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  1. JLKDS

    Clutch slippage problem

    Hi all, I have been developing a pulley system which allows the user to lift a 50kg weight by turning a wheel. The pulley system has a mechanical advantage of 3 and there is also a 2:1 gear exchange along the line. There is a one way clutch bearing that stops the weight from falling (basically...
  2. JLKDS

    Scissor Lift Mechanism

    Hello, I am designing a scissor lift mechanism with one arm 3 times the length of the other arms, with the remaining arms being symmetric. The mechanism is loaded at the end of the long arm. I am trying to determine what would be the force acting upwards at point A but it's proving to be a bit...
  3. JLKDS

    Which potentiometer?

    Hello all, I am trying to find the correct potentiometer to dim LEDs. I am aware that PWM should be used for efficient and linear dimming, but in the name of speed and simplicity I would like to just use a potentiometer. The LEDs will draw a maximum of 90W and are 12V. Will I need a...
  4. JLKDS

    Contact between two parts in SimXpert

    I want to perform FEA on a bracket for a top hung sliding door by modelling the weight of the door as two point loads where the bolts will be. The bracket will then be hanging from an axle (Shown in yellow) that is in turn connected to the wheel, but for simplicity I have been modelling the...
  5. JLKDS

    Gravity in SimXpert

    Hello guys, Having a bit of trouble with gravity on an I-beam section on SimXpert. When using gravity under global LBCs, into 'Acceleration vector scale factor', I enter 9810mm/s^2 as my units are in mm, correct? I have checked my density is also in kg/mm^3 (i.e. 7.85e-6 for mild steel). Yet...
  6. JLKDS

    Continuous Beam Support Loads

    Hello all, I am trying to calculate the support loads on a 10m I-beam that will be fixed at 1m intervals. There are 4 point loads representing trolleys but I will not be treating them as live loads at this point. I am using SimXpert 2012 to try and model the beam by meshing a straight curve and...

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