Modeling of coupled dual-scale flow–deformation processes in composites manufacturing
Journal article, 2013

The present contribution is a part of the work towards a framework for holistic modeling of composites manufacturing. Here we focus our attention onto the particular problem of coupled dual-scale deformation– flow process such as the one arising in RTM, Vacuum Assisted Resin Infusion (VARI) and Vacuum Bag Only (VBO) prepregs. The formulation considers coupling effects between macro-scale preform processes and meso-scale ply processes as well as coupling effects between the solid and fluid phases. The framework comprises a nonlinear compressible fiber network saturated with incompressible fluid phase. Internal variables are introduced in terms of solid compressibility to describe the irreversible mesoscopic infiltration and reversible preform compaction processes. As a main result a coupled displacement– pressure, geometrically nonlinear, finite element simulation tool is developed. The paper is concluded with a numerical example, where a relaxation–compression test of a planar fluid filled VBO preform at globally un-drained and partly drained conditions is considered.

E. Consolidation

C. Finite Element Analysis (FEA)

E. Forming



Mohammad Sadegh Rouhi

Chalmers, Applied Mechanics, Material and Computational Mechanics

Maciej Wysocki

Chalmers, Applied Mechanics, Material and Computational Mechanics

Ragnar Larsson

Chalmers, Applied Mechanics, Material and Computational Mechanics

Composites Part A: Applied Science and Manufacturing

1359-835X (ISSN)

Vol. 46 1 108-116

Subject Categories

Mechanical Engineering

Applied Mechanics

Composite Science and Engineering


Basic sciences


C3SE (Chalmers Centre for Computational Science and Engineering)

Areas of Advance

Materials Science



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