An Investigation of the Mechanical Properties of Materials at very High Rates of Loading

Kolsky, H.

doi:10.1088/0370-1301/62/11/302

Cited by 2,519 publications

(1,263 citation statements)

References 12 publications

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“…The SHPB technique [19] was implemented to conduct dynamic compression experiments at two strain rates (2.5 × 10 2 s −1 and 10 3 s −1 ). Diametrically opposed foil strain gauges (2 mm, 120 Ω) were bonded to the midpoint of the Hopkinson bars.…”

Section: Bone Compression Experimentsmentioning

confidence: 99%

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Constant strain rate compression of bovine cortical bone on the Split-Hopkinson Pressure Bar

Bekker

Cloete

Chinsamy³

et al. 2015

Materials Science and Engineering: C

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Section: Bone Compression Experimentsmentioning

confidence: 99%

“…The use of the Split-Hopkinson Pressure Bar (SHPB) [19] is a well documented technique for the investigation of the dynamic properties of cortical bone [5,[14][15][16][17]20,21]. Tennyson et al [16] investigated the dynamic characteristics of bovine cortical bone as a function of elapsed post-mortem time.…”

Section: Introductionmentioning

confidence: 99%

Constant strain rate compression of bovine cortical bone on the Split-Hopkinson Pressure Bar

Bekker

Cloete

Chinsamy³

et al. 2015

Materials Science and Engineering: C

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“…A series of quasistatic and dynamic tests of smooth and notched specimens performed at various temperatures was necessary to obtain the JC material constants for this steel. The dynamic tests were carried out by using a Split Hopkinson pressure bar [18]. Following the procedure developed by the authors in [19,20] all the constants were obtained.…”

Section: Materials Modelling Johnson-cook Materials Modelmentioning

confidence: 99%

Numerical Simulation of Tangling in Jet Engine Turbines

Cendón

Erice

Gálvez

et al. 2012

Int. J. Turbo Jet-Engines

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Abstract. The numerical analysis of certain safety related problems presents serious difficulties, since the large number of components present leads to huge finite element models that can only be solved by using large and expensive computers or by making rough approaches to the problem. Tangling, or clashing, in the turbine of a jet engine airplane is an example of such problems. This is caused by the crash and friction between rotor and stator blades in the turbine after an eventual shaft failure. When facing the study of an event through numerical modelling, the accurate simulation of this problem would require the engineer to model all the rotor and stator blades existing in the turbine stage, using a small element size in all pieces. Given that the number of stator and rotor blades is usually around 200, such simulations would require millions of elements. This work presents a new numerical methodology, specifically developed for the accurate modelling of the tangling problem that, depending on the turbine configuration, is able to reduce the number of nodes up to an order of magnitude without losing accuracy. The methodology, which benefits from the cyclic configuration of turbines, is successfully applied to the numerical analysis of a hypothetical tangling event in a turbine, providing valuable data such as the rotating velocity decrease of the turbine, the braking torque and the damage suffered by the blades. The methodology is somewhat general and can be applied to any problem in which damage caused by the interaction between a rotating and static piece is to be analysed.Keywords. Finite element, tangling, clashing, cyclic symmetry. 87.10.Kn, 89.20.Bb, 89.20.Ef, 89.40 PACS ® (2010).

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“…From these three elastic signal the dynamic stress±strain data for the specimen might be derived (see e.g. Kolsky (1949)):…”

Section: Determination Of Dimensionless Materials Constantsmentioning

confidence: 99%

The application of B–P constitutive equations in finite element analysis of high velocity impact

Song

Zhang

Duowang³

2001

International Journal of Solids and Structures

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We present in this paper the application of B±P constitutive equations in ®nite element analysis of high velocity impact. The impact process carries out in so quick time that the heat-conducting can be neglected and meanwhile, the functions of temperature in equations need to be replaced by functions of plastic work. The material constants in the revised equations can be determined by comparison of the one-dimensional calculations with the experiments of Hopkinson bar. It can be seen from the comparison of the calculation with the experiment of a tungsten alloy projectile impacting a three-layer plate that the B±P constitutive equations in that the functions of temperature were replaced by the functions of plastic work can be used to analysis of high velocity impact. Ó

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An Investigation of the Mechanical Properties of Materials at very High Rates of Loading

Cited by 2,519 publications

References 12 publications

Constant strain rate compression of bovine cortical bone on the Split-Hopkinson Pressure Bar

Constant strain rate compression of bovine cortical bone on the Split-Hopkinson Pressure Bar

Numerical Simulation of Tangling in Jet Engine Turbines

The application of B–P constitutive equations in finite element analysis of high velocity impact

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