Transactions of the Korean Society of Mechanical Engineers (대한기계학회논문집)
- Volume 19 Issue 4
- /
- Pages.1041-1050
- /
- 1995
- /
- 1225-5963(pISSN)
DOI QR Code
Determination of Dynamic Yield Stress of Copper Alloys Using Rod Impact Test
봉충격시험에 의한 동합금의 동적 항복응력 결정
Abstract
The deformed shape of rod specimen of copper alloys was measured after the high-velocity impact against a rigid anvil and analyzed with one-dimensional theory to determine dynamic yield stress and strain-rate sensitivity which is defined as the ratio of dynamic yield stress to static flow stress. The evvect of two-dimensional deformation on the determination of dynamic yield stress by the one-dimensional theory, was investigated through comparison with the analysis by hydrocode. It showed that the one-dimensional theory is relatively consistent with two-dimensional hydrocode in spite of its simplicity in analysis.