Finite element investigations on the microstructure of fibre-reinforced composites

Maligno, Angelo; Warrior, N.A.; Long, A.C.

doi:10.3144/expresspolymlett.2008.79

Cited by 37 publications

(18 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This was to ensure better comparison with some published data and our experimental data as well as to show the effect of the properties of constituents on the composite properties. A comparative method has been performed [23]. 3.…”

Section: Methodsmentioning

confidence: 99%

Modelling of polypropylene fibre-matrix composites using finite element analysis

Houshyar¹,

Shanks²,

Hodzic³

2009

Express Polym. Lett.

View full text Add to dashboard Cite

Abstract. Polypropylene (PP) fibre-matrix composites previously prepared and studied experimentally were modelled using finite element analysis (FEA) in this work. FEA confirmed that fibre content and composition controlled stress distribution in all-PP composites. The stress concentration at the fibre-matrix interface became greater with less fibre content. Variations in fibre composition were more significant in higher stress regions of the composites. When fibre modulus increased, the stress concentration at the fibres decreased and the shear stress at the fibre-matrix interface became more intense. The ratio between matrix modulus and fibre modulus was important, as was the interfacial stress in reducing premature interfacial failure and increasing mechanical properties. The model demonstrated that with low fibre concentration, there were insufficient fibres to distribute the applied stress. Under these conditions the matrix yielded when the applied stress reached the matrix yield stress, resulting in increased fibre axial stress. When the fibre content was high, there was matrix depletion and stress transfer was inefficient. The predictions of the FEA model were consistent with experimental and published data.

show abstract

Section: Methodsmentioning

confidence: 99%

Modelling of polypropylene fibre-matrix composites using finite element analysis

Houshyar¹,

Shanks²,

Hodzic³

2009

Express Polym. Lett.

View full text Add to dashboard Cite

show abstract

Section: Microscopic Computational Model Of Carbon-fiber Reinforced Cmentioning

confidence: 99%

Initial damage induced by thermal residual stress and microscopic failure analysis of carbon-fiber reinforced composite under shear loading

Han

Guan

et al. 2015

Composite Interfaces

View full text Add to dashboard Cite

In order to study the mechanical properties and the progressive failure process of composite under shear loading, a representative volume element (RVE) of fiber random distribution was established, with two dominant damage mechanisms -matrix plastic deformation and interfacial debonding -included in the simulation by the extended Drucker-Prager model and cohesive zone model, respectively. Also, a temperature-dependent RVE has been set up to analyze the influence of thermal residual stress. The simulation results clearly reveal the damage process of the composites and the interactions of different damage mechanisms. It can be concluded that the in-plane shear fracture initiates as interfacial debonding and evolves as a result of interactions between interfacial debonding and matrix plastic deformation. The progressive damage process and final failure mode of in-plane shear model which are based on constitute are very consistent with the observed result under scanning electron microscopy of V-notched rail shear test. Also, a transverse shear model was established as contrast in order to comprehensively understand the mechanical properties of composite materials under shear loading, and the progressive damage process and final failure mode of composite under transverse shear loading were researched. Thermal residual stress changes the damage initiation locations and damage evolution path and causes significant decreases in the strength and fracture strain.

show abstract

“…While for the epoxy resin, the properties are defined as functions of temperature, taking into account the strong influence of glass transition temperature T g on the mechanical properties. The relations are summarized as follows, which are first proposed by Zhang et al [10] and then used by many researchers [11,12]: (a) Poisson's ratio is assumed to be temperature independent with a value of v m ¼ 0:346. (b) To evaluate the variation of Young's modulus E m over the temperature range from curing to room temperature, the total temperature range can be divided into three regions:…”

Section: Temperature Dependent Materials Propertiesmentioning

confidence: 99%

Damage evolution and multi-scale analysis of carbon fiber-reinforced cross-ply laminate with thermal residual stress

Han

Guan

2015

Composite Interfaces

View full text Add to dashboard Cite

In order to study the mechanical and thermal properties of carbon fiber-reinforced cross-ply laminate, a macroscopic [90/0] 8S cross-ply laminate model and a unit cell of fiber regular distribution near the [90/0] 8S laminate interlaminar zone with plastic matrix and interface were created. Then the damage initiation discipline details of [90/0] 8S cross-ply laminate are researched, and the effects of interfacial coefficient of thermal expansion on thermal residual stress distribution and damage initiation are researched in detail both based on the macroscopic and microscopic models. It shows that the initial damage of interlaminar interface occurs in macroscopic model and the initial damage in microscopic model occurs both at intralaminar interface and interlaminar cohesive zone. No matter in macroscopic or microscopic model, the residual stress of 6.27 × 10 −6 /°C interfacial coefficient of thermal expansion is larger than that of 6.27 × 10 −7 /°C interfacial coefficient of thermal expansion. And the initial damage expands more widely in the first one.

show abstract

Finite element investigations on the microstructure of fibre-reinforced composites

Cited by 37 publications

References 35 publications

Modelling of polypropylene fibre-matrix composites using finite element analysis

Modelling of polypropylene fibre-matrix composites using finite element analysis

Initial damage induced by thermal residual stress and microscopic failure analysis of carbon-fiber reinforced composite under shear loading

Damage evolution and multi-scale analysis of carbon fiber-reinforced cross-ply laminate with thermal residual stress

Contact Info

Product

Resources

About