Using Full Field Data to Produce a Single Indentation Test for Fully Characterising the Mooney Rivlin Material Model

Abstract

A theoretical testing method for fully characterising the Mooney-Rivlin three-parameter hyper-elastic material model is proposed by capturing full-field digital image correlation (DIC) data, namely displacement field and indentation force data. A finite element model with known parameters will act as the experimental model against which all data will be referenced (a preliminary test case). Going forward this stand-in model will be replaced with physical test data. This paper also introduces a new concept, the concept of hyperplanes. These hyperplanes represent regions in the force and displacement field data where all the objective function values are equal. The paper concludes that the Mooney-Rivlin material model can theoretically be fully characterised in a single indentation test. By applying the methods discussed in the paper when using full-field data operating under the assumption of hyper-planes.