3D Finite Element Modeling for Particle-Reinforced Polymer Composites for Wind Energy Application

2011 ◽  
Vol 189-193 ◽  
pp. 2177-2180 ◽  
Author(s):  
Huai Wen Wang ◽  
Hong Wei Ji ◽  
Wen Quan Shao ◽  
Hui Miao
Keyword(s):  
Finite Element ◽  
Finite Element Models ◽  
Reinforced Composites ◽  
Random Parameters ◽  
Development Environment ◽  
Microstructural Parameters ◽  
Reinforced Polymer ◽  
Mechanical Models ◽  
Energy Application ◽  
Properties Of Composites

A series of numerical meso-mechanical models for different kinds of particle (include spherical, cylindrical and discal) reinforced composites are developed to investigate the effect of microstructural parameters on the elastic properties of composites. In these models, an effective interface concept is adopted. Finite element models with prescribed and random parameters are automatically generated in ABAQUS PDE (Python Development Environment). In the simulative investigations, it is observed that the degree of particle clustering and particle’s shape have strong effects on the elastic mechanical properties of composites.

Influence of low-velocity impact-induced delamination on electrical resistance in carbon fiber-reinforced composite laminates

2018 ◽  
Vol 52 (25) ◽  
pp. 3461-3470 ◽  
Author(s):  
Robert J Hart ◽  
OI Zhupanska
Keyword(s):  
Finite Element ◽  
Carbon Fiber ◽  
Electrical Resistance ◽  
Low Velocity Impact ◽  
Finite Element Models ◽  
Fiber Reinforced ◽  
Low Velocity ◽  
Velocity Impact ◽  
Reinforced Polymer ◽  
Carbon Fiber Reinforced

In this paper, experiments have been performed and finite element models have been developed for studying the influence of low-velocity impact damage on the four-probe electrical resistance of carbon fiber-reinforced polymer matrix laminates. Sixteen-ply and 32-ply AS4/3501-6 laminates with quasi-isotropic layup were analyzed. Electrical resistance was evaluated using a four-step procedure. First, finite element models were created in Abaqus Finite Element Analysis (FEA) for simulating low-velocity impact using a quasi-static loading approach. Second, matrix rupture in the inside plies was evaluated, and delamination analysis was performed at the corresponding interfaces to determine delamination patterns. Third, four-probe electrical finite element models were developed in Abaqus FEA for specimens before and after impact using the concept of effective conducting thickness and the delamination patterns obtained from the delamination analysis. Effects of the low-velocity impact delamination on four-probe top and oblique electrical resistance were studied. Electrical resistance predictions were compared to the experimental data. Both top and oblique resistance planes were sensitive to presence of delamination with the oblique resistance measurement being more sensitive as compared to the top resistance measurement. In addition, the resistance of the 16-ply specimens was more greatly affected by the delamination compared to the 32-ply specimens. The proposed analysis can be utilized for design of carbon fiber-reinforced polymer matrix composites with optimized damage sensing capabilities.

Three-dimensional finite element models and tensile properties of carbon fiber needled felt reinforced composites

2019 ◽  
Vol 50 (3) ◽  
pp. 293-311
Author(s):  
Leilei Song ◽  
Yufen Zhao ◽  
Li Chen ◽  
Yingdan Zhu ◽  
Jialu Li
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Carbon Fiber ◽  
Tensile Properties ◽  
Three Dimensional ◽  
Finite Element Models ◽  
Reinforced Composites ◽  
Dimensional Finite Element ◽  
Inclusion Theory ◽  
Three Dimensional Finite Element

In this study, the three-dimensional finite element models of carbon fiber needled felt reinforced composites were built by using the embedded element technique and the virtual yarn method. Three sizes of samples for carbon fiber needled felt reinforced composites were designed and prepared. The tensile properties were investigated by experiments and theoretical methods, and the influences of sample size on tensile modulus were discussed. The results showed that, the longitudinal tensile moduli of carbon fiber needled felt reinforced composites decreased with the increase of sample size. Compared with the rule of mixtures and the inclusion theory, the longitudinal tensile moduli obtained by finite element method were closer to the experimental values. In addition, the transverse tensile moduli obtained by finite element method were greater than that obtained by the rule of mixtures and the inclusion theory. That was due to the orientation of some fibers had a proportion along the thickness. It was concluded that, these three-dimensional finite element models can be used to investigate the elastic properties of carbon fiber needled felt reinforced composites with different sizes.

Computational Analysis of the Effects of Microstructures on Damage and Fracture in Heterogeneous Materials

2006 ◽  
Vol 306-308 ◽  
pp. 489-494 ◽  
Author(s):  
Leon Mishnaevsky
Keyword(s):  
Finite Element ◽  
Composite Materials ◽  
Spherical Particles ◽  
Finite Element Models ◽  
Reinforced Composites ◽  
Damage Growth ◽  
New Methods ◽  
Damage And Fracture ◽  
Numerical Testing ◽  
Methods Of Reconstruction

3D FE (finite element) simulations of the deformation and damage evolution of particle reinforced composites are carried out for different microstructures of the composites. Several new methods and programs for the automatic reconstruction of 3D microstructures of composites on the basis of the geometrical description of microstructures as well as on the basis of the voxel array data have been developed and tested. Different methods of reconstruction and generation of finite element models of 3D microstructures of composite materials (geometry-based and voxel array based) are discussed and compared. It was shown that FE analyses of the elasto-plastic deformation and damage of composite materials using the microstructural models of materials generated with these methods yield very close results. Numerical testing of composites with random, regular, clustered and gradient arrangements of spherical particles is carried out. The fraction of failed particles and the tensile stress-strain curves were determined numerically for each of the microstructures. It was found that the rate of damage growth as well as the critical applied strain, at which the damage growth in particles begins, depend on the particle arrangement, and increase in the following order: gradient < random < regular < clustered microstructure.

Finite element models of natural fibers and their composites: A review

2018 ◽  
Vol 37 (9) ◽  
pp. 617-635 ◽  
Author(s):  
Xiaoshuang Xiong ◽  
Shirley Z Shen ◽  
Lin Hua ◽  
Jefferson Z Liu ◽  
Xiang Li ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Thermal Properties ◽  
Natural Fiber ◽  
Natural Fibers ◽  
Volume Element ◽  
Fiber Reinforced Composites ◽  
Finite Element Models ◽  
Reinforced Composites ◽  
Fiber Reinforced

Finite element method has been widely applied in modeling natural fibers and natural fiber reinforced composites. This paper is a comprehensive review of finite element models of natural fibers and natural fiber reinforced composites, focusing on the micromechanical properties (strength, deformation, failure, and damage), thermal properties (thermal conductivity), and macro shape deformation (stress–strain and fracture). Representative volume element model is the most popular homogenization-based multi-scale constitutive method used in the finite element method to investigate the effect of microstructures on the mechanical and thermal properties of natural fibers and natural fiber reinforced composites. The representative volume element models of natural fibers and natural fiber reinforced composites at various length scales are discussed, including two types of geometrical modeling methods, the computer-based modeling method and the image-based modeling method. Their modeling efficiency and accuracy are also discussed.

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