Fiber Reorientation in Laminated and Woven Composites for Finite Element Simulations

Abstract

A simple technique for fiber reorientation in laminated and woven composite material is presented in this paper. This technique is suitable for nonlinear finite element simulations of composite structure failure. The developed technique is implemented in the nonlinear explicit finite element code DYNA3D to demonstrate the effect of the fiber reorientation on the behavior of laminated composite materials in crash simulations. The same technique is added to a woven fabric composite material micromechanical model to account for the change of the model geometry.Using an incremental approach programmed in the MATLAB software, the stiffness change of the woven composite micromechanical model as a function of the yarn tow reorientation is investigated. Significant change in the elastic properties is observed as a result of the scissoring effect and fiber reorientation in woven fabric composites.KEY WORDS: fiber reorientation in composite materials, computational micromechanical material model, woven fabric composites, textile composites, and nonlinear finite element analysis.

Numerical and experimental study of buckling behavior of delaminated plate in glass woven fabric composite laminates

“…During recent decades many researchers have studied buckling and delamination behavior of composite plates. 1–20 Chai et al 1 performed a theoretical and fundamental study on one dimensional delamination bucking of laminated plates using beam-column delamination theory. They showed that the dimensions of the delamination, the load at which it is introduced and the fracture energy influences the buckling delamination behavior of laminated plate.…”

“…During recent decades many researchers have studied buckling and delamination behavior of composite plates. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] Chai et al 1 performed a theoretical and fundamental study on one dimensional delamination bucking of laminated plates using beam-column delamination theory.…”

“…Many attempts have been performed to model the structure of fabrics. [15][16][17][18][19][20][21] Ishikawa and Chou 15,16 presented three analytical models that is, "mosaic model," "bridging model," and "fiber undulation model" for structure of woven fabric. Using these models, they predicted the stiffness and strength of composites reinforced with woven fabrics.…”

Modeling Shear Behavior of Woven Fabric Thermoplastic Composites for Crash Simulations

“…However, none of the four proposed damage formulations (linear, non-linear, constant stress level, step-based damage) are in agreement with the measured test data of organo sheets. Many authors [1,[14][15][16] have shown that the effect of fiber rotation is also essential for predicting the results. However, at large strains, the fiber rotation calculation for woven fabric is much more complex due to the curvature and locking effect in warp and weft, for which a micromechanical model must be used.…”