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  1. brianabreugomes

    Nastran Displacement Coordinate System

    Hi Richard, I know nothing about PATRAN but the displacement coordinate system is defined on the GRID ID output coordinate system. Whatever that coordinate system, the *.f06 file should print the displacements. You should be able to define this in PATRAN. Run some tests. Define the GRID in...
  2. brianabreugomes

    Understanding bar element moments in Nastran F06 file

    Hi Marty, My only suggestion to you is you need to dumb-down the model to understand what you are seeing. You should create a very simple cantilever model (rectangular cross-section with no offsets, x-dir. being longnitual and y & z follow the RH rule) using beam elements. Have it simple...
  3. brianabreugomes

    NEiNastran - Contact Surface-to-Surface using Shell Elements

    Hi, Having huge difficulties at the moment. I'm hoping someone here can help. I created a nastran model of two plates. Each plate is 96"L x 24"W x 1" THK (Aluminum). In reality, the plates overlap eachother by 2" along its width(and there is no gap between them). Each plate has is its far...
  4. brianabreugomes

    Determin CR3245 Static Joint Strength Substantiation

    Thanks Wil. I will contact them and hopefully I'll get a response. I'll let you know what they say.
  5. brianabreugomes

    Determin CR3245 Static Joint Strength Substantiation

    I am trying to determine a Static Joint Strength Substantiation for CR3245 Fastener. This is a 'Unisink' fastener made by Cherry Aerospace. It is supposedly equivalent to a NAS9306B, M7885/28, HR3245 or AF3245. If anyone has any ideas, your help is appreciated. Thanks.
  6. brianabreugomes

    Contour Thickness with PSHEAR Properties not working?

    Hi all, I am currently running Femap v9.3. I have noticed that when I use the "Custom Tools/Visualization/Thickness To Output", I get results for elements that are PSHELL but not elements that are PSHEAR (countour shows it all as 0. thickness, and the . I do not know why??? Any help is...
  7. brianabreugomes

    Show Calculated Rod Effective Area for CSHEAR

    Sorry it took soooo long to say thanks. Been in Italy on special projects for a while. That makes sense...haha...that really helps a lot...much appreciated. I am doing a little experiment to see what are the different results using different methodology when FEM of a basic rectangular wing...
  8. brianabreugomes

    Show Calculated Rod Effective Area for CSHEAR

    Hi guys...need a little help in understanding something here. I am using CSHEAR's to model some spar & rib webs for a typical wing structure. I have rib caps and spar caps modeled which run in the X & Y direction. But I have no stiffeners in the Z direction so I am putting in F1 or F2 values...
  9. brianabreugomes

    Show Calculated Rod Effective Area for CSHEAR

    Hi guys...need a little help in understanding something here. I am using CSHEAR's to model some spar & rib webs. I have rib caps and spar caps modeled. But I have no stiffeners in the vertical direction so I am putting in F1 or F2 values to take the vertical direction loads. I am using F2 =...
  10. brianabreugomes

    R.H. Gallagher Report, 1960

    Hi, I am looking for the following report but I do not have the money to buy one. I was wondering if anyone can upload it on the engineering.com site. AGARD-400 "Experimental & Theoretical Determination of the Elastic Characteristics of Modern Airframes". I saw a report done by BA about...
  11. brianabreugomes

    Looking For R.H. Gallagher Report, 1960

    Hi, I am looking for the following report but I do not have the money to buy one. I was wondering if anyone can upload it on the engineering.com site. AGARD-400 "Experimental & Theoretical Determination of the Elastic Characteristics of Modern Airframes". I say a report done by BA about...

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