About the state of two—metal contact boundary at a high—velocity oblique impact

✍ Scribed by Oleg B. Drennov

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 667 KB
• Volume: 23
• Category: Article
• ISSN: 0734-743X
• DOI: 10.1016/s0734-743x(99)00073-1

✦ Synopsis

The character of disturbance development on a contact boundary of metal layers at a constant impact angle, y, but at a varying velocity vc of a contact point was investigated. Velocity vc growth in a subsonic regime leads to a loading pressure and elastic shear deformation intensity increase. Disturbance amplitude grows. At critical velocity v~ values for individual metal pair, characterizing a transition from subsonic to supersonic flux, a disturbance amplitude reaches maximum. A further velocity vc growth is accompanied by disturbance amplitude decrease. In this oblique impact regime the disturbance are formed under Kelvin -Helmholtz instability development.

An analytical relation for disturbance amplitude on contact boundaries of different metal pairs and their strength properties (dynamic strength yield) was proposed.