摘要
Much effort has been dedicated to the study of underground explosions because they pose a major threat to people and structures below or above the ground.In this regard,it is especially important to model the propagation of blast waves in soil and their effects on structures.The main phenomena caused by underground explosive detonation that must be addressed are crater or camouflet formation,shock wave and elastic–plastic wave propagation in soil,and soil-structure interaction.These phenomena can be numerically simulated using hydrocodes,but much care must be taken to obtain reliable results.The objective of this study is to analyze the ability of a hydrocode and simple soil models that do not require much calibration to approximately reproduce experimental and empirical results related to different buried blast events and to provide general guidelines for the simulation of this type of phenomena.In this regard,crater formation,soil ejecta,blast wave propagation in soil,and their effects on structures below and above the ground are numerically simulated using different soil models and parameters;the results are analyzed.The properties of soil have a significant effect on structures,the ejecta,and the propagation of shock waves in soil.Thus,the model of the soil to study these phenomena must be carefully selected.However their effect on the diameter of a crater is insignificant.
基金
The authors wish to thank the help received from Amelia Campos for the English revision.The financial support of the CONICET(Argentina)and National Universities of Cuyo and Tucuman is gratefully acknowledged.Special acknowledgements are extended to the reviewers of the first version of the paper because their useful suggestions led to improvements of the work.
