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  • Users: dmech
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  1. dmech

    Engineering Department Woes...What to do?

    Hi Eng-Tips Forum, I have considerable engineering experience (BS + MS + PE + 15 years on the job) and have worked for a handful of companies. Recently, I was hired to work for a small company with a relatively new engineering department. Our manager holds a physics degree and is smart...
  2. dmech

    Loading on 2nd Floor Concrete Floor

    Hello Structural Guru's, I'm a mechanical engineering and develop automation equipment. I have a situation where our customer has provided a 5 kPa (104 psf) maximum 2nd Floor loading. The floor thickness is 6" and it is reinforced with rebar. I don't know the details of the reinforcement or...
  3. dmech

    Mixing Ordinate & "Standard Dimensions

    Hello, I have question regarding the practice of mixing ordinate dimensions with standard linear dimensions. Geometric Background: I have a rectangular plate with a short edge slot defining the center-line of the plate in long direction. Also the plate has four shallow and narrow pockets...
  4. dmech

    ASME Y14.41-2003 & Adobe PDF....

    Hello Forum, I don't enjoy the circular process of turning my 2D concept sketches into 3D CAD geometry, to only revert it back to a 2D engineering drawings...seems wasteful. I don't see the point in entering data twice (i.e. once in during 3D CAD and again in the 2D drawing). I don't like...
  5. dmech

    High-Vacuum CFD Analysis Methodology

    I'm trying to determine the flow bottlenecks and vacuum process time of a laser tube, using CFD software. The final pressure of the laser tube will be 2.5x10-7 torr. A high-vacuum (2.5 X 10-7 torr) will be applied to a sealed laser tube, which starts at 1 atm, with an outlet diameter of 10 mm...
  6. dmech

    CFD High-Vacuum Analysis Methodology

    I'm trying to determine the flow bottlenecks and vacuum process time of a laser tube, using CFD software. The final pressure of the laser tube will be 2.5x10-7 torr. A high-vacuum (2.5 X 10-7 torr) will be applied to a sealed laser tube, which starts at 1 atm, with an outlet diameter of 10 mm...

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