Recent content by joslopher

  1. J

    Unconstrained Modal Analysis

    I am not sure about the assumption that the wheels are "bounded" to the ground by the weight of the structure... Should I constraint also the positive z-direction on those nodes corresponding to the link to wheels because of the weight? Weight affects to all nodes of the structure, so...
  2. J

    Vibration of a bicycle frame

    However, I am not sure about the assumption that the wheels are "bounded" to the ground by the weight of the bike... Should I constraint also the positive z-direction on those nodes corresponding to the link to wheels because of the weight? But weight affects to all nodes of the structure...
  3. J

    Unconstrained Modal Analysis

    Ok! Thank you very much!
  4. J

    Vibration of a bicycle frame

    Ok! Thank you very much!
  5. J

    Unconstrained Modal Analysis

    Hi, I have the same doubt about unconstrained modal analysis. I do not know exactly why it is useful for. I do not know how to get some insight into where are the best constraint locations from the unconstrained analysis. Related to it, if I had to perform a modal analysis of a box-like...
  6. J

    Modal Analysis

    Hi, I am not sure about the performance of free-free modal analysis in ANSYS. If I wanted to get the natural frequencies of a box-like structure with four wheels (at each corner of the bottom surface) by means of FE-analysis, should it be performed as constrained or unconstrained ? Indeed...
  7. J

    Modal analysis

    Hi, If I wanted to get the natural frequencies of a box-like structure with four wheels (at each corner of the bottom surface) by means of FE-analysis, should it be performed as constrained or unconstrained ? Indeed, the wheels are not bounded to the ground, so please, could you help me? Thank...
  8. J

    Vibration of a bicycle frame

    Hi, If I wanted to get the natural frequencies of the bicycle frame by means of FE-analysis, should it be performed as constrained or unconstrained ? Indeed, the wheels are not bounded to the ground, so please, could you help me? Thank you very much
  9. J

    Need an help in Modal Analysis

    Hi, Why did you perform a free-free modal analysis? Why it is useful for? I mean, you should always have into account the constraints, shouldn't you?
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