Analysis of the Surface Cracks of Long Range Storage Solid Motor Grain

Abstract:

Article Preview

The surface cracks are easy to occur in the solid missile motor grain. The solid missile motor grain with cracks is very dangerous when it is lunched, because the surface cracks might be propagation unstable when the internal pressure enters the surface cracks cavity. In order to analyze the surface crack of solid motor grain, with accelerated aging test, the variation law of mechanics properties of propellant in the storage period is obtained. Under internal pressure and axial acceleration loading, the three-dimension finite element models of the motor grain are established, three-dimension singular crack elements at the tips of surface cracks are established to simulate the cracks propagation. Along with the surface crack propagation, the stress intensity factors of the crack tips in different storage period are calculated to prejudge its stability respectively. The method and conclusions are available for using solid missile motor grain with surface cracks.

Info:

Periodical:

Key Engineering Materials (Volumes 324-325)

Edited by:

M.H. Aliabadi, Qingfen Li, Li Li and F.-G. Buchholz

Pages:

93-96

DOI:

10.4028/www.scientific.net/KEM.324-325.93

Citation:

D. C. Yuan et al., "Analysis of the Surface Cracks of Long Range Storage Solid Motor Grain", Key Engineering Materials, Vols. 324-325, pp. 93-96, 2006

Online since:

November 2006

Export:

Price:

$35.00

[1] MENG Shangyang, TANG Guojin, LEI Yongjun. Stability analysis of the crack in solid rocket motor grain. Journal of Propulsion Technology, 2002, 23(4): 335-338 (in Chinese).

[2] MENG Shangyang, TANG Guojin, LEI Yongjun. Stability analysis of the interfacial crack between propellant and liner of solid rocket motor grain[J]. Journal of Solid Rocket Technology, 2004, 27(1) : 46-49 (in Chinese).

[3] YUAN Duan-cai, TANG Guojin, MENG Shangyang, LEI Yongjun. The treatment of the surface crack of solid missile motor grain[J]. Journal of Solid Rocket Technology, 2005, 28(4) : 260-283 (in Chinese).

[4] �D. M. Tracey and T. S. Cook, Analysis of power type singularities using finite elements[J], International Journal for Numerical Methods in Engineering, 1977, Vol. 11: 1225-1233. �.

DOI: 10.1002/nme.1620110804

[5] Stephane S. Pageau, Paul F. Joseph and Sherrill B. Biggers JR. A finite element analysis of the singular stress fields in anisotropic materials loaded in antiplane shear[J]. International Journal for Numerical Methods in Engineering, 1995, Vol. 38: 81-97.

DOI: 10.1002/nme.1620380106

[6] �Stephane S. Pageau, Paul F. Joseph and Sherrill B. Biggers JR. Finite element evaluation of free-edge singular stress fields in anisotropic materials[J]. International Journal for Numerical Methods in Engineering, 1995, Vol. 38: 2225-2239. �.

DOI: 10.1002/nme.1620381306

[7] Thomas J. R. Hughes and J. E. Akin, Techniques for Developing Special Finite Shape Function with Particular Reference to Singularities [J], International Journal for Numerical Methods in Engineering, 1980, Vol. 15: 733-751.

DOI: 10.1002/nme.1620150509

In order to see related information, you need to Login.