Constitutive error based material parameter estimation procedure for hyperelastic material
An ECE based parameter estimation technique for hyperelastic material is proposed. Incompatible stressstrain pair is generated via two forward problems. Penalty approach is adopted to generate strains that weakly satisfy measurements. An alternating strategy is followed to solve the underlying optimization problem. Explicit material parameter update formula is derived.
hyperelastic material constitutive relation error inverse problem nonlinear elasticity trace minimization