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  1. murcott

    Plastic Deformation of Beam Elements

    Hi Guys, Thank you for the help and suggestions. I'll try what Blas has suggested first, although I think i've tried using those material settings to no avail. Failing that, I'll try the approaches suggested by FEMACAE and rb1957. Cheers. Murcott
  2. murcott

    Plastic Deformation of Beam Elements

    I am trying to model plastic deformation of a beam model in FEMap. I have set the model up in the same manner described in the examples tutorial "Plastic Deformation of Rod - Nonlinear Material" which uses rod elements. Rod elements will retain the plastic deformation, but when I change them...
  3. murcott

    Chain Tensioner Wheel

    Hi Guys, I am trying to find a tensioner wheel for an 8mm pitch simplex chain (05B). I cant find anything on the internet specific to this type of chain. Does anyone know where I can find one? Thanks, Ben
  4. murcott

    Wind Turbine Generators

    Cheers guys, I've considered car alternators before. I could modify one but this could prove a real mission fitting the permanent magnets etc. I'll repost this link on the fieldlines forum. Ta
  5. murcott

    Wind Turbine Generators

    Hello Everybody, I am building my own wind turbine. I need a gearless (direct drive) three phase axial flux generator. I'm making a really small turbine where which produces200W at wind speeds of 6 to 8m/s. The generator needs to operate at a low rpm to minimise the size of my gear ratio...
  6. murcott

    Dynamic Braking

    Hi All , Mike, I have followed your suggestion. The following link shows a schematic of the rectifier. http://en.wikipedia.org/wiki/File:Tridge_(three-phase_bridge)_rectifier_(symbolic_diagram).png I think I've figured out why i'm losing so much resistive force in the brake. My shottky...
  7. murcott

    Dynamic Braking

    Hi Lionel, It is a three phase ,dual rotor, axial flux alternator that has permanent magnets. So it is not an induction motor. This type of alternator is commonly used by wind turbines. It is standard practice to rectify the current to DC. With regards to braking, I agree , the system will...
  8. murcott

    Dynamic Braking

    An interesting discussion starting here , thanks. Mike - Yes, I just crudely short the leads together. To answer all, I am intent on making a regenerative brake for a bicylce. I am keeping it as a Dynamic brake for the time being to keep it simple. My aim is to use the DC current to charge a...
  9. murcott

    Dynamic Braking

    Dear All, I am building a Dynamic Braking system. This is where the magnetic forces generated in a motor are used to act as a brake, simply by closing the circuit. http://en.wikipedia.org/wiki/Dynamic_braking I have built a three phase alternator and attached a pulley system to it so that I...
  10. murcott

    Dynamic Braking

    Dear All, I am building a Dynamic Braking system. This is where the magnetic forces generated in a motor are used to act as a brake, simply by closing the circuit. http://en.wikipedia.org/wiki/Dynamic_braking I have built a three phase alternator and attached a pulley system to it so that I...

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