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Recent content by musacci

  1. musacci

    Help with the three point bending test of a composite rod

    Thank you everyone for your replies, could anyone confirm if this approach would be correct: I express the bending rigidity of the composite beam as the sum of the bending rigidity of the separate components: EcompositeIcomposite=EcoreIcore+EsheathIsheath From this I can estimate the...
  2. musacci

    Help with the three point bending test of a composite rod

    Hi MintJulep, thanks for your reply, however I don't understand what you mean. The deflection in my experiments is equal since the two core and the sheath are chemically bonded together. What do you mean by "solve each simultaneously"? And how should I divide the load into parts to be applied...
  3. musacci

    Help with the three point bending test of a composite rod

    I cannot seem to find the theory for a concrete beam reinforced by a single rod. Other than that it should be quite similar.
  4. musacci

    Help with the three point bending test of a composite rod

    Thanks for the reply, I had thought of that but my problem is slightly different since I'm using a rod (circular cross section) and not a beam. Also, the whole rod is surrounded by a material which has a different elastic modulus. I was thinking of calculating the spring constant of the outer...
  5. musacci

    Help with the spring constant of a composite rod

    Hello everyone, I am trying to evaluate the spring constant of a coaxial polymer cylindrical fiber. This fiber has a stiff core and a more soft sheath. I know the geometry of the system and I know the Young's moduli of both components. I can find separate models for the core or for the sheath...
  6. musacci

    Help with the three point bending test of a composite rod

    Hello everyone, I am trying to evaluate the spring constant of a coaxial polymer cylindrical fiber. This fiber has a stiff core and a more soft sheath. I know the geometry of the system and I know the Young's moduli of both components. I can find separate models for the core or for the sheath...

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