ATOA Scientific Technologies Engineering Simulation For Innovation Multiphysics Design of Materials DrRaj C Thiagarajan ATOA Scientific Technologies Materials need to meet structural, thermal, and electromagnetic and transport property requirements simultaneously for various new applications.Thispresentationprovidesanoverviewofmultiphysicsdesignof materials with special reference to composites using micromechanics. The unitcell modeling and property prediction methodology are detailed. The elasticmodulus,thermalconductivity,diffusioncoefficientpredictionmethod and results are reported. A two stage sequentially coupled method is also outlined for accelerated application and material development for metamaterials. Composite processing related micromechanical models to predict permeability is also reported. The material properties related to productandprocessdesignaspectoffiberreinforcedandcellularcomposites arehighlighted.
Multiphysics Design of Materials with a special reference to composites. Materials need to meet structural, thermal, and electromagnetic and transport property requirements simultaneously for various new applications. This presentation provides an overview of multiphysics design of materials with special reference to composites using micromechanics. The unitcell modeling and property prediction methodology are detailed. The elastic modulus, thermal conductivity, diffusion coefficient prediction method and results are reported. A two stage sequentially coupled method is also outlined for accelerated application and material development for metamaterials. Composite processing related micromechanical models to predict permeability is also reported. The material properties related to product and process design aspect of fiber reinforced and cellular composites are highlighted.
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ATOA Scientific TechnologiesEngineering Simulation For Innovation
Multiphysics Design of Materials
Dr Raj C ThiagarajanATOA Scientific Technologies
Materials need to meet structural, thermal, and electromagnetic and
transport property requirements simultaneously for various new
applications. This presentation provides an overview of multiphysics design of
materials with special reference to composites using micromechanics. The
unitcell modeling and property prediction methodology are detailed. The
and results are reported. A two stage sequentially coupled method is also
outlined for accelerated application and material development for
metamaterials. Composite processing related micromechanical models to
predict permeability is also reported. The material properties related to
product and process design aspect of fiber reinforced and cellular composites
are highlighted.
ATOA Scientific Technologies Engineering Simulation For Innovation
Composite Materials provide us the unique opportunity to
engineering material with required Designer properties.
Combination of two or more constituents to perform better
than individual constituents.
Macroscopically homogeneous and microscopically inhomogeneous.
Homogeneous at n length scale and heterogeneous at (n-1) length scale.
Composite?
Nature
References:
Balsa wood : Gibson, L.J. and Ashby, M.F., 1999. Cellular Solids: Structure and Properties, Cambridge University Press, 1999.
Toucan beak: Seki Y. et.al.,Structure and mechanical behavior of a toucan beak, Acta Materialia, 53 ,5281–5296, 2005. http://www.theallineed.com/engineering/06012421.htm
Designer Materials…
ATOA Scientific Technologies Engineering Simulation For Innovation
Multiphysics Design of MaterialsC
AD
Mo
de
l
Structural Elastic constants
Super structural
Thermal Thermal conductivity
Superinsulation
Electromagnetic permeability and permittivity
Metamaterials
AcousticSound transmission loss
Acoustic bandgaps
TransportDiffusion
PermeabilitySuper flow
Current
Designer properties
Future
Extremel Properties
ATOA Scientific Technologies Engineering Simulation For Innovation
The Physics
Physics Governing Eqs* Constitute Eqs* Comments
StructuralStatic:, Navier’s equation, Hooke’s law for stress strain relation. F, volume forces, σ,stress tensor, ε, strain tensor, D, stiffness matrix