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  • Users: DJL Eng
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  1. DJL Eng

    Perpendicularity Stack-up

    Can perpendicularity tolerances stack-up? See the attached picture for an illustration. I could not find the answer on this site or elsewhere. I am a GD&T noob so I apologize if this is a silly inquiry. Assume compliance with ASME...
  2. DJL Eng

    Stiffness Matrix/ Solving for Displacements Problem

    I apologize in advance since this might be more of a math problem. I'm trying to learn FEA and I'm going through the first example problem from the "Practical Stress Analysis with Finite Elements" book by Bryan Mac Donald. Here is the problem: I don't get how we can just take the first line/...
  3. DJL Eng

    Member slippage/ bolts in bearing?

    I am trying to determine bolt stresses from a resulting shock load. A component is bolted to a mounting plate and the mounting plate is bolted to a fixed structure (see attached sketch). The system sees some acceleration due to shock. We cannot bolt the component directly to the structure...
  4. DJL Eng

    Shock Requirement Interpretation

    I hope I've found the correct forum to post this. I was given a job assignment to evaluate a component under shock load. I am completely new to this type of analysis and was hoping to get some clarity on a note I found on a related drawing. The note says: "Maximum force transmitted during...

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