The impact of a shock wave on a movable wall

Meyer, R.

doi:10.1017/s0022112057000683

Cited by 19 publications

(17 citation statements)

References 3 publications

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“…Also for peak reflected pressures above 5000 kPa, the ideal gas laws and assumptions made in Meyer [4] used to compute the coupling begin to lose validity. The true magnitudes of differences in the lines at higher peak pressures may be somewhat larger but in absence of a more robust model, the author felt it was important to include these ranges of computations to show the general shape of the curves and how they deviate from one another.…”

Section: Analysis and Discussion Of Differences In Coupled And Uncoupmentioning

confidence: 99%

“…A quick-running 1-D model using equations in Meyer [4] to couple the blast loading was formulated. The results were compared to results from a fully coupled commercial CFD/CSM code and appear to be in reasonable agreement.…”

Section: Discussionmentioning

confidence: 99%

“…The bulk modulus and Poisson's ratio were assumed as 247.6 MPa and 0.3, respectively, to amount to a uniaxial confined effective modulus of 400 MPa. A simple 1-D numerical model, shown in Figure 4, was formulated using onedimensional finite elements and equations from Meyer [4] to couple the reflected blast loading.…”

Section: Validation Of a One-dimensional Simple Coupled Model With A mentioning

confidence: 99%

“…Shock tube experiments by Murray et al [3] have been conducted to investigate velocity profiles and shock trajectories attained from a blast wave impacting rigid movable wall. In this study, the accuracy of an analytical solution by Meyer [4] computing the velocity-time history of a rigid movable wall impacted by a shock wave was investigated and found to be in good agreement for weak shock waves, but underestimated reflected loading for strong shock waves. Impulse reduction coefficients have also been investigated by Szuladzinski [5] who studied the effect of varying geometries and mass densities of cross sections on transferred velocity from impulsive blast loading using a commercial coupled CFD/CSM code.…”

Section: Introductionmentioning

confidence: 99%

“…A simple 1-D finite element model is formulated representing a core of soil through the wall thickness using equations from Meyer [4] to couple the blast loading. An equivalent 1-D model is constructed using a commercial coupled CFD/CSM code.…”

Section: Introductionmentioning

confidence: 99%

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Effect of silty-sand compressibility on transferred velocity from impulsive blast loading

Scherbatiuk¹,

Pope²,

Fowler³

et al. 2006

WIT Transactions on the Built Environment, Vol 87

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A common assumption made in calculating response of walls subjected to blast loading is that the reflected blast loading is often based on rigid body dynamics along the thickness of walls and zero particle velocity at the fluid-structure interface. Of interest to the authors is the development of a quick-running impulse-dominated structural response model for soil-filled concertainer walls that assumes reflected impulse assuming zero particle velocity during the course of loading. The magnitude of response will directly depend on the velocity transferred in the thickness direction by the blast loading. The aim of this study is to assess whether a reduction factor should be applied to reduce the initial velocity corresponding to the zero-particle-velocity reflected impulse for concertainer walls filled with compressible silty-sand. Results obtained from a 1-D numerical program using a simple analytical coupling model are validated with those obtained from a commercial coupled Computation Fluid Dynamics and Computational Solid Mechanics (CFD/CSM) code. Both coupled and uncoupled loading combinations are investigated for rigid body, elastic, and compressible silty-sand material behaviours using the simple 1-D numerical program developed and validated. Graphical results for a range of peak blast pressures are compiled to present the differences in zero-particle-velocity reflected impulse required to attain the same velocity in the thickness direction for each different combination. The resulting differences in charge standoffs between each combination are compared as well for a number of different charge sizes. For this specific problem of calculating transferred velocity in the thickness direction for a silty-sand filled concertainer wall subjected to impulsive blast loading, results that include coupling only lead to a small difference in the resulting charge standoff and therefore reasonable results will be achieved assuming uncoupled loading and rigid body dynamics.

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Section: Analysis and Discussion Of Differences In Coupled And Uncoupmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Validation Of a One-dimensional Simple Coupled Model With A mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations