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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...

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...

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...

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

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.

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...

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...

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...

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 =...

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...

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...