The limits of strength in materials in the condensed phase

18th APS-SCCM; 24th AIRAPT

Bourne, N.K.^1

Centre for Matter under Extreme Conditions, University of Manchester, Rutherford Appleton Laboratory, Oxfordshire

OX11 0FA, United Kingdom^1

关键词: Condensed phase;    Condensed-phase matter;    Inelastic deformation;    Point compression;    Shock dynamics;    Solid mechanics;    Theoretical strength;    Warm dense matters;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/500/11/112010/pdf
DOI  :  10.1088/1742-6596/500/11/112010

来源: IOP

【 摘 要 】

There is a range of thresholds in loading for the response of condensed phase matter, starting with inelastic deformation at the yield stress. Beyond this point compression continues until the material bond strength is overcome and becomes so-called warm dense matter. In this regime formulations of solid mechanics derived in the ambient state no longer apply. Between these two limits lies a boundary that differentiates weak- from strong-shock dynamic loading. This work examines these thresholds and shows a correlation between the theoretical strength of the material and this weak shock limit for a range of metals.