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  1. nazariosr

    Any good NASTRAN books?

    how about: "introduction to finite element analysis and nastran utilization" by L.I. Nagy It discusses the theory and output of the solution.
  2. nazariosr

    Poor mans way of FEA with increased Virtual Memory.

    Jason, I am almost certain that the answer is NO: 1. 32-bit processors are limited to 4-Gbytes 2. the compiler might limit how much memory can access 3. Win-XP Professional has a limit of 4-Gbytes. 4. the application dynamic libraries might be compiled for 32-bit processor -- thus cannot go...
  3. nazariosr

    Nastran op2 file format/structure

    Cosmic Nastran used to publish Nastran Programmers Manual where they will show the OP file structure. MSC has changed the structure and I could not read it using the Cosmic file structure. MSC Programmers Manual seems to be outdated becaue it covers version 68.2.3R2. I do not believe MSC...
  4. nazariosr

    Nastran Books-Manuals

    A very good book is published by NE-Nastran titled: "NE-Nastran User's Manual" which discusses Solution type, HowTo setup the model, Interpreting Results, Assumptions & Limitations. Publisher: Trafford Publishing You can order it from: OnDemandManuals.com Catalog Number: 03-2453 Or from Noran...
  5. nazariosr

    Dual processors and such

    Igbav8r, the settings listed above only work with Win-XP Professional and not with the home-edition. An alternative, is to make a dual-boot and use Linux instead of Win-XP. You will still be restricted to 2Gb by MSC-Nastran because of the 32-bit limitation. Sorry.
  6. nazariosr

    Dual processors and such

    As far as I know, MSC-Nastran is still 32-bit If you are running MS Win-XP Professional, you can raise the memory limit to 3 Gb by modifying the boot.init file: go to: start -> settings -> ctrl-panel -> system ->advance PICK: settings in "start & recovery" area PICK: edit in "default operating...
  7. nazariosr

    Releasing a forced displacement

    Maybe the NOLIN forcing functions could do the trick instead of SPCD????
  8. nazariosr

    File size limits

    Drej, I had a similar problem running into a filesize limit and here is what I found: 1. fat, jffs, jffs2 and romfs only support 2Gb or 4 Gb 2. ext2, ext3, reinsferfs do not specify a max filesize (LFS) 3. jfs, xfs support large filesize 4. the standard linux filesystems support LFS (ext2,ext3...
  9. nazariosr

    automounting

    gtp36, I presume that by now you have solved the automount problem. If you did, then ignore this, if not then check the AUTOMOUNT configuration file: NFSCONF For the HP, the file is located at: /etc/rc.config.d This file stores the options for AUTOMOUNT The comments inside the file will help...
  10. nazariosr

    Impact of Young's modulus on Constraints

    Sev, if what you refer as "constraint" is actually known as STRESS then this is why: STRESS = Force / Area; If you study Hooke's Law, then, STRESS = E * STRAIN, where E=Young's Modulus. Thus, we have: STRESS = Force / Area = E * STRAIN Then, STRAIN = (E * Force)/Area This is why your...
  11. nazariosr

    Demonstrating ROI of FEA

    I was asked a similar question a long time ago and here is how I did it while being the supervisor of the analysis dept. 1. assigned one engineer to do the analysis and then recorded the number of hours from begining to end + also calculated the actual cost for the software & hardware to get...
  12. nazariosr

    stress calculation from strain gauge

    It will be easier if you compare the Strain results with the Experimental Strain values. The strain gauge only measures plane strain which assumes that the strain normal to the surface is approx zero. A rossette strain gauge will give you simultaneous readings in two direction but still assumes...

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