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Three-dimensional Fracture Analysis of Defected Tubes under Detonation | ||
| Journal of Stress Analysis | ||
| دوره 5، شماره 1، آذر 2020، صفحه 99-106 اصل مقاله (7.49 M) | ||
| نوع مقاله: Original Research Paper | ||
| شناسه دیجیتال (DOI): 10.22084/jrstan.2020.22345.1154 | ||
| نویسنده | ||
| H. Eskandari* | ||
| Abadan Institute of Technology, Petroleum University of Technology, Abadan, Iran. | ||
| چکیده | ||
| The main purpose of this article is three-dimensional finite element analysis of defected tubes under gas detonation loading. The variation of stress intensity factor through the semi elliptical crack front for different defect profiles versus the simulation time is studied. The structural linear elastic response of tube in presence of an embedded defect is considered. The results show that the traveling pressure loads can affect the distribution of fracture factors along the defect shape. It can be seen that the moving pressure loads lead to occur the mixed mode stress intensity factor in thick walled tubes. The dependency of the stress intensity factors on the crack configuration, time period of loading and typical pressure-time profile is investigated. It can be seen that the schematic of stress/strain-time trace profiles strongly dependents on the location of points through the wall thickness. The capability of finite element modeling in analysis of three dimensional dynamic transient problems has been shown. | ||
| کلیدواژهها | ||
| Finite element simulation؛ Structural fracture analysis؛ Detonation loading؛ Thick walled cylinder | ||
| مراجع | ||
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[1] T.W. Chao, Gaseous Detonation-Driven Fracture of Tubes, Ph.D. Dissertation, California Institute of Technology; Pasadena, California, (2004). [2] M. Malekan, F.B. Barros, E. Sheibani, Thermo mechanical analysis of a cylindrical tube under internal shock loading using numerical solution, J. Braz. Soc. Mech. Sci. Eng., 38(8) (2016) 2635-2649. [3] H. Eskandari, Three-dimensional investigation of cracked tubes coated with functionally graded material under shock loading, J. Braz. Soc. Mech. Sci. Eng., 40 (2016) 432. [4] W.M. Beltman, J.E. Shepherd, Linear elastic response of tubes to internal detonation loading, J. Sound. Vib., 252(4) (2002) 617-655. [5] M. Mirzaei, M. Malekan, E. Sheibani, Failure analysis and finite element simulation of deformation and fracture of an exploded CNG fuel tank, Eng. Fail. Anal., 30 (2013) 91-98. [6] M. Mirzaei, H. Biglari, M. Salavatian, Analytical and numerical modeling of the transient elastodynamic response of a cylindrical tube to internal detonation loading, Int. J. Press. Vessels Pip., 83(7) (2006) 531-539. [7] J. Zhou, Z. Deng, T. Liu, X. Hou, Elastic structural response of prismatic metal sandwich tubes to internal moving pressure loading, Int. J. Solids Struct., 46(11-12) (2009) 2354-2371. [8] J. Zhou, Z. Deng, T. Liu, X. Hou, Optimal design of metallic sandwich tubes with prismatic cores to internal moving shock load, Struct. Multidiscipl. Optim., 41 (2010) 133-150. [9] W.M. Beltman, J.E. Shepherd, The structural response of tubes to detonation and shock loading, Parts I and II, Technical Report FM98-3, California Institute of Technology, Pasadena, CA, (1998). [10] M. Mirzaei, On amplification of stress waves in cylindrical tubes under internal dynamic pressures, Int. J. Mech. Sci., 50(8) (2008) 1292-1303. | ||
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