Reactive fragment enhances lethality by incorporating the defeat mechanisms of kinetic energy and chemical energy into a unitary damage unit. Combined studies on the behavior of reactive fragment initiating covered ex...Reactive fragment enhances lethality by incorporating the defeat mechanisms of kinetic energy and chemical energy into a unitary damage unit. Combined studies on the behavior of reactive fragment initiating covered explosive are performed theoretically and experimentally. The results in- dicate that the response of the covered explosive subjected to reactive fragment is not consistent with the classical shock initiation model. When impacting and penetrating into the covered explosive, the reactive fragment releases great amounts of thermo-chemical energy up to 5. 68 times of its kinetic energy into the explosive due to violent chemical reactions. This impact-induced chemical energy re- lease behavior of the reactive fragment significantly enhances the initiation capability and damage effects on the covered explosive.展开更多
Subject Code:D02With the support by the National Natural Science Foundation of China and the Thousand Talent Program for Young Outstanding Scientists,a research team led by Prof.Shen Bing(沈冰)at the School of Earth a...Subject Code:D02With the support by the National Natural Science Foundation of China and the Thousand Talent Program for Young Outstanding Scientists,a research team led by Prof.Shen Bing(沈冰)at the School of Earth and Space Sciences of Peking University,uncovered chemical weathering during the termination of Marinoan Snowball Earth.This study was published in PNAS(2016,113:14904—14909).展开更多
基金Supported by the National Innovation Funds(7130619)
文摘Reactive fragment enhances lethality by incorporating the defeat mechanisms of kinetic energy and chemical energy into a unitary damage unit. Combined studies on the behavior of reactive fragment initiating covered explosive are performed theoretically and experimentally. The results in- dicate that the response of the covered explosive subjected to reactive fragment is not consistent with the classical shock initiation model. When impacting and penetrating into the covered explosive, the reactive fragment releases great amounts of thermo-chemical energy up to 5. 68 times of its kinetic energy into the explosive due to violent chemical reactions. This impact-induced chemical energy re- lease behavior of the reactive fragment significantly enhances the initiation capability and damage effects on the covered explosive.
文摘Subject Code:D02With the support by the National Natural Science Foundation of China and the Thousand Talent Program for Young Outstanding Scientists,a research team led by Prof.Shen Bing(沈冰)at the School of Earth and Space Sciences of Peking University,uncovered chemical weathering during the termination of Marinoan Snowball Earth.This study was published in PNAS(2016,113:14904—14909).
