SPH simulation of boron carbide under shock compression with different failure models

10th International Conference on Aerophysics and Physical Mechanics of Classical and Quantum Systems

物理学;力学

Dyachkov, S.A.^1,2 ; Parshikov, A.N.^1 ; Zhakhovsky, V.V.^1

Dukhov Research Institute of Automatics, ROSATOM, Moscow

127055, Russia^1

Moscow Institute of Physics and Technolgy, Dolgoprudny

141700, Russia^2

关键词: Failure model;    Function of pressure;    Plate impact;    Shock compressions;    SPH simulation;    Velocity profiles;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/815/1/012012/pdf
DOI  :  10.1088/1742-6596/815/1/012012

学科分类：力学，机械学

来源: IOP

【 摘 要 】

Boron carbide behavior under shock compression is analyzed by comparison of SPH simulations with two sets of plate-impact experiments where the used samples were manufactured using different technology. Various boron carbide failure models are applied to determine the relevant mechanical properties which are responsible for the velocity profiles obtained from VISAR measurements. We show that in order to fit the experimental profiles the strength of the failed state of material should be different in those experiments. This strength is demonstrated to be a unique function of pressure irrespective of the utilized failure models.