General Mechanical

General Mechanical

Topics relate to Mechanical Enterprise, Motion, Additive Print and more


    • m.caragiuli


      I have to run the simulation of a hyperelastic material subjected to a force.  I have uniaxial tension and compression experimental data and I want to use the nonlinear Ogden model regarding the material. Since the Ogden 1st order doesn't fit properly, is it correct to use a 2nd order Ogden model to represent the hyperelastic material? I know Ogden is expressed in terms of principal stretches, since uniaxial data involve the stretching and compression along one principal stretch direction I'm not sure if a second order could be applied. It seems that during curve fit solving using a 2nd order ogden, the estimated constants are quite similar to each other. 

      What do you think?


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