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Recent content by oldriver

  1. oldriver

    About the comparison of Pneumatic servo and Servo motor

    I am doing one automation machine system about diamond specification selection. Now considering the machine power type, the servo system now is new to me. and I would like to get some information about the pneumatic servo and servo motor. If there is anyone familiar with this, I would be very...
  2. oldriver

    How do I optimize the wide screen display with CATIA V5?

    I found the following information about this question, but can anybody show me the method or command to operate or set up the CATIA software to solve this problem? "When using a large monitor (like a 23” flat screen or the HP nw8240 Mobil Workstation), a circle in V5 will appear as an ellipse...
  3. oldriver

    The relation between resonant frequency and elastic modulus

    Really thanks~! I think I got the relation between these two. Since the atoms in solid materials are constantly vibrating at very high frequencies and with relatively small amplitudes. And the vibrations of adjacent atoms are coordinating with the atomic bonding. These vibrations are...
  4. oldriver

    The relation between resonant frequency and elastic modulus

    Yeah, thanks for the suggestion and solutions provided, but I am still wondering the micromechanism of these two. I think the material crystalline strcture will determine the resonant frequency, since this is related to the Young's modulus and which is dominantely determined by the binding...
  5. oldriver

    The relation between resonant frequency and elastic modulus

    Why the natural resonant frequency of a material is a funtion of elastic modulus?

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