Simulation of phase transitions and strength evolution in quartzite in shock experiments Mikhail Kovalenko, Denis Shalkovsky, Aleksandr Petrovtsev, Aleksandr Pavlenko, Svetlana Malyugina and Dmitriy Yusupov EPJ Web Conf., 250 (2021) 02030 Published online: 09 September 2021 DOI: 10.1051/epjconf/202125002030