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Introductory redAnTS Tutorial
This is an introductory tutorial on the redAnTS finite-element analysis (FEA) toolbox that runs within MATLAB. After the toolbox is installed, it can be called from MATLAB by typing redAnTS at the MATLAB prompt. This tutorial takes you through the steps for solving a simple problem with a known solution from elementary theory. This is handy since we can validate the FEA solution by comparing it with the corresponding theoretical result. After you have done a number of FEA solutions for basic problems and validated the results against theory or handbook values, you'll be off running and ready to tackle more complex problems that don't readily yield to paper-and-pencil calculations. (But don't throw the pencil out since it is absolutely essential to verify the computational results with
...
back-of-the-envelope
...
calculations.
...
Consider
...
this
...
as
...
advice
...
from
...
somebody
...
who
...
has
...
been
...
bitten
...
many
...
times
...
in
...
uncomfortable
...
parts
...
of
...
the
...
anatomy
...
by
...
easily
...
trusting
...
results
...
that
...
the
...
computer
...
spits
...
out.)
...
Basic
...
familiarity
...
with
...
MATLAB
...
is
...
assumed;
...
so
...
keep
...
your
...
MATLAB
...
wits
...
around
...
as
...
you
...
indulge
...
in
...
this
...
tutorial.
...
Happy
...
computing
...
!
...
Problem
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Specification
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The
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humble
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rectangular
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block
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shown
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below
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is
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under
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uniaxial
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tension.
...
Note
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the
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dimensions
...
of
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the
...
block.
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The
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applied
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normal
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traction
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on
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faces
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with
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normals
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parallel
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to
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x'
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is
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75
...
MPa.
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The
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Young's
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modulus
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of
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the
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material
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is
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200
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GPa
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and
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the
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Poisson
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ratio
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is
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0.3.
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We'll
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assume
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that
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plane
...
stress
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conditions
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apply.
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We'll
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employ
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friendly
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redAnTS
...
to
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solve
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this
...
problem
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using
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FEA.
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We'll
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plot
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various
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components
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of
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stress
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and
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strain
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for
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the
...
block
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and
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compare
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them
...
with
...
theory.
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Solution
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Steps
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The
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FEA
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solution
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is
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divided
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into
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the
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following
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steps:
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- Step
...
- 1:
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- Pre-Analysis
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- &
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- Start-Up
...
- Step
...
- 2:
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- Geometry
- Step 3: Mesh
- Step 4: Setup (Physics)
- Step 5: Solution
- Step 6: Results
- Step 7: Verification and Validation
Let's dive into step 1 without further ado.
Go to Step 1: Pre-Analysis & Start-Up