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Parameter Identification of Fiber Orientation Models Based on Direct Fiber Simulation with Smoothed Particle Hydrodynamics

Meyer, Nils; Saburow, Oleg; Hohberg, Martin; Hrymak, Andrew N.; Henning, Frank; Kärger, Luise

Abstract (englisch):
The behavior of fiber suspensions during flow is of fundamental importance to the process simulation of discontinuous fiber reinforced plastics. However, the direct simulation of flexible fibers and fluid poses a challenging two-way coupled fluid-structure interaction problem. Smoothed Particle Hydrodynamics (SPH) offers a natural way to treat such interactions. Hence, this work utilizes SPH and a bead chain model to compute a shear flow of fiber suspensions. The introduction of a novel viscous surface traction term is key to achieve full agreement with Jeffery’s equation. Careful modelling of contact interactions between fibers is introduced to model suspensions in the non-dilute regime. Finally, parameters of the Reduced-Strain Closure (RSC) orientation model are identified using ensemble averages of multiple SPH simulations implemented in PySPH and show good agreement with literature data.

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Verlagsausgabe §
DOI: 10.5445/IR/1000120482
Veröffentlicht am 25.06.2020
Originalveröffentlichung
DOI: 10.3390/jcs4020077
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Fahrzeugsystemtechnik (FAST)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 2504-477X
KITopen-ID: 1000120482
Erschienen in Journal of composites science
Band 4
Heft 2
Seiten 77
Bemerkung zur Veröffentlichung This article belongs to the Special Issue Discontinuous Fiber Composites, Volume II
Gefördert durch den KIT-Publikationsfonds
Vorab online veröffentlicht am 22.06.2020
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