynamic behaviour of that in axial and torsional dynamic deformation modes are studied. Dynamic response and induced stress under different impact loadings which is rarely studied in previous researches have been also investigated. Effects of hyperelastic and visco-hyperelastic parameters on deformation and induced stresses as well as strain rate are considered. | ||
| Key Words | ||
| visco-hyperelastic constitutive equation; elastomer bushing; impact loading; explicit FEM | ||
| Address | ||
| Masoud Asgari and Sanaz S. Hashemi: Faculty of Mechanical Engineering, K. N. Toosi University of Technology, Tehran, Iran | ||