Inverse Identification of the Elasto-Plastic Response of Metals at High Strain Rates

摘要

The study of the mechanical behavior of materials at high strain rates is of growing interest in many engineering applications such as automotive crash-tests and high speed machining. Current high strain rate techniques such as the split-Hopkinson bar fail to provide reliable experimental data for material model identification, particularly at low strains. In the paper, inertial impact tests, ultra high speed imaging, and the virtual fields method are used to identify the elasto-plastic properties of aluminum.