Abstract and subjects
This paper discusses a collaborative research program aimed at the development of improved constitutive modeling capability, in particular, the development of a model validated over a wide range of strain rates (from quasistatic to 10(6) s(-1)). This program includes experimental, theoretical, and numerical components. The experimental part of the program includes both planar and cylindrical manifestations of the perturbation growth method. The theoretical part of the program is focused on the development of a model that considers all the necessary physical aspects and, at the same time, is compatible with standard numerical methods for solving the governing field equations. The numerical part of the program is focused on model implementation (in an appropriate continuum mechanics code) and validation. All three parts of the program are coupled. This paper will discuss the experimental program, the development of a new model, and show some results comparing various model predictions to experimental data.