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Recent content by RX

  1. RX

    Help on setting up spring/damper mechanism for IDEAS-9

    There are spring and damper elements to chose from in the create element form. These can be either to ground (restrained globally at one end and the other attached to your model at the node(s) of your choosing) or joined between two nodes in your model. You then go set the damping and spring...
  2. RX

    Deflection Calculation of an Aluminum Plate

    Well, for the central load max deflection = Fl^3/192EI and for a UDL max deflection = wl^4/384EI, where F = central load and w = UDL. l = width of plate. The above is just basic beam theory that assumes the edges of your plate are restrained against rotation (by bolts in your case).
  3. RX

    gusset equivalence

    What I used to do when involved with pressure vessel nozzle design was to resolve the moments and apply them as a 'pulling' and 'pushing' load onto the plate on either side of the nozzle. Thus the moment load was taken out of the nozzle, which was then analyzed using WRC 297/107 methods for the...
  4. RX

    Need to increase efficiency during flywheel ramp-up

    A couple of suggestions that may help reduce current draw of your motor during startup: I used to race model cars in my younger days (now race real ones!). My experience was with electric motor cars which used small DC motors ('05' size) running on DC (7.2 V) batteries and controlled with a...
  5. RX

    Pressure container thickness

    There is no accurate short answer to your thickness versus pressure question. Thickness depends on factors other than pressure such as material strength, diameter, corrosion allowance and the best bet if you are concerned with a pressure vessel/pipe whatever is to use the correct national design...
  6. RX

    Ground Vibration

    Vibegeek, Not knowing what part of the world you are in, I can't be specific for what is most appropriate for your case. We use a German standard (english translation version!) for assessing vibration in buildings. DIN 4150-3 Structural Vibration Part 3: Effects of vibrations on structures...

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