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- From: a722756@roper.mc.ti.com (W. Donald Rolph)
- Subject: Re: FEA help!
- Message-ID: <1992Dec14.181725@roper.mc.ti.com>
- Originator: a722756@roper.mc.ti.com
- Sender: usenet@pan.mc.ti.com (USENET News System)
- Organization: Texas Instruments / Attleboro Mass / USA
- References: <1992Dec14.212505.27326@cs.wayne.edu>
- Date: Mon, 14 Dec 1992 23:17:25 GMT
- Lines: 67
-
-
- This is by no means a trivial question. You must first ask the class of FEA to
- be considered:
-
- 1) rough analysis for simple scaling
- 2) detailed analysis for design verification
-
- The latter is the most typical use of FEA an basically requires a unix type
- workstation or above - the memory limitations of dos usually make dos solutions
- prohibitive in 3D, which what is generally required for desing verification (our
- typical models are on the order of 7000 to 40,000 nodes).
-
- You must also consider whether you plan to do general nonlinear analysis, or only
- linear analysis. A quick review of cpu cycles utilized in a facility suggests
- that even if a relatively small number of analyses are nonlinear, then virtaully
- all cpu cycles are being used for nonlinear analysis, and you should design your
- facility as a nonlinear facility.
-
- It is also imperative that you have a good mesh generator and graphical post
- processor. The difference between a good mesh generator and an ok mesh generator
- is about 20X in productivity.
-
- Finally you will need color hardcopy capability in order to distribute your
- results.
-
- Typical linear codes (all of whcih work at least ok) are:
-
- ANSYS
- NASTRAN
-
- Typical nonlinear codes are:
-
- ABAQUS
- ADINA
-
- You might also look at Marc if it solves special needs of yours.
-
- Commericial pre/post processors include PATRAN (I recommend rev 2.5 for now) and
- SUPERTAB from SDRC.
-
- You should also consider one of the many color postscript printers (we have
- several from seiko and Tektronix).
-
- Finally you want to get the fastest risc worklstation you can get. We have
- tested the HP9000/730, SGI R4000 based systems, and other of the new 64 bit
- floating point chips. Get yourself 2 1GB dfisc drives if you are doing this for
- real.
-
- A typical system ight cost the following (rough costs):
-
- 1) FEA program $5K - $10K year
-
- 2) Mesh generator $10K yr
-
- 3) Workstation: $25K
-
- 4) color postscript printer $5K to $10K
-
- This is nearly a 1/3 cost reduction and 10,000 performance improvement over the
- system I put together is 1983!
-
-
- --
-
- Regards.
-
- Don Rolph a722756@pan.mc.ti.com WD3 MS10-13 (508)-699-1263
-