Accession Number:

AD0766756

Title:

Plastic Waves in a Rate Sensitive Material. Part II. Waves of Combined Stress.

Descriptive Note:

Technical rept.,

Corporate Author:

BROWN UNIV PROVIDENCE R I DEPT OF ENGINEERING

Personal Author(s):

Report Date:

1973-07-01

Pagination or Media Count:

26.0

Abstract:

Experiments are reported in which combined longitudinal and torsional plastic waves are generated in thin-walled tubes of alpha-titanium by subjecting pre-torqued tubes to longitudinal impact. Longitudinal and torsional strain-time profiles are recorded at several stations along the specimen. The experiments show no evidence of an intermediate constant state region furthermore, a final constant state region is not observed even though the latest times of observation are greater than the time at which, according to a strain rate independent theory, a constant strain-rate region is expected. Straightforward generalization of the rate dependent theory of Part I AD-766 755 to allow for combined stress states leads to a theory which predicts the observed strain-time profiles with good accuracy. Author

Subject Categories:

  • Metallurgy and Metallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE