| Autor: |
Petrovtsev, A. V., Zhugin, Yu. N., Kovalenko, G. V. |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2004, Vol. 706 Issue 1, p255-258, 4p |
| Abstrakt: |
A model of dynamic behaviour of quartzite under loading and release is developed, which describes polymorphic transformations and strength properties of this matereal. The model is based on recently obtained data of static, laboratory and large-scale dynamic experiments. Main peculiarities of dynamic processes in quartzite are taken into account. They are related to considerable non-equilibrium of polymorphic transformations under loading characterized by large deviation of transformation beginning from equilibrium curve and large length of transformation area; large hysteresis of transformation under loading and release; kinetic nature of transformation. Appropriate quantitative characteristics of transformations are estimated on adiabatic curves of loading and release. Relaxation times of transformations are estimated as well. Conclusions are drawn on the value of residual shear strength. Simulation results are presented for a series of shock experiments used to calibrate the model. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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