Recent content by kiwi_zt

  1. K

    Estimating balloon internal pressure

    Got it. Thanks a lot! Regarding testing of the material properties, could I get away with using a uniaxial testing machine?
  2. K

    Estimating balloon internal pressure

    I see! Just to check - this is assuming that the thickness of the stretched rubber is significantly smaller than the stretched radius, right? So you're taking ##2\pi r## (circumference) multiplied by the thickness, ##h## to get the cross sectional area? Technically I wouldn't be able to blow...
  3. K

    Estimating balloon internal pressure

    Hi Chestermiller, thanks for taking the time to answer my question. I am a little confused with how you arrived at that equation. I know you mentioned doing a force balance on the upper hemisphere, but I don't really understand. I apologise if the answer is obvious!
  4. K

    Estimating balloon internal pressure

    Hi guys, firstly this is not a homework question despite looking like one. I'm curious about how one would go about estimating the internal pressure in a compliant balloon. I am assuming that I would need the following: 1. Stress-strain curve of the material 2. Diameter of the uninflated...
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