"SfR Fresh" - the SfR Freeware/Shareware Archive 
Member "felt-3.07/man/man1/felt.1" of archive felt-3.07.src.tar.gz:
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felt - command line based Finite ELemenT engine
felt
[-help] [-version] [-debug] [-preview] [-summary] [-plot] [+table] [-transfer]
[-orthonormal] [-eigen] [-renumber] [-matrices] [-graphics filename] [-nocpp]
[-cpp filename] [-Dname[=value]] [-Uname] [-Idirectory] [filename]
Felt
is a command line based finite element engine which reads a felt(4fe) file
and writes the results to standard output. If no filename is given then
the standard input is used. Any syntactic or semantic errors are reported
to standard error. A complete description of the mathematics can be found
in the user’s guide.
Felt accepts the following options:
- -version
- Write
the current version number and exit.
- -help
- Write a message describing valid
command line options to standard error and exit.
- -debug
- Write the processed
file to standard output in the form of a valid input file.
- -preview
- Write
an ASCII rendering of the problem geometry.
- -summary
- Write a material summary
describing the total length, area, and volume of each material used to
standard output.
- -plot
- Include a time-displacement plot in the output of a
transient analysis problem.
- +table
- Do not output a table of times vs. displacements
in the output of a transient analysis problem. Simple tabular output is
the default.
- -transfer
- Only compute transfer functions for spectral analysis
(stop calculations before output spectra are computed).
- -eigen
- Only perform
the eigenvalue calculations (natural frequencies and mode shapes) in modal
analysis.
- -orthonormal
- Use orthonormal mode shapes when calculating modal
matrices (normalize the eigenvectors such that the modal mass matrix is
the identity matrix).
- -renumber
- Make an attempt at optimally renumbering
the nodes in order to minimize the storage requirements of the stiffness
(and mass and damping) matrices. This option will invoke a GPS/Gibbs-King
renumbering algorithm. For small problems the extra overhead of this algorithm
is probably not worth the effort. For large problems (> 100 nodes or so)
the savings in both memory and overall execution time can be quite significant
however.
- -matrices
- Print the global (stiffness, mass, damping) matrices that
are appropriate to the analysis type for this problem.
- -graphics filename
- Create filename as a graphics file in gnuplot(1) format for visualizing
the structure. This option is used by xfelt(1fe).
- -nocpp
- Do not use a preprocessor
on the input file.
- -cpp filename
- Use filename as a preprocessor on the input
file. The default preprocessor is "/lib/cpp". Any preprocssor which understands
the -D, -U, and -I options can be used as these options are passed to the
preprocessor.
Felt was developed by Jason I. Gobat (jgobat@mit.edu)
and Darren C. Atkinson (atkinson@ucsd.edu).
corduroy(1fe), gnuplot(1),
velvet(1fe), burlap(1fe), felt(4fe).
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