Inelastic Deformation of Metals Under Dynamic Loading.
Abstract
The research is a study of the plastic response of metals to the application of dynamic loads. The study can be divided conveniently into two parts: (a) experiments on short specimens in which the state of stress is essentially homogeneous and (b) wave propagation investigations. A split-Hopkinson bar for bi-axial loading of short specimens (torsion and compression) at equivalent strain rates of about 400 or 500/sec was developed. The influence of annealing temperature on strain rate effects in copper was studied. Experiments were performed on thin-walled tubes of alpha-titanium in which pre-torqued tubes are subjected to an axial imapct. The results of these experiments cannot be explained satisfactorily using a strain rate independent theory. It was found necessary to develop a strain rate dependent theory which then predicted the actual material behavior with good accuracy. (Modified author abstract)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 31, 1973
- Accession Number
- AD0765522
Entities
People
- Jacques W. Duffy
- Rodney J. Clifton
Organizations
- Brown University