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Modelling compressive cyclic stress-strain behaviour of structural foam

Shen, Y. / Golnaraghi, F. / Plumtree, A.

Polyurethane foam, similar to that used for protection in automotive interiors has been subjected to continuous compressive cycling. The loading and unloading stress-strain relationships for any given cycle can be fully described by applying Ogden's modified model for compressible rubber. The accumulated dissipated energy that indicates the vibration damping capacity of the material may be expressed in the form of a simple mathematical function. The concept of loading path dissipated energy (LDE) using the Weibull function has been applied to express the manner in which cyclic damage accumulates.

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Modelling compressive cyclic stress-strain behaviour of structural foam

Shen, Y. / Golnaraghi, F. / Plumtree, A.

Polyurethane foam, similar to that used for protection in automotive interiors has been subjected to continuous compressive cycling. The loading and unloading stress-strain relationships for any given cycle can be fully described by applying Ogden's modified model for compressible rubber. The accumulated dissipated energy that indicates the vibration damping capacity of the material may be expressed in the form of a simple mathematical function. The concept of loading path dissipated energy (LDE) using the Weibull function has been applied to express the manner in which cyclic damage accumulates.

Modelling compressive cyclic stress-strain behaviour of structural foam

Shen, Y. / Golnaraghi, F. / Plumtree, A.

Polyurethane foam, similar to that used for protection in automotive interiors has been subjected to continuous compressive cycling. The loading and unloading stress-strain relationships for any given cycle can be fully described by applying Ogden's modified model for compressible rubber. The accumulated dissipated energy that indicates the vibration damping capacity of the material may be expressed in the form of a simple mathematical function. The concept of loading path dissipated energy (LDE) using the Weibull function has been applied to express the manner in which cyclic damage accumulates.

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Title:

Modelling compressive cyclic stress-strain behaviour of structural foam

Contributors:

Shen, Y. (author) / Golnaraghi, F. (author) / Plumtree, A. (author)

Published in:

International Journal of Fatigue ; 23 ; 491-497

Publication date:

2001

Size:

7 Seiten, 17 Quellen

ISSN:

DOI:

https://doi.org/10.1016/S0142-1123(01)00014-7

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Strukturanalyse , Druckspannung , Spannungsanalyse , mathematisches Modell , Wechsellastbeanspruchung , Energieverlust , Dämpfung , mechanische Schwingung , Weibull-Verteilung , Polyurethan , Spannungs-Dehnungs-Verhalten , Schaum , Strukturschaum , Druckbeanspruchung

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