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  1. schopenhauer

    Some basic questions about composite design

    Hi, Recently I have been reading about the details of Puck's failure theory, and I reached a point where now I'm more confused than when I started, and some stuff that I thought I understood now is not so clear. So, I would like to share these basic questions to see if I can get a different...
  2. schopenhauer

    Creep and fatigue properties

    Hi guys, Does anybody know a good source of creep and fatigue properties for carbon and glass composites? Preferably, at ply level, at different orientations and stress ratios. I've only been able to found information in some papers, but very dispersed and not of much engineering value. Many...
  3. schopenhauer

    Abaqus script issue

    Hello everybody, I have been doing so many simulations for pipes lately that I decided to create a very simple plugin for Abaqus to create 1/4 section models. I didn't have any experience or knowledge building scripts for Abaqus but with the manual, the *.rpy file and a bit of imagination I got...
  4. schopenhauer

    Whirling speed of a propeller shaft

    Hello everyone, I have been assigned the task of designing a propeller shaft for a truck, one of the requirements is to avoid the phenomenon of whirling. This is a new topic for me, so I will summarise what I believe I know until now: - At certain critical speeds, the elastic deflection of the...

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