A review on stochastic multiscale analysis for FRP composite structures

2022 ◽  
pp. 115132
Author(s):  
Xiao-Yi Zhou ◽  
Sheng-Yu Qian ◽  
Neng-Wei Wang ◽  
Wen Xiong ◽  
Wen-Qing Wu
Keyword(s):  
Composite Structures ◽  
Multiscale Analysis ◽  
Frp Composite

Multiscale Analysis of Multifunctional Composite Structures

2013 ◽  
Author(s):  
Yehia Bahei-El-Din ◽  
Amany Micheal
Keyword(s):  
Finite Element ◽  
Electric Field ◽  
Composite Structures ◽  
Multiscale Analysis ◽  
Fibrous Composite ◽  
Computation Time ◽  
Local Fields ◽  
Composite Medium ◽  
Field Analysis ◽  
Laminated Structures

In a truly multiscale analysis of multilayered composites, the underlying phenomena are represented and their effect on the overall behavior is determined considering the interaction between the different phases and between the laminas. The analysis gets more involved when multiple phenomena are considered since in this case not only the direct effects play a role but also the coupled effects contribute to the distribution of the local fields and the overall response. In a fibrous composite laminate reinforced with piezoelectric filaments, for example, passing an electric field in the fibers generates stresses and strains which propagate through the composite medium due to constraints that exist both at the micromechanical, ply level, and the macromechanical, laminate level. Pyroelectricity is another coupling phenomenon in which a temperature change is caused by an electric field, and hence leads to changes in the stress and strain fields throughout the composite medium. The above phenomena have been considered by the authors in a unified, transformation field analysis (TFA) approach in which stresses and strains which cannot be removed by mechanical unloading are treated as transformation fields. Due to mutual constraints of the phases and the bonded plies, local transformations generate stresses at the micro and macro levels, which are computed by means of influence functions which depend on material geometry and properties. Treatment of damage follows the same scheme but the transformation fields are instead determined such that the local stresses in the affected phase are removed. In the present paper, implementation of the TFA approach in a general purpose finite element code is described. This expands the multiscale analysis outlined above to composite structures where complex geometries can be modeled and the effect of local phenomena can be considered. This naturally comes at a much larger cost of the computations compared to finite element analysis with homogenized models but the benefit of obtaining a more realistic response is clear. Moreover, the availability of high performance computing and parallel processing overcomes the computation time barrier. In the present paper however, simple examples of laminated structures are given as proof of concept in which the results are compared to those of standalone routines. Since the TFA approach centers on treating the composite medium as elastic with induced local transformations, implementation in the finite element framework does not require generation of an overall instantaneous stiffness matrix, which saves tremendously on the computation time. Instead, overall transformation strains, or stresses, are computed through a multiscale model, which is implemented as a user routine, and treated in the general finite element solution as nonmechanical strains in the same way thermal strains are treated.

scholarly journals An Energy-Based Concept for Yielding of Multidirectional FRP Composite Structures Using a Mesoscale Lamina Damage Model

Polymers ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 157 ◽  
Author(s):  
Seyed Rahimian Koloor ◽  
Atefeh Karimzadeh ◽  
Noorfaizal Yidris ◽  
Michal Petrů ◽  
Majid Ayatollahi ◽  
...  
Keyword(s):  
Yield Point ◽  
Composite Structures ◽  
Failure Modes ◽  
Initial Slope ◽  
Dissipation Energy ◽  
Fiber Failure ◽  
Damage Initiation ◽  
Frp Composite ◽  
Structural Applications ◽  
Evolution Curve

Composite structures are made of multidirectional (MD) fiber-reinforced polymer (FRP) composite laminates, which fail due to multiple damages in matrix, interface, and fiber constituents at different scales. The yield point of a unidirectional FRP composite is assumed as the lamina strength limit representing the damage initiation phenomena, while yielding of MD composites in structural applications are not quantified due to the complexity of the sequence of damage evolutions in different laminas dependent on their angle and specification. This paper proposes a new method to identify the yield point of MD composite structures based on the evolution of the damage dissipation energy (DDE). Such a characteristic evolution curve is computed using a validated finite element model with a mesoscale damage-based constitutive model that accounts for different matrix and fiber failure modes in angle lamina. The yield point of composite structures is identified to correspond to a 5% increase in the initial slope of the DDE evolution curve. The yield points of three antisymmetric MD FRP composite structures under flexural loading conditions are established based on Hashin unidirectional (UD) criteria and the energy-based criterion. It is shown that the new energy concept provides a significantly larger safe limit of yield for MD composite structures compared to UD criteria, in which the accumulation of energy dissipated due to all damage modes is less than 5% of the fracture energy required for the structural rupture.

Multiscale analysis of woven composite structures in MSC.Nastran

2019 ◽  
Vol 135 ◽  
pp. 102677 ◽  
Author(s):  
Xin Liu ◽  
Federico Gasco ◽  
Wenbin Yu ◽  
Johnathan Goodsell ◽  
Khizar Rouf
Keyword(s):  
Composite Structures ◽  
Multiscale Analysis ◽  
Woven Composite

A Fiber Optic System for Damage Assessment of FRP Composite Structures

1984 ◽  
Vol 96 (6) ◽  
pp. 52-56 ◽  
Author(s):  
ROGER M. CRANE ◽  
ALEKSANDER B. MACANDER
Keyword(s):  
Damage Assessment ◽  
Composite Structures ◽  
Fiber Optic ◽  
Optic System ◽  
Frp Composite ◽  
Fiber Optic System

FRP Composite Structures

2021 ◽  
Author(s):  
Hota V. S. GangaRao ◽  
Woraphot Prachasaree
Keyword(s):  
Composite Structures ◽  
Frp Composite

Multiscale analysis in nonlinear thermal diffusion problems in composite structures

Open Physics ◽  
2010 ◽  
Vol 8 (4) ◽  
Author(s):  
Claudia Timofte
Keyword(s):  
Asymptotic Behavior ◽  
Temperature Field ◽  
Thermal Diffusion ◽  
Composite Structures ◽  
Multiscale Analysis ◽  
Dynamical Boundary Condition ◽  
Periodic Composite ◽  
Two Component ◽  
New System ◽  
Diffusion Problems

AbstractThe aim of this paper is to analyze the asymptotic behavior of the solution of a nonlinear problem arising in the modelling of thermal diffusion in a two-component composite material. We consider, at the microscale, a periodic structure formed by two materials with different thermal properties. We assume that we have nonlinear sources and that at the interface between the two materials the flux is continuous and depends in a dynamical nonlinear way on the jump of the temperature field. We shall be interested in describing the asymptotic behavior of the temperature field in the periodic composite as the small parameter which characterizes the sizes of our two regions tends to zero. We prove that the effective behavior of the solution of this system is governed by a new system, similar to Barenblatt’s model, with additional terms capturing the effect of the interfacial barrier, of the dynamical boundary condition, and of the nonlinear sources.

Glass Covered Magnetic Micro-Wires Operating in the Domain Wall Nucleation and Propagation Sensing Mode for Stress Detection in FRP Composite Structures

2014 ◽  
Vol 12 (10) ◽  
pp. 1481-1487
Author(s):  
Spiridon Konstantopoulos ◽  
Stelios Potirakis ◽  
Angelos Christopoulos ◽  
Ralf Schledjewski ◽  
Evangelos Hristoforou
Keyword(s):  
Domain Wall ◽  
Composite Structures ◽  
Stress Detection ◽  
Frp Composite
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