Title :
Simulation Analysis for Peak Pressure of Shock Wave Based on Lax-Friedrichs Method
Author :
Ye, Shijie ; Guo, Yanping ; Li, Jianliang ; Lu, Ming
Author_Institution :
Sch. of Sci., Nanjing Univ. of Sci. & Technol., Nanjing, China
Abstract :
FEM software has been well-developed in shock wave simulation. As the software usually is huge and complicated, subdivision mesh needs lots of computation, and the precision is not assured, finite-difference methods are highly regarded. Difference schemes are related to the stability and precision. In this paper, a Lax-Friedrichs based difference method is presented. Different grids were discussed and the numerical results were compared with Henrych empirical formula. Furthermore, comparing the data from numerical simulation of TNT explosive and the data from DYNA software, we concluded finite-difference methods have advantage of FEM methods.
Keywords :
explosives; finite difference methods; mechanical engineering computing; mesh generation; shock waves; DYNA software; FEM software; Henrych empirical formula; Lax-Friedrichs based difference method; TNT explosive; difference scheme; finite element method; finite-difference method; peak pressure; shock wave simulation; simulation analysis; subdivision mesh; Equations; Explosives; Finite difference methods; Finite element methods; Mathematical model; Shock waves; Finite-Difference method; Lax-Friedrichs; numerical simulation; overpressure; shock waves;
Conference_Titel :
Information and Computing Science (ICIC), 2012 Fifth International Conference on
Conference_Location :
Liverpool
Print_ISBN :
978-1-4673-1985-0
DOI :
10.1109/ICIC.2012.48
