Identification of Parameters of a Nonlinear Material Model Considering the Effects of Viscoelasticity and Damage

This work deals with mechanical properties of a rubber material that is used in modern tram wheels as a damping element. Nonlinear static response as well as strain softening and hysteresis are captured in the material model that is selected. Method of identification of the model's parameters i...

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Bibliographic Details
Published inComputers, materials & continua Vol. 33; no. 3; pp. 257 - 273
Main Authors Heczko, Jan, Kottner, Radek, Kroupa, Tomáš
Format Journal Article
LanguageEnglish
Published Henderson Tech Science Press 2013
Subjects
Compression tests
Computer simulation
Damage
Damping
Data compression
Materials selection
Mathematical models
Mechanical properties
Nonlinear response
Nonlinearity
Parameter identification
Plastic deformation
Rubber
Shear
Strain softening
Trams
Viscoelasticity
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Summary:This work deals with mechanical properties of a rubber material that is used in modern tram wheels as a damping element. Nonlinear static response as well as strain softening and hysteresis are captured in the material model that is selected. Method of identification of the model's parameters is developed. The identification method relies on successive minimizations with respect to different sets of parameters. Tests in tension, compression and simple shear are performed. Parameters of the material model are identified based on the tension and compression data, while the shear data are used for validation only.
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ISSN:1546-2218
1546-2226
DOI:10.3970/cmc.2013.033.257