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Global stiffness of a SMC panel considering process induced fiber orientation
KTH, Superseded Departments, Fibre and Polymer Technology.ORCID iD: 0000-0001-5818-2378
2004 (English)In: Journal of reinforced plastics and composites (Print), ISSN 0731-6844, E-ISSN 1530-7964, Vol. 23, no 1, 37-49 p.Article in journal (Refereed) Published
Abstract [en]

A material model, that translates into a stiffness matrix, the second order fiber orientation tensor, described by Advani and Tucker, and the stiffness matrix of a composite with aligned ellipsoidal inclusions, has been implemented in a FE programme and validated. The stiffness of a SMC panel with known state of fiber orientation is calculated using FEM. The influence of process induced fiber orientation is analysed. The fiber orientation for a realistic charge pattern for the panel has been obtained through mould filling simulation in a separate project. It is found that the fiber orientation has a rather small impact on the global stiffness. Only 0.8% lower stiffness compared to isotropic material model is obtained taking into account the fiber orientation distribution. The main reason for the low impact of the process induced fiber orientation is that the charge is symmetrically placed in the mould leading to a symmetric fiber orientation distribution.

Place, publisher, year, edition, pages
2004. Vol. 23, no 1, 37-49 p.
Keyword [en]
SMC, stiffness prediction, anisotropic stiffness, material modelling
Identifiers
URN: urn:nbn:se:kth:diva-23108DOI: 10.1177/0731684404028700ISI: 000188378000003OAI: oai:DiVA.org:kth-23108DiVA: diva2:341806
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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Berglund, Lars A.

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