Abstract
A family of one parametric infinitely differentiable hyperelastic potentials for three-dimensional problems of bimodular isotropic materials at infinitesimal strain is constructed, yielding a set of uniform approximations to the discontinuous stepwise elastic modulus adopted in the original one-dimensional bimodular formulation. The introduced potentials enable either analytical solutions or construction of the explicit governing equations for a number of static and dynamic problems. Theorem of convergence to the discontinuous bimodular modulus is proved.
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