Interfacial damage and load transfermodeling in short fiber reinforced composites
dc.contributor.author | BONNAY, Kevin |
dc.contributor.author | DESPRINGRE, Nicolas |
dc.contributor.author | CHEMISKY, Yves |
dc.contributor.author
hal.structure.identifier | MERAGHNI, Fodil
|
dc.date.accessioned | 2016 |
dc.date.available | 2016 |
dc.date.issued | 2016 |
dc.date.submitted | 2016 |
dc.identifier.isbn | 978-3-00-053387-7 |
dc.identifier.uri | http://hdl.handle.net/10985/11174 |
dc.description.abstract | Due to the compromise between their thermomechanical properties and low density, Short Fiber Reinforced Polyamides (SFRP) present a good alternative to metals for automotive structural components. The microstructure of such materials, combined with the matrix sensitivity to environmental conditions, has a strong impact on their overall behavior and the related damage. A new multi-scale modelling strategy is proposed, based on the experimental observations of interfacial damage evolution for PA66-GF30 composites. Three main key-points have been integrated to this approach: an original damage evolution law at the interface, an appropriate load transfer law at the matrix-fiber interface, and a homogenization strategy founded on the generalized Mori-Tanaka scheme. The damage evolution law is driven by a local probabilistic criterion based on the interfacial stress field estimation. This type of evolution depends on the maximal local damage rate at the fiber/matrix interface, determined from a numerical evaluation at several points of the interface surrounding the inclusion. It is then coupled with a load transfer law formulated according to a modified shear lag model (SLM). The developed model is assessed with a finite element (FE) computation integrating cohesive elements at the matrix-fiber interface. The FE unit cell consists in a periodic media (hexagonal array) with periodic boundary conditions. The fiber-matrix interface integrates cohesive elements, with a cohesive law driven by a Paulino-Park-Roesler (PPR) potential-based formulation. The latter has been proven to be suitable for the 3D modeling of interface in reinforced composites. The proposed approach is able to accurately capture the non-linear behavior of short fiber reinforced polyamide composites accounting for interfacial damage. |
dc.description.sponsorship | FUI project Durafip, driven by Dr. Gilles Robert of Solvay Engineering Plastics |
dc.language.iso | en |
dc.rights | Post-print |
dc.subject | Interface |
dc.subject | Decohesion |
dc.subject | Cohesive zone |
dc.subject | Composite |
dc.subject | Damage |
dc.title | Interfacial damage and load transfermodeling in short fiber reinforced composites |
dc.typdoc | Conférence invitée |
dc.localisation | Centre de Metz |
dc.localisation | Institut de Chambéry |
dc.subject.hal | Sciences de l'ingénieur: Mécanique: Matériaux et structures en mécanique |
dc.subject.hal | Sciences de l'ingénieur: Mécanique: Mécanique des matériaux |
dc.subject.hal | Sciences de l'ingénieur: Mécanique: Mécanique des solides |
ensam.audience | Internationale |
ensam.conference.title | ECCM17 - 17 th European Conference on Composite Materials |
ensam.conference.date | 2016-06-26 |
ensam.country | Allemagne |
ensam.city | Munich |
ensam.peerReviewing | Oui |
ensam.proceeding | Oui |
hal.identifier | hal-01363857 |
hal.version | 1 |
hal.submission.permitted | updateFiles |
hal.status | accept |