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

fYear

2012

fDate

24-25 July 2012

Firstpage

67

Lastpage

70

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Information and Computing Science (ICIC), 2012 Fifth International Conference on

Conference_Location

Liverpool

ISSN

2160-7443

Print_ISBN

978-1-4673-1985-0

Type

conf

DOI

10.1109/ICIC.2012.48

Filename

6258073