Detonation-driven fracture in thin shell structures: Numerical studies

Gato, C.

doi:10.1016/j.apm.2010.02.011

Cited by 22 publications

(7 citation statements)

References 44 publications

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“…23,24 Unfortunately, the majority of the reported FE simulations of detonation-driven fracture of cylindrical tubes lack the previously mentioned critical considerations. [18][19][20][21][22] Moreover, the recent FE simulations of detonationdriven fracture of steel pipes and the experimental studies of the fracture surfaces 25 clearly showed the cyclic nature of the crack propagation in Mode I and confirmed that major parts of cracking process and fragmentation can occur after the passage of detonation front. These analyses included fluid-structure interaction effects, and the fracture simulations were performed by using a failure strain-based element deletion process.…”

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confidence: 69%

“…Nevertheless, researchers carried out FE studies to simulate these experiments, mainly with the aim of validation of their numerical codes and procedures. [17][18][19][20][21][22] On the other hand, the characterization of special markings that were found on the fracture surfaces of an exploded steel cylinder indicated that a significant portion of the crack propagation can be a cyclic growth by the detonation-induced flexural waves. 23,24 Unfortunately, the majority of the reported FE simulations of detonation-driven fracture of cylindrical tubes lack the previously mentioned critical considerations.…”

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confidence: 99%

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On the role of stress waves in dynamic rupture of cylindrical tubes

Mirzaei

Tavakoli

Najafi

2017

Fatigue Fract Eng Mat Struct

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A systematic experimental/computational study was performed to investigate the role of stress waves in ductile fracture of cylindrical tubes. The stress waves were created by high‐speed moving load, which was produced by detonation of explosive cord inside two intact and two pre‐flawed steel tubes. Several distinct phenomena like cyclic crack growths in Modes I and III, crack flap bulging and crack curving/branching were observed and simulated by finite element (FE) method. The FE models were composed of 3D brick elements equipped with interface cohesive elements. The analysis results showed that the crack growths in Modes I and III were governed by the detonation‐induced stress waves. The crack speeds were obtained based on the increments of cyclic crack growth and the time period of the stress waves. The estimated crack speed range was 63–230 m s−1 for the axial growth, whereas the average speed for growth in Mode III was 100 m s−1.

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confidence: 69%

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confidence: 99%

On the role of stress waves in dynamic rupture of cylindrical tubes

Mirzaei

Tavakoli

Najafi

2017

Fatigue Fract Eng Mat Struct

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“…Besides the extended finite element method, the meshfree method also provided some excellent results like the work of Rabczuk et al [14] in 2007. Recently, Gato numerically simulated detonation-driven fracture in pipes with meshfree method [15].…”

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confidence: 99%

A novel enriched CB shell element method for simulating arbitrary crack growth in pipes

Zhuang

Cheng

2011

Sci. China Phys. Mech. Astron.

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In this work, a novel numerical method is developed for simulating arbitrary crack growth in pipes with the idea of enriched shape functions which can represent the discontinuity independent of the mesh. The concept of the enriched shape functions is introduced into the continuum-based (CB) shell element. Due to the advantage of CB shell element, the shell thickness variation and surface connection can be concerned during the deformation. The stress intensity factors of the crack in the CB shell element are calculated by using the 'equivalent domain integral' method for 3D arbitrary non-planar crack. The maximum energy release rate is used as a propagation criterion. This method is proved able to capture arbitrary crack growth path in pipes which is independent of the element mesh. Numerical examples of different fracture patterns in pipes are presented here.CB shell element, enriched shape functions, extended finite element, 3D arbitrary crack propagation, energy release rate PACS: 02.70.Oh, 46.50.+a

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“…They used the shell formulation based on the Kirchhoff-Love (KL) theory to study the fluid-filled cylinder that is impacted by a penetrating projectile. The crack growth in thin structures is studied using a 3D continuum meshfree method by Gato [2]. The three-dimensional approach was presented based on shell dynamic theory in thin cylinder, which can be developed for thick structures and full 3D continua.…”

Section: Introductionmentioning

confidence: 99%

Transient analysis of thermo-elastic waves in thick hollow cylinders using a stochastic hybrid numerical method, considering Gaussian mechanical properties

Hosseini

Shahabian

2011

Applied Mathematical Modelling

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a b s t r a c tThis article attempts to study the stochastic coupled thermo-elasticity of thick hollow cylinders subjected to thermal shock loading considering uncertainty in mechanical properties. The thermo-elastic governing equations based on Green-Naghdi theory (without energy dissipation) are stochastically solved using a hybrid numerical method (combined Galerkin finite element and Newmark finite difference methods). The mechanical properties are considered as random variables with Gaussian distribution, which are generated using Monte Carlo simulation method with various coefficients of variations (COVs). The effects of uncertainty in mechanical properties with various coefficients of variations on thermo-elastic wave propagation are studied in detail. Also, the maximum, mean and variance of temperature, displacement and stresses are illustrated across thickness of cylinder in various times.

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Detonation-driven fracture in thin shell structures: Numerical studies

Cited by 22 publications

References 44 publications

On the role of stress waves in dynamic rupture of cylindrical tubes

On the role of stress waves in dynamic rupture of cylindrical tubes

A novel enriched CB shell element method for simulating arbitrary crack growth in pipes

Transient analysis of thermo-elastic waves in thick hollow cylinders using a stochastic hybrid numerical method, considering Gaussian mechanical properties

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