Title :
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
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;
Conference_Titel :
Future Generation Communication and Networking (FGCN), 2014 8th International Conference on
Conference_Location :
Haikou
Print_ISBN :
978-1-4799-7779-6
DOI :
10.1109/FGCN.2014.43
