Moderate deformations in extension-torsion of incompressible isotropic elastic materials

摘要: Abstract It has been previously shown by anand (1979) that the classical strain energy function of infinitesimal isotropic elasticity is in good agreement with experiment for a wide class materials moderately large deformations, provided measure occurring replaced Hencky or logarithmic finite strain. The basis Anand's paper relating Hencky's to was data from experiments on metals and rubbers uniaxial strain, simple tension compression, pure shear. Here, test further validity this moderate its predictions twisting moment axial force torsion combined extension-torsion solid cylinders incompressible are calculated be R ivlin S aunders (1951) vulcanized natural rubber. Indeed, better accord than widely used Mooney (or Mooney-Rivlin) function.