Response of a Cylindrical Shell to Internal Blast Loading

Malherbe, Magali; Wing, R.; Laderman, A. J.; Oppenheim, A. K.

doi:10.1243/jmes_jour_1966_008_012_02

Cited by 29 publications

(12 citation statements)

References 5 publications

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“…The simplest dynamical model describes the radial (breathing) motion of the tube cross-section. De Malherbe et al [5] compared the results of this model to experimental values for detonation loading. Shepherd [6] used the crosssectional model to predict the response of a tube to internal detonation loading.…”

Section: Structural Responsementioning

confidence: 99%

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Linear Elastic Response of Tubes to Internal Detonation Loading

Beltman

Shepherd

2002

Journal of Sound and Vibration

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This paper deals with the structural response of a tube to an internal gaseous detonation. An internal detonation produces a pressure load that propagates down the tube. Because the speed of the gaseous detonation can be comparable to the flexural wave group speed, excitation of flexural waves in the tube wall must be considered. Flexural waves can result in much higher strains and stresses than static loading with the same loading pressures. Experiments and numerical simulations were used to determine the structural response. In the experiments, a detonation tube was instrumented with a number of strain gages. A series of experiments was carried out under different conditions. Strains were measured that exceeded the equivalent static strain by up to a factor of 3Á9: Special attention was paid to the influence of the detonation speed, reflection and interference of structural waves at flanges and also at the tube end, the linearity of the response, the transient development of the deflection profile, and the influence of detonation cell size. Analytical models and finite element models were used to interpret the observations and to make quantitative predictions of the peak strain. #

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Section: Structural Responsementioning

confidence: 99%

“…Calculations were carried out for a clamped tube (see Figure 4) and a simply supported tube (see Figure 5), where R in is the internal radius of the tube. 5. EXPERIMENTAL SET-UP…”

Section: Finite Element Simulationsmentioning

confidence: 99%

Linear Elastic Response of Tubes to Internal Detonation Loading

Beltman

Shepherd

2002

Journal of Sound and Vibration

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“…There are also recent computational efforts such as the one by Zhuang and O'Donoghue (2000) to simulate the fluid-structure-fracture interaction of a bursting pipe under initially static loading. The structural response of shells to shock or detonation loading was studied by researchers such as Tang (1965), Reismann (1965), de Malherbe et al (1966, Brossard and Renard (1979), Simkins (1987), and Thomas (2002), but these were done on tubes that did not have deliberate flaws and, thus, did not involve a fracture mechanics approach. The current study provides experimental data that connect fracture mechanics and cylindrical shell dynamics.…”

Section: Introductionmentioning

confidence: 99%

Fracture response of externally flawed aluminum cylindrical shells under internal gaseous detonation loading

Chao

Shepherd

2005

Int J Fract

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International Journal of Fracture (2005) 134:59-90Abstract. Experiments were performed to observe the fracture behavior of thin-wall and initiallyflawed aluminum tubes to internal gaseous detonation loading. The load can be characterized as a propagating pressure jump with speed of 2.4 km/s and magnitude ranging from 2 MPa to 6 MPa, followed by an expansion wave. Flaws were machined as external axial surface notches. Cracks ran both in the upstream and downstream directions as the hoop stress opened up the notch. Different kinds of crack propagation behavior were observed for various loading amplitudes and flaw sizes. For low-amplitude loading and short flaws, cracks tend to run in a helical fashion, whereas for highamplitude loading and long flaws, cracks tend to bifurcate in addition to running helically. Unless the cracks branched and traveled far enough to meet, resulting in a split tube, they were always arrested. Strain gages were used to monitor the hoop strains at several places on the tubes' external surface. Far from the notch, tensile vibrations were measured with frequencies matching those predicted by the steady-state Tang (1965, Proceedings of the American Society of Civil Engineers 5, 97-122) and Simkins (1987, Technical Report ARCCB-TB-87008, US Army Armament Research, Development and Engineering Center, Watervliet, N.Y. 12189-4050) models. Near the notch, compressive strains were recorded as a result of the bulging at the notch. Features in the strain signals corresponding to different fracture events are analyzed.

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“…There have been several investigations dealing with the structural response of shells to internal shock or detonation loading [2][3][4][5][6][7][8][9][10], a brief review of those can be found in [1].…”

Section: Introductionmentioning

confidence: 99%