Please use this identifier to cite or link to this item:
|Title:||A visco-hyperelastic constitutive description of elastomeric foam|
|Authors:||Yang, L.M. |
|Citation:||Yang, L.M., Shim, V.P.W. (2004-09). A visco-hyperelastic constitutive description of elastomeric foam. International Journal of Impact Engineering 30 (8-9) : 1099-1110. ScholarBank@NUS Repository. https://doi.org/10.1016/j.ijimpeng.2004.03.011|
|Abstract:||This study focuses on the constitutive modelling of finite deformation in elastomeric polyurethane foams - in particular, PORON-4701-59-25045-1648 (0.4g/cm3 density) and PORON-4701-59-20093-1648 (0.32g/cm3 density). Their mechanical properties under compression, for engineering strains up to about 80%, are characterized over a range of strain rates between 10-2 and 103/s. Dynamic compression is applied using a split Hopkinson pressure bar device. Experimental results show that the behaviour of elastomeric foam is sensitive to strain rate and can be described by a visco-hyperelastic material model. In this model, the quasi-static response is defined by compressible hyperelasticity, whereby the strain energy potential is assumed to be representable by a newly proposed polynomial series with three independent parameters. Strain rate sensitivity is characterized by incorporating a nonlinear Maxwell relaxation model with four parameters. The (seven) material parameters in the constitutive model are determined from high-speed mechanical testing methods tailored for high-compliance materials. A comparison of predictions based on the proposed frame-independent constitutive equation with experiments shows that the model is able to describe the rate dependent behaviour of the elastomeric foams examined. © 2004 Elsevier Ltd. All rights reserved.|
|Source Title:||International Journal of Impact Engineering|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Feb 14, 2019
WEB OF SCIENCETM
checked on Jan 29, 2019
checked on Jan 26, 2019
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.