Boundary Element Methods For Functionally Graded Materials
Author(s)
G. H. Paulino, A. Sutradhar & L. J. Gruy
Abstract
Boundary element methods for functionally
graded materials
G.H. ~aulino', A. ~utradhar' & L.J. ~ r a ~ ~
I Department of Civil and Environmental Engineering,
University of Illinois at Urbana-Champaign, USA.
2~omputer Science and Mathematics Division,
Oak Ridge National Laboratory, USA.
Abstract
Functionally graded materials (FGMs) posscss a smooth variation of
material properties due to gradual change in microstructural details. For
example, the material gradation may change gradually from a pure ceramic
to a pure metal. This work focuses on three-dimensional potential (both
stcady state and transient) and clasticity problems for inhomogeneous
materials. The Green's function (GF) for these materials (exponentially
gradcd) are cxpressed as the GF for the hornogcneous material plus
additional terms due to material gradation. The numerical implementations
are performed using a Galerkin (rather than collocation) approximation.
The results of test calculations are in good agreement with available
Keywords
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