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Science Forum Index » Math - Numerical Analysis Forum » Looking for an implementation of the Newmark scheme for nume
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| mr.d.poon@gmail.com |
 Posted: Wed Jan 24, 2007 8:18 am |
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Hi everyone
This is my first post ever to this group. I don't lurk here, but after
trawling through the archives, I think Im safe in saying that this
question has not been asked before.
Ive got a highly nonlinear system, and I understand that the Newmark
scheme the traditional choice for solving these. Searching Netlib and
the like for an existing implementation of this scheme does not yield
any results. Does anybody have an implementation in C or Fortran that
they are willing to share?
Alternatively, are there any suggestions for any other schemes that
will cope nicely with a highly nonlinear system and have an
implemenation out there for ready download (free or otherwise)?
Cheers
Daniel Poon
www.romaxtech.com |
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| Evgenii Rudnyi |
| Posted: Thu Jan 25, 2007 5:15 pm |
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Quote: Ive got a highly nonlinear system, and I understand that the Newmark
scheme the traditional choice for solving these. Searching Netlib and
the like for an existing implementation of this scheme does not yield
any results. Does anybody have an implementation in C or Fortran that
they are willing to share?
I have an implementation in Mathematica at
http://modelreduction.com/soft/Post4MOR/Post4MOR.m
Search for AnsysTransientSolution that ends with /;
SecondOrderSystemQ[sys]. As you will see, the function is not that
long, so it should not be too difficult to program it. You need just to
have at hand basic linear algebra subroutines.
Best wishes,
Evgenii Rudnyi
erudnyi at cadfem point de
http://modelreduction.com/ |
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| mr.d.poon@gmail.com |
| Posted: Fri Jan 26, 2007 8:31 am |
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Quote: http://modelreduction.com/soft/Post4MOR/Post4MOR.m
Search for AnsysTransientSolution that ends with /;
SecondOrderSystemQ[sys]. As you will see, the function is not that
long, so it should not be too difficult to program it. You need just to
have at hand basic linear algebra subroutines.
Best wishes,
Evgenii Rudnyi
Thanks, I'll look into it.
btw have you considered making it available using the LGPL, rather than
GPL?
Daniel |
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