Simulation and Modeling Investigation into Catastrophic Front-Side Bursting under Hypervelocity Impact on Pressure Vessels

Author

Gai Fangfang ; Liu Xun ; Qiao Mu

Author_Institution

Coll. of Sci., Heilongjiang Inst. of Sci. & Technol., Harbin, China

fYear

2014

fDate

20-23 Dec. 2014

Firstpage

146

Lastpage

149

Abstract

Lagrange methods in AUTODYN-2D is used for investigate the relationships between impact hole size, crack size. According to characteristics of impact hole, Simply model of the impact hole is built. The model is presented by postulates the existence of two-radial cracks that emanate at the boundary of a circular hole. The relationships of impact hole size, crack size, gas pressure and the stress intensity factor which is determined by simplified linear elastic fracture mechanics are obtained. The damage process of the front wall is analyzed. The prediction model for damage and failure of front wall is built. The critical stress value is obtained.

Keywords

crack-edge stress field analysis; elasticity; fracture mechanics; impact (mechanical); pressure vessels; AUTODYN-2D; Lagrange method; catastrophic front-side bursting; circular hole; crack size; critical stress value; damage prediction model; damage process; failure prediction model; gas pressure; hypervelocity impact; impact hole size; pressure vessels; simplified linear elastic fracture mechanics; stress intensity factor; two-radial cracks; Analytical models; Educational institutions; Load modeling; Numerical models; Numerical simulation; Predictive models; Stress; fracture mechanics; hypervelocity impact; impact hole; numerical simulation; pressure vessels;

fLanguage

English

Publisher

ieee

Conference_Titel

Future Generation Communication and Networking (FGCN), 2014 8th International Conference on

Conference_Location

Haikou

Print_ISBN

978-1-4799-7779-6

Type

conf

DOI

10.1109/FGCN.2014.43

Filename

7024365