Compaction modelling of textile preforms for composite structures

This paper deals with modelling the compaction behaviour of dry fibre assemblies using an energy minimisation scheme. Compaction behaviour of textile preforms can significantly influence the resin permeability, fibre volume fraction and the geometry of individual tows. Tow geometry will in turn affect the elastic properties of the laminate, mode of damage initiation and progression. In this work, constitutive properties of yarns in bending and transverse compression were measured using Kawabata Evaluation System, and used for computing the potential energy stored in individual yarn segments within a preform. The compaction model has been experimentally verified for single and multi-layer 2D fabrics and 3D fabrics.

[1]  Constantina Lekakou,et al.  Compression and microstructure of fibre plain woven cloths in the processing of polymer composites , 1998 .

[2]  C. M. van Wyk,et al.  20—NOTE ON THE COMPRESSIBILITY OF WOOL , 1946 .

[3]  Jun Wang,et al.  Prediction of shear force using 3D non-linear FEM analyses for a plain weave carbon fabric in a bias extension state , 2002 .

[4]  J. Hearle,et al.  11—AN ENERGY METHOD FOR CALCULATIONS IN FABRIC MECHANICS PART I: PRINCIPLES OF THE METHOD , 1978 .

[5]  Tsu-Wei Chou,et al.  Compaction of woven-fabric preforms: nesting and multi-layer deformation , 2000 .

[6]  Constantina Lekakou,et al.  Compression in the processing of polymer composites 1. A mechanical and microstructural study for different glass fabrics and resins , 1999 .

[7]  T. Chou,et al.  Compaction of woven-fabric preforms in liquid composite molding processes: single-layer deformation , 1999 .

[8]  Tae Jin Kang,et al.  Analysis of Compressional Deformation of Woven Fabric Using Finite Element Method , 2001 .

[9]  A. Newton,et al.  Low-load Lateral-compression Behaviour of Woven Fabrics , 1997 .

[10]  Stepan Vladimirovitch Lomov,et al.  MODELLING OF TWO-COMPONENT YARNS. PART I: THE COMPRESSIBILITY OF YARNS , 1997 .

[11]  Ignace Verpoest,et al.  Compression of Woven Reinforcements: A Mathematical Model , 2000 .

[12]  Mitsuo Matsudaira,et al.  Features and Mechanical Parameters of a Fabric's Compressional Property , 1995 .

[13]  Tsu-Wei Chou,et al.  Experimental and theoretical studies of fabric compaction behavior in resin transfer molding , 2001 .

[14]  S. De Jong,et al.  A Mechanical Model for the Lateral Compression of Woven Fabrics , 1986 .

[15]  P. R. Pinnock,et al.  The mechanical properties of solid polymers , 1966 .