Comparison of several closure approximations for evaluating the thermoelastic properties of an injection molded short-fiber composite
dc.contributor.author | DRAY, Delphine |
dc.contributor.author | GILORMINI, Pierre |
dc.contributor.author
hal.structure.identifier | REGNIER, Gilles
|
dc.date.accessioned | 2013 |
dc.date.available | 2013 |
dc.date.issued | 2007 |
dc.identifier.citation | Composites Science and Technology, Vol. 67, n° 7–8, p. 1601–1610 |
dc.identifier.issn | 0266-3538 |
dc.identifier.uri | http://hdl.handle.net/10985/6676 |
dc.description.abstract | The accurate prediction of both the elastic properties and the thermal expansion coefficients is very important for the precise simulation of such processes as injection molding of short-fiber polymer-matrix composites. In this work, a two-step homogenization procedure is applied and compared with experimental values obtained on a polyarylamide/glass fiber composite for a broad range of temperatures. It is observed that the stiffness averaging version of the model surpasses the compliance averaging variant, especially when it is combined with a precise evaluation of the fourth-order orientation tensor. It is also demonstrated that the orthotropic closure approximations are significantly better than previous ones (linear, quadratic, and hybrid) and than a very recent one. Among the orthotropic closure approximations, the fitted ones lead to acceptable results, which are very close to those obtained with the experimentally measured fourth-order orientation tensor. |
dc.language.iso | en |
dc.publisher | Elsevier |
dc.rights | Post-print |
dc.subject | composites |
dc.subject | fibres courtes |
dc.subject | injection |
dc.subject | thermoélasticité |
dc.title | Comparison of several closure approximations for evaluating the thermoelastic properties of an injection molded short-fiber composite |
dc.identifier.doi | 10.1016/j.compscitech.2006.07.008 |
dc.typdoc | Article dans une revue avec comité de lecture |
dc.localisation | Centre de Paris |
dc.subject.hal | Sciences de l'ingénieur: Matériaux |
ensam.audience | Internationale |
ensam.page | 1601–1610 |
ensam.journal | Composites Science and Technology |
hal.identifier | hal-00771348 |
hal.version | 1 |
hal.status | accept |