YIELD AND SECOND-ORDER EFFECTS INDUCED BY CYCLIC TORSION IN COPPER UNDER TENSION.
Abstract
Evaluation is made of how much recovery processes, yield conditions, and the Poynting or other second-order effects may contribute to the axial creep induced by small amplitude cyclic torsion in copper under tension at room temperature. Results indicate that the significant factors are the yield conditions and the second-order effects, the former contributing most during early cycles and the latter during later. Observations on the yield conditions suggest that the Bauschinger effect has less influence on yield under tension and reversed torsion than might be assumed from classical criteria for yield. Those on the second-order effects show that they can produce suprisingly large axial strain.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1966
- Accession Number
- AD0487680
Entities
People
- W. A. Wood
Organizations
- Columbia University