Dynamic Constitutive and Failure Characterization of Rate Sensitive Alloys
Abstract
The objectives of this research program are (1) to establish critical conditions for initiation and growth of adiabatic shear bands in pre-notched plates subjected to asymmetric impact loading and (2) investigate the transition between competing failure modes under varying loading conditions. Typically, failure under asymmetric loading may occur by either dynamic cracking or adiabatic shear banding, both of which may be observed in the same specimen or structure depending on the instantaneous local stresses. In this stage of the research program, specimens of a high strength maraging steel, C300 were studied in two different geometries consisting of either a single pre-notch or two parallel notches. The investigation of different specimen geometries was motivated by discrepancies reported in the literature regarding failure mode selection in maraging steels.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 20, 2000
- Accession Number
- ADA384191
Entities
People
- Ares J. Rosakis
- G. Ravichandran
Organizations
- California Institute of Technology