Identification strategies for recovering material parameters from indentation experiments

摘要

This papers reports the progress obtained by the authors on the development of a numerical method for the identification of material parameters from indentation experiments. The proposed technique minimizes a least squares cost functional using gradient descent methods. It has previously been shown that the adjoint state method can be extended to variational inequalities and this permits to compute the gradient of the cost functional with low numerical cost. Using this technique a series of identifications from indentation experiments have been done and their results are discussed in the sequel.