Implementation of failure criteria for transverse failure of orthotropic Non-Crimp Fabric composite materials

2021 ◽

Vol 5 (2) ◽

pp. 36

Author(s):

Aleksander Muc

Keyword(s):

Composite Materials ◽

Composite Structures ◽

Constitutive Relations ◽

A Priori ◽

Chemical Properties ◽

Composite Plates ◽

Failure Criteria ◽

Lagrange Equations ◽

Homogenization Methods ◽

Mechanics Of Composite Materials

The main goal of building composite materials and structures is to provide appropriate a priori controlled physico-chemical properties. For this purpose, a strengthening is introduced that can bear loads higher than those borne by isotropic materials, improve creep resistance, etc. Composite materials can be designed in a different fashion to meet specific properties requirements.Nevertheless, it is necessary to be careful about the orientation, placement and sizes of different types of reinforcement. These issues should be solved by optimization, which, however, requires the construction of appropriate models. In the present paper we intend to discuss formulations of kinematic and constitutive relations and the possible application of homogenization methods. Then, 2D relations for multilayered composite plates and cylindrical shells are derived with the use of the Euler–Lagrange equations, through the application of the symbolic package Mathematica. The introduced form of the First-Ply-Failure criteria demonstrates the non-uniqueness in solutions and complications in searching for the global macroscopic optimal solutions. The information presented to readers is enriched by adding selected review papers, surveys and monographs in the area of composite structures.

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Strength Simulation of Woven Fabric Composite Materials with Material Nonlinearity Using Micromechanics Based Model

Journal of Thermoplastic Composite Materials ◽

10.1177/0892705703016001864 ◽

2003 ◽

Vol 16 (1) ◽

pp. 5-20 ◽

Cited By ~ 15

Author(s):

A. Tabiei ◽

G. Song ◽

Y. Jiang

Keyword(s):

Composite Materials ◽

Material Nonlinearity ◽

Woven Fabric ◽

Fabric Composite

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MULTILEVEL, MICROMECHANICAL MODEL FOR THERMAL ANALYSIS OF WOVEN-FABRIC COMPOSITE MATERIALS

Journal of Thermal Stresses ◽

10.1080/01495730490255718 ◽

2004 ◽

Vol 27 (1) ◽

pp. 59-73 ◽

Cited By ~ 13

Author(s):

Y. W. Kwon ◽

W. M. Cho

Keyword(s):

Thermal Analysis ◽

Composite Materials ◽

Micromechanical Model ◽

Woven Fabric ◽

Fabric Composite

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ABS Fabrics Chemically Plated by Cu/Ni-P as Electromagnetic Shielding Material

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.306-307.385 ◽

2011 ◽

Vol 306-307 ◽

pp. 385-388

Author(s):

Cheng Da Yu ◽

Qi Bin Deng ◽

Ping Li ◽

Ming Cun Wang ◽

Yong Feng Wang

Keyword(s):

Composite Material ◽

Composite Materials ◽

High Frequency ◽

Gradual Increase ◽

Electromagnetic Shielding ◽

Shielding Effect ◽

Ideal Candidate ◽

Varying Thickness ◽

Fabric Composite ◽

Shielding Material

In this paper, a novel composite material of Acrylonitrile-Butadlene-Styrene resin (ABS)-based fabric coated with Cu/Ni-P was prepared via chemical redox plating technique. A series of such composite materials with varying thickness of Cu and Ni-P showed remarkable electromagnetic shielding ability. With the increase of Cu thickness, the shielding effect (SE) increased gradually, but leveled off after 1.5μm at a SE of about 70dB. Similarly, with the increase of the depth of Ni-P coats, the SE showed a trendency of gradual increase, and leveled off after 1.0μm at a SE of about 45dB. The optimum ABS/Cu/Ni-P was Cu 1.5μm and Ni-P 1.0μm unilaterally. The ABS/Cu/Ni-P composite material possessed excellent shielding ability in the range of 0.001-1000MHz at a stable SE of >80dB, and it also possessed ideal shielding effect in the range of >36GHz. But in the range of 10-18GHz, the shielding effect is slightly decreased gradually to about 60dB. So the ABS/Cu/Ni-P fabric composite is an ideal candidate for electromagnetic shielding material at low and high frequency radiations.

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Strength Simulation of Woven Fabric Composite Materials With Material Nonlinearity Using Micromechanics Based Model

10.1115/imece2000-2472 ◽

2000 ◽

Author(s):

A. Tabiei ◽

G. Song ◽

Y. Jiang

Keyword(s):

Finite Element ◽

Shear Failure ◽

Material Model ◽

Failure Criteria ◽

Woven Fabric ◽

Woven Composites ◽

Explicit Finite Element ◽

Representative Cell ◽

Pure Matrix ◽

Transverse Failure

Abstract The objective of the current investigation is to predict failure strength of woven composites, which considers the two-dimensional extent of woven fabric, based on micro-mechanics. The formulation has an interface with nonlinear finite element codes. At each load increment, global stresses and strains are communicated to the representative cell and subsequently distributed to each subcell. Once stresses and strains are associated to a subcell they can be distributed to each constituent of the subcell (i.e. fill, warp, and resin). Consequently micro-failure criteria (MFC) are defined for each constituents of a subcell and the proper stiffness degradation is modeled. Different stages of failure such as warp transverse failure, fill transverse failure, failure of pure matrix in longitudinal and shear, shear failure in fill and warp, and fiber in fill and warp in longitudinal tension are considered. Good correlation is observed between the predicted and the experimental results presented in the published literature. This material model is suitable for implicit failure analysis under static loads and is being modified for explicit finite element codes to deal with problems such as crashworthiness and impact.

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