Relevant bibliographies by topics / Blast Loaded Plates

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Blast Loaded Plates'

Author: Grafiati
Published: 6 September 2023

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Journal articles on the topic "Blast Loaded Plates"

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Rajendran, R., and J. M. Lee. "Blast loaded plates." Marine Structures 22, no. 2 (April 2009): 99–127. http://dx.doi.org/10.1016/j.marstruc.2008.04.001.

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Zhou, Hongyuan, Pengli Cong, Xiaojuan Wang, Tianyi Song, and Xin Huang. "A Dimensionless Number for Response of Blast Loaded Steel Plates." International Journal of Structural Stability and Dynamics 21, no. 05 (March 8, 2021): 2150072. http://dx.doi.org/10.1142/s0219455421500723.

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The response of monolithic steel plates subjected to blast was extensively studied, and dozens of dimensionless numbers were proposed to predict the response. While the existing dimensionless numbers are not convenient to use in some scenarios with relatively complicated conditions, the dimensionless number proposed for blast loaded steel plates based on dimensional analysis extends the range of application. Different from other dimensionless numbers, the properties of medium with which the blast load transmits are incorporated to extend the application range to more general scenarios. The responses of the plate subjected to both near-field blast with non-uniform load and far-field blast with uniform load, i.e. both the external and internal blasts (for steel boxes), are reasonably predicted. The physical implication of the proposed dimensionless number is clear in that the media properties, geometrical features, characteristics of material, and loading are incorporated, which are readily available in test. A variety of test data are used to validate the applicability and versatility of the proposed dimensionless number.
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Shuaib, Mujtaba M., Steeve Chung Kim Yuen, and Gerald N. Nurick. "Numerical Simulation of Blast Loaded CFRP Retrofitted Steel Plates." MATEC Web of Conferences 347 (2021): 00038. http://dx.doi.org/10.1051/matecconf/202134700038.

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This paper reports on the results of a numerical study to simulate the response of carbon fibre reinforced polymer (CFRP) retrofitted steel plates to applied blast loads using finite element software, LS-DYNA. The results of the simulation were validated against plate response and magnitude of deformation obtained from previous experiments. The uniform blast load was generated in the experiment by detonating a cylindrical charge down the end of a square tube. The finite element code LS-DYNA was used to simulate the structural response of the respective blast structures. For the numerical model, the blast load was simulated using the mapping feature available in LS-DYNA for the multi-material arbitrary Lagrangian-Eulerian (MM-ALE) elements which significantly reduced the size of the air domain in the model. The simulations showed a satisfactory correlation with the experiments for the blast results and post-failure deformations that occurred in CFRP retrofitted steel plates.
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Jiang, J., and M. D. Olson. "Iso-response Analysis of Blast Loaded Stiffened Plates." Computer-Aided Civil and Infrastructure Engineering 8, no. 3 (November 6, 2008): 247–55. http://dx.doi.org/10.1111/j.1467-8667.1993.tb00209.x.

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Rudrapatna, N. S., R. Vaziri, and M. D. Olson. "Deformation and failure of blast-loaded square plates." International Journal of Impact Engineering 22, no. 4 (April 1999): 449–67. http://dx.doi.org/10.1016/s0734-743x(98)00046-3.

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Rudrapatna, N. S., R. Vaziri, and M. D. Olson. "Deformation and failure of blast-loaded stiffened plates." International Journal of Impact Engineering 24, no. 5 (May 2000): 457–74. http://dx.doi.org/10.1016/s0734-743x(99)00172-4.

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Mohammadzadeh, Behzad, Junsuk Kang, and Seokbeen Im. "Blast loaded plates: Simplified analytical nonlinear dynamic approach." Structures 28 (December 2020): 2034–46. http://dx.doi.org/10.1016/j.istruc.2020.10.043.

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Nurick, G. N., M. E. Gelman, and N. S. Marshall. "Tearing of blast loaded plates with clamped boundary conditions." International Journal of Impact Engineering 18, no. 7-8 (October 1996): 803–27. http://dx.doi.org/10.1016/s0734-743x(96)00026-7.

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Nurick, G. N., M. D. Olson, J. R. Fagnan, and A. Levin. "Deformation and tearing of blast-loaded stiffened square plates." International Journal of Impact Engineering 16, no. 2 (April 1995): 273–91. http://dx.doi.org/10.1016/0734-743x(94)00046-y.

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Jiang, J., and M. D. Olson. "Rigid-plastic analysis of underwater blast loaded stiffened plates." International Journal of Mechanical Sciences 37, no. 8 (August 1995): 843–59. http://dx.doi.org/10.1016/0020-7403(94)00100-x.

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Dissertations / Theses on the topic "Blast Loaded Plates"

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Yuen, Steeve Chung Kim. "Deformation and tearing of uniformly blast-loaded quadrangular stiffened plates." Master's thesis, University of Cape Town, 2000. http://hdl.handle.net/11427/14952.

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An investigation into the deformation and tearing of stiffened quadrangular plates subjected to a uniform blast load is presented. A series of experimental results and numerical modelling using the finite element package; ABAQUS, on built-in quadrangular mild steel plates of different stiffener configurations and sizes subjected to a uniform blast load are reported. The main objectives of this investigation are to determine the dynamic response of stiffened quadrangular plates subjected to uniform blast loads, to assess the effect of the stiffener configuration and size on plate failure and to use a new approach that uses material properties that include temperature dependency to model the plate response. The experimental procedure consists of creating an impulsive load with the use of plastic explosive and measuring the resulting impulse using a ballistic pendulum. Explosive is centrally laid out in two concentric rectangular annuli on quadrangular plates of thickness 1.6mm with stiffeners of sizes; 3x3mm, 3x7mm, 4x3mm and 4x7mm; and configurations; none, single, double, cross and double cross; to provide the impulse required to give deformations up to plate tearing. In all the tests of Mode I category of large inelastic deformation, the plate profiles are characterised by a uniform global dome. The results of mid-point deflection versus impulse for the various stiffener sizes and configurations for Mode I show a generally linear relationship. In all the experiments, thinning mechanisms at the boundary are observed for all plates despite different stiffener sizes and configurations. Thinning, however, is not consistent all around the boundary. Thinning is also observed at the stiffener side closest to the boundary for double and double cross stiffened plates. There is, furthermore, a reduction in the stiffener width where two stiffeners cross each other perpendicularly.
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Muluh, Esau Ticha. "Analysis of deformation and tearing of uniformly blast-loaded circular and square plates rectangular beams and T-beams." Master's thesis, University of Cape Town, 2001. http://hdl.handle.net/11427/5500.

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This investigation examines the failure of circular and square mild steel plates, aluminium rectangular beams and T-beams subjected to impulsive loads. The objective of this investigation is to numerically determine the dynamic response of circular and square plates, rectangular beams and T-beams clamped and built-in (integral) at the boundary subjected to uniform blast loading; use material properties that include and exclude temperature dependency to model the plates and beams response and failure and finally to compare the numerical results with experimental results.
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Gelman, Mark Ernest. "A numerical study of the response of blast loaded thin circular plates, with both clamped and integral boundary conditions." Master's thesis, University of Cape Town, 1996. http://hdl.handle.net/11427/9256.

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This report sets out the results of a numerical investigation into the response of thin circular plates subjected to impulsive loads, using the commercial finite element code ABAQUS. iv Previous theoretical and numerical predictions of plate response have assumed a fully constrained boundary condition, while experiments have involved the use of both clamped and integral (fully built-in) boundary conditions. The current analysis employs 4-noded continuum elements in the finite element model, that allow the experimental boundary conditions to be modelled closely. Fully built-in plates are modelled by the inclusion of a material boundary, and clamped plates by the use of rigid clamping elements and a simple friction condition between the clamps and the plate surface. The inclusion of fillet radii at the integral boundary, and an edge radius at the clamped boundary, have been reported in additional experiments. These modifications are also modelled in the current investigation. The finite element model incorporates non-linear geometry and material effects, and strain rate sensitivity is included in the viscoplastic material definition. Impulsive loading is implemented through short duration pressure pulses, while the use of a uniform initial velocity profile is also shown to give good results. An explicit time integration scheme is used for the dynamic structural response.
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McCallef, Karl. "The dynamic response of blast-loaded monolithic and composite plated structures." Thesis, Imperial College London, 2013. http://hdl.handle.net/10044/1/40127.

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The scope of the thesis is to investigate the dynamic behaviour of plated structures when subjected to blast loading, focusing in particular on localised blast loading. Two main categories of plated structures are investigated, viz. monolithic plates and composite plates. The thesis includes a literature survey of existing works on the subject, which concludes that there is no available method of describing a localised blast load arising from a given charge size, geometry and stand-off distance from target. The review also investigates analytical methods for predicting displacement of plates subjected to blast, assuming rigid-plastic behaviour and the concept of using dimensionless parameters to predict such displacements. The survey also reviews material models for composites and damage mechanisms for these materials. On the basis of these findings, the thesis proposes a systematic method of mathematically describing the spatial and temporal variations of a localised blast load from a known set of threat parameters (explosive type, quantity, size and stand-off distance). The method is validated by comparison of numerical results using the proposed loading function implemented in a finite element analysis software with experimental results of blast loads on steel plates. This leads to the first study, which focuses on the performance of monolithic plates subjected to a blast load of the form described above. Existing formulations for uniform loading found in the literature are extended to consider this new form of loading. Various plate thicknesses are investigated (thick, moderately thick and thin) and it is found that good correlation is achieved with numerical results, even when the blast load is simplified into an impulsive one. The performance of composite plates under blast loading is also investigated, focusing primarily on a new high-performance composite material (namely, Dyneema HB26). Material characterisation and blast loading tests were carried out and these were used to develop a material model for Dyneema, which is validated using finite element simulations. Its performance is numerically compared with mild and armour (Armox 370T Class 1) steel plates of equal areal density and it is found that Dyneema offers an improvement over mild steel, but armour steel plates lead to the least permanent midpoint deflection. Using dimensionless parameters, a simple design guideline is provided to estimate the deflection for a given plate geometry made of a monolithic or composite material subjected to a specific blast load. The use of this guideline was also illustrated by considering various threats and using the proposed method to recommend various plate thicknesses required for different material systems to meet a specified damage limitation. Furthermore, a numerical-analytical method is proposed to predict the occurrence of Mode I delamination (or separation between the plies) in the early-time response of laminated composite materials, by means of stress propagation analysis.
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Schubak, Robert Brian. "Nonlinear rigid-plastic analysis of stiffened plates under blast loads." Thesis, University of British Columbia, 1991. http://hdl.handle.net/2429/31482.

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The large ductile deformation response of stiffened plates subjected to blast loads is investigated and simplified methods of analysis of such response are developed. Simplification is derived from modelling stiffened plates as singly symmetric beams or as grillages thereof. These beams are further assumed to behave in a rigid, perfectly plastic manner and to have piecewise linear bending moment-axial force capacity interaction relations, otherwise known as yield curves. A blast loaded, one-way stiffened plate is modelled as a singly symmetric beam comprised of one stiffener and its tributary plating, and subjected to a uniformly distributed line load. For a stiffened plate having edges fully restrained against rotations and translations, both transverse and in-plane, use of the piecewise linear yield curve divides the response of the beam model into two distinct phases: an initial small displacement phase wherein the beam responds as a plastic hinge mechanism, and a final large displacement phase wherein the beam responds as a plastic string. If the line load is restricted to be a blast-type pulse, such response is governed by linear differential equations and so may be solved in closed form. Examples of a one-way stiffened plate subjected to various blast-type pulses demonstrate good agreement between the present rigid-plastic formulation and elastic-plastic beam finite element and finite strip solutions. The response of a one-way stiffened plate is alternatively analysed by approximating it as a sequence of instantaneous mode responses. An instantaneous mode is analogous to a normal mode of linear vibration, but because of system nonlinearity exists for only the instant and deformed configuration considered. The instantaneous mode shapes are determined by an extremum principle which maximizes the rate of change of the stiffened plate's kinetic energy. This approximate rigid-plastic response is not solved in closed form but rather by a semi-analytical time-stepping algorithm. Instantaneous mode solutions compare very well with the closed-form results. The instantaneous mode analysis is extended to the case of two-way stiffened plates, which are modelled by grillages of singly symmetric beams. For two examples of blast loaded two-way stiffened plates, instantaneous mode solutions are compared to results from super finite element analyses. In one of these examples the comparison between analyses is extremely good; in the other, although the magnitudes of displacement response differ between the analyses, the predicted durations and mechanisms of response are in agreement. Incomplete fixity of a stiffened plate's edges is accounted for in the beam and grillage models by way of rigid-plastic links connecting the beams to their rigid supports. Like the beams, these links are assumed to have piecewise linear yield curves, but with reduced bending moment and axial force capacities. The instantaneous mode solution is modified accordingly, and its results again compare well with those of beam finite element analyses. Modifications to the closed-form and instantaneous mode solutions to account for strain rate sensitivity of the panel material are presented. In the closed-form solution, such modification takes the form of an effective dynamic yield stress to be used throughout the rigid-plastic analysis. In the time-stepping instantaneous mode solution, a dynamic yield stress is calculated at each time step and used within that time step only. With these modifications in place, the responses of rate-sensitive one-way stiffened plates predicted by the present analyses once again compare well with finite element and finite strip solutions.
Applied Science, Faculty of
Civil Engineering, Department of
Graduate
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Coggin, John Moore. "Response of Isotropic and Laminated Plates to Close Proximity Blast Loads." Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/31477.

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The transient response of various plate structures subject to blast loads is analyzed. In particular, simply supported isotropic and laminated composite plates are modeled using the commercial finite element code NASTRAN and the method of modal superposition. Both analysis procedures are used to quantify the linear transient response of such plates subject to uniform and patch blast loads. Furthermore, NASTRAN is used to study the nonlinear response of plates subject to close proximity explosions. Also considered here is the case for which a blast loaded plate impacts another closely neighboring plate. The NASTRAN solution used here accounts for nonlinearities due to large plate deflections, plasticity, and plate-to-plate contact. Many studies are currently available in which the blast load is considered to be spatially uniform across the plate; with a temporal distribution described by step, N-pulse, or Friedlander equations. The novel aspect considered here is the case for which the blast pressure is due to a close proximity explosion, and it is therefore taken to be both spatially and temporally varying. A FORTRAN program is described which automates the application of an arbitrary blast load to a generic finite element mesh. The results presented here are a collection of analyses performed for a variety of parameters important to the dynamic response of blast loaded contacting plates. Conclusions are drawn concerning the influence of the various parameters on the nature of the plate response and the quality of the solution.
Master of Science
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Hassan, Noha Mohamed. "Damage Development in Static and Dynamic Deformations of Fiber-Reinforced Composite Plates." Diss., Virginia Tech, 2005. http://hdl.handle.net/10919/30171.

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A three-dimensional finite element code to analyze coupled thermomechanical deformations of composites has been developed. It incorporates geometric nonlinearities, delamination between adjoining layers, and damage due to fiber breakage, fiber/matrix debonding, and matrix cracking. The three damage modes are modeled using the theory of internal variables and the delamination by postulating a failure envelope in terms of the transverse stresses; the damage degrades elastic moduli. The delamination of adjoining layers is simulated by the nodal release technique. Coupled nonlinear partial differential equations governing deformations of a composite, and the pertinent initial and boundary conditions are first reduced to coupled ordinary differential equations (ODEs) by the Galerkin method. These are integrated with respect to time with the Livermore solver for ODEs. After each time step, the damage in an element is computed, and material properties modified. The code has been used to analyze several static and transient problems; computed results have been found to compare well with the corresponding test results. The effect of various factors such as the fiber orientation, ply stacking sequence, and laminate thickness on composite's resistance to shock loads induced by underwater explosions has been delineated.
Ph. D.
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Yuan, Lisha. "Optimum First Failure Loads of Sandwich Plates/Shells and Vibrations of Incompressible Material Plates." Diss., Virginia Tech, 2021. http://hdl.handle.net/10919/102664.

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Due to high specific strength and stiffness as well as outstanding energy-absorption characteristics, sandwich structures are extensively used in aircraft, aerospace, automobile, and marine industries. With the objective of finding lightweight blast-resistant sandwich structures for protecting infrastructure, we have found, for a fixed areal mass density, one- or two-core doubly-curved sandwich shell's (plate's) geometries and materials and fiber angles of unidirectional fiber-reinforced face sheets for it to have the maximum first failure load under quasistatic (blast) loads. The analyses employ a third-order shear and normal deformable plate/shell theory (TSNDT), the finite element method (FEM), a stress recovery scheme (SRS), the Tsai-Wu failure criterion and the Nest-Site selection (NeSS) optimization algorithm, and assume the materials to be linearly elastic. For a sandwich shell under the spatially varying static pressure on the top surface, the optimal non-symmetric one-core (two-core) design improves the first failure load by approximately 33% (27%) and 50% (36%) from the corresponding optimal symmetric design with clamped and simply-supported edges, respectively. For a sandwich plate under blast loads, it is found that the optimal one-core design is symmetric about the mid-surface with thick face sheets, and the optimal two-core design has a thin middle face sheet and thick top and bottom face sheets. Furthermore, the transverse shear stresses (in-plane transverse axial stresses) primarily cause the first failure in a core (face sheet). For the computed optimal design under a blast load, we also determined the collapse load by using the progressive failure analysis that degrades all elasticities of the failed material point to very small values. The collapse load of the clamped (simply-supported) sandwich structure is approximately 15%–30% (0%–17%) higher than its first failure load. Incompressible materials such as rubbers, polymers, and soft tissues that can only undergo volume preserving deformations have numerous applications in engineering and biomedical fields. Their vibration characteristics are important for using them as wave reflectors at interfaces with a fiber-reinforced sheet. In this work we have numerically analyzed free vibrations of plates made of a linearly elastic incompressible rubber-like material (Poison's ratio = 0.5) by using a TSNDT for incompressible materials and the mixed FEM. The displacements at nodes of a 9-noded quadrilateral element and the hydrostatic pressure at four interior nodes are taken as unknowns. Computed results are found to match well with the corresponding either analytical or numerical ones obtained with the commercial FE software Abaqus and the 3-dimensional linear elasticity theory. The analysis discerns plate's in-plane vibration modes. It is found that a simply supported plate admits more in-plane modes than the corresponding clamped and clamped-free plates.
Doctor of Philosophy
A simple example of a sandwich structure is a chocolate ice cream bar with the chocolate layer replaced by a stiff plate. Another example is the packaging material used to protect electronics during shipping and handling. The intent is to find the composition and the thickness of the "chocolate layer" so that the ice cream bar will not shatter when dropped on the floor. The objective is met by enforcing the chocolate layer with carbon fibers and then finding fiber materials, their alignment, ice cream or core material, and its thickness to resist anticipated loads with a prescribed level of certainty. Thus, a sandwich structure is usually composed of a soft thick core (e.g., foam) bonded to two relatively stiff thin skins (e.g., made of steel, fiber-reinforced composite) called face sheets. They are lightweight, stiff, and effective in absorbing mechanical energy. Consequently, they are often used in aircraft, aerospace, automobile, and marine industries. The load that causes a point in a structure to fail is called its first failure load, and the load that causes it to either crush or crumble is called the ultimate load. Here, for a fixed areal mass density (mass per unit surface area), we maximize the first failure load of a sandwich shell (plate) under static (dynamic) loads by determining its geometric dimensions, materials and fiber angles in the face sheets, and the number (one or two) of cores. It is found that, for a non-uniformly distributed static pressure applied on the central region of a sandwich shell's top surface, an optimal design that has different materials for the top and the bottom face sheets improves the first failure load by nearly 30%-50% from that of the optimally designed structure with identical face sheets. For the structure optimally designed for the first failure blast load, the ultimate failure load with all of its edges clamped (simply supported) is about 15%-30% (0%-17%) higher than its first failure load. This work should help engineers reduce weight of sandwich structures without sacrificing their integrity and save on materials and cost. Rubberlike materials, polymers, and soft tissues are incompressible since their volume remains constant when they are deformed. Plates made of incompressible materials have a wide range of applications in everyday life, e.g., we hear because of vibrations of the ear drum. Thus, accurately predicting their dynamic behavior is important. A first step usually is determining natural frequencies, i.e., the number of cycles of oscillations per second (e.g., a human heart beats at about 1 cycle/sec) completed by the structure in the absence of any externally applied force. Here, we numerically find natural frequencies and mode shapes of rubber-like material rectangular plates with different supporting conditions at the edges. We employ a plate theory that reduces a 3-dimensional (3-D) problem to a 2-D one and the finite element method. The problem is challenging because the incompressibility constraint requires finding the hydrostatic pressure as a part of the problem solution. We show that the methodology developed here provides results that match well with the corresponding either analytical or numerical solutions of the 3-D linear elasticity equations. The methodology is applicable to analyzing the dynamic response of composite structures with layers of incompressible materials embedded in it.
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Henchie, Travis Foster. "The response of circular plates to repeated uniform blast loads an experimental and numerical study." Master's thesis, University of Cape Town, 2013. http://hdl.handle.net/11427/5533.

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On-going war and terrorist attacks contribute to a variety of impulsive loading of structures that often result in life changing injury or death. Improvised explosive devices (IEDs) and landmines accounted for 1761 deaths in Afghanistan during 2009 [1], with many more casualties as a result from conflict occurring throughout the world.
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Wiehahn, Miles Alexander. "Circular plates subjected to localised blast loads : some insights into the mechanism of tearing and the energy required." Master's thesis, University of Cape Town, 2000. http://hdl.handle.net/11427/5451.

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Includes bibliographical references (leaves 76-79).
The scope of this study extends to experimental tests of plates subjected to blast loads with the intention of measuring the velocity of fragments and the subsequent modelling of the plates. A comparison of the results of the numerical and experimental results must be undertaken. An energy balance of the fractured plates must be undertaken with the aim of determining the energy of tearing.
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Books on the topic "Blast Loaded Plates"

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Birman, Victor. Response of composite plates to blast loading. [S.l.]: [s.n.], 1987.

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Malone, Matthew James. Experimental testing and finite element analysis of plates and shells subject to blast loading. [Downsview, Ont.}: University of Toronto, Department of Aerospace Science and Engineering, 1990.

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Book chapters on the topic "Blast Loaded Plates"

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Mofflin, D. S., M. D. Olson, and D. L. Anderson. "Finite Strip Analysis of Blast Loaded Plates." In Finite Element Methods for Nonlinear Problems, 539–53. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-82704-4_30.

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Spranghers, K., D. Lecompte, H. Sol, and J. Vantomme. "Deformation measurements and simulations of blast loaded plates." In Dynamic Behavior of Materials, Volume 1, 375–81. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4614-0216-9_52.

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Spranghers, K., D. Lecompte, H. Sol, and J. Vantomme. "Material Identification of Blast Loaded Aluminum Plates Through Inverse Modeling." In Dynamic Behavior of Materials, Volume 1, 319–26. Cham: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-00771-7_39.

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Förch, Matthias. "Blast Pressure Capacity of Glass Plates." In Analysis of Glass Panels Subjected to Blast Load, 93–127. Berlin, Heidelberg: Springer Berlin Heidelberg, 2019. http://dx.doi.org/10.1007/978-3-662-59087-4_7.

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Förch, Matthias. "Analysis of Monolithic Glass Plates Subjected to Idealized Blast Load." In Analysis of Glass Panels Subjected to Blast Load, 29–57. Berlin, Heidelberg: Springer Berlin Heidelberg, 2019. http://dx.doi.org/10.1007/978-3-662-59087-4_5.

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Bilal, Sunkesula Mohammad, Samarjeet Kumar, and Vishesh Ranjan Kar. "Transient Characteristics of Carbon Nanotube–Reinforced Composite Plates under Blast Load." In Advanced Composite Materials and Structures, 109–38. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003158813-7.

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Kar, Uttam Kumar, and J. Srinivas. "Free Vibration and Blast Load Analysis of Porous Functionally Graded Plates." In Composite Materials for Extreme Loading, 519–33. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-4138-1_34.

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Rodcheuy, Nunthadech, and George A. Kardomateas. "Concentrated Load Impulse Response of a Sandwich Beam/Wide Plate: Dynamic Elasticity and Extended High Order Sandwich Panel Theory Solutions." In Blast Mitigation Strategies in Marine Composite and Sandwich Structures, 97–117. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-7170-6_5.

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Hu, Guangqing, and Taochun Yang. "Dynamic displacement calculation of constrained steel plate based on rigid plastic model under blast load." In Structural Seismic and Civil Engineering Research, 487–93. London: CRC Press, 2023. http://dx.doi.org/10.1201/9781003384342-62.

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Kazancı, Zafer. "Computational Methods to Predict the Nonlinear Dynamic Response of Blast Loaded Laminated Composite Plates." In Explosion Blast Response of Composites, 85–112. Elsevier, 2017. http://dx.doi.org/10.1016/b978-0-08-102092-0.00004-2.

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Conference papers on the topic "Blast Loaded Plates"

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Veldman, R. L., J. Ari-Gur, and C. Clum. "Effects of Pre-Pressurization on Damage of Blast-Loaded Reinforced Plates." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-80861.

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The effects of pre-pressurization on blast-loaded reinforced rectangular aluminum plates were studied experimentally. In this study, small (0.508 × 0.609 × 0.0016 meter) clamped plates with rivet attached reinforcing members were used as a basic model of the fuselage skin of a commercial aircraft. Both non-pressurized and pre-pressurized plates (static pressure of 41.4 kPa (6.0 psi)) were considered to simulate the typical in-flight loads experienced by a commercial aircraft due to cabin pressurization. This work extends previous research on blast loading of pre-pressurized plates to incorporate the effects of reinforcing members [1]. An experimental configuration was designed using a vacuum vessel system to apply a pressure differential to the reinforced test plate. Bare spherical explosive charges of C4 were then detonated at fixed distances from the plate. The permanent plate deformations or the amount of tearing in the plates were measured for seventeen explosive tests that considered two different blast load intensities. Additionally, a high-speed camera was used to determine the mechanism and time scale of failure propagation in the reinforced panels. The high speed camera was used found to be an excellent tool to record the failure progression in the reinforced panels under blast loading. In general, commencing with the onset of panel deformation, the blast-loaded panels exhibited rivet failure in less than 0.5 milliseconds, initiation of plate tearing in less than 1.0 millisecond, and completion of plate tearing by about 10.0 milliseconds. A comparison of plate deformations and damage showed two distinct results. For the least intense blast load case, both the non-pressurized and pressurized panels deformed but did not tear. In this case, very little effect of pre-pressurization on final panel deformation was noted. For the more intense blast load case, a significant increase in panel damage was observed as static pre-pressurization increased from 0.0 kPa to 41.4 kPa.
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ATOUI, OUSSAMA, ABDELHAFIDH MOUMEN, MOUHAMED DHOUIBI, AZER MAAZOUN, BACHIR BELKASSEM, LINCY PYL, and DAVID LECOMPTE. "THE INFLUENCE OF PREFORMED HOLES ON THE DYNAMIC RESPONSE OF BLAST LOADED ALUMINUM PLATES." In 32ND INTERNATIONAL SYMPOSIUM ON BALLISTICS. Destech Publications, Inc., 2022. http://dx.doi.org/10.12783/ballistics22/36149.

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In this paper, the dynamic response of Aluminum plates with predrilled holes subjected to different intensities of blast loading is studied both experimentally and numerically as to imitate the case where fragments strike and perforate the plates before the load pressure arrives. The blast loading is applied using an Explosive Driven Shock Tube (EDST) [10-12] which ensures a uniformly distributed blast wave on the test specimens. Experiments were carried out for different sizes, positions, and numbers of the predrilled holes in the plates positioned at the end extremity of the tube. Special focus is dedicated to investigate the influence of these parameters on the dynamic response and failure characteristics of plates via the Digital Image Correlation technique (DIC). Numerical simulations were performed in the finite element code LS-DYNA to recreate the plate deformation and the observed phenomena seen in the experiments.
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Yang, Ping, and Ying Peng. "Dynamic Response of Blast-Loaded Stiffened Plates by Rigid-Plastic Analysis." In ASME 2010 29th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/omae2010-21044.

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The dynamic response of one-way stiffened plates with clamped edges subjected to uniformly distributed blast-induced shock loading is theoretically investigated using a singly symmetric beam model. The beam model is based on the rigid-perfectly plastic assumption. The bending moment-axial force capacity interaction relation or yield curve for singly symmetric cross-section is derived and explicitly presented. The deflection condition that a plastic string response must satisfy is determined by the linearized interaction curve and associated plastic flow rule. Moreover, the possible motion mechanisms of the beam are discussed under different load intensity. Finally the dynamic response of a one-way stiffened plate is calculated theoretically and numerically. Good agreements are obtained between the presented theoretical results and those from numerical calculations of the FEM software ANSYS and ABAQUS/Explicit. It is concluded that the basic assumptions and approximations for simplifying calculations are reasonable and the beam model in theoretical analysis is adoptable. The example also shows that an arbitrary blast load can be replaced equivalently by a rectangular type pulse.
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Chen, Ganchao, Yuansheng Cheng, Jun Liu, Changzai Zhang, Tianyu Zhou, and Pan Zhang. "Performance Evaluation of Air-Backed Metallic Circular Plates Subjected to Close-In Underwater Explosion." In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-62179.

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The topic on performance evaluation of air-backed metallic structures subjected to close-in underwater explosion is of interest to protecting construction designers. The focus of performance includes not only the deformation/failure modes but also the energy absorption capability. This paper presented a blast experiment to investigate the blast resistance of circular solid plate. The deformation and failure modes were classified. The energy absorption of the blast-loaded plate was quantified by the response of another plate, which was arranged below the target. Particular attention was paid to discussing the effects of the charge mass and stand-off distance (SoD) on the blast performance. Results showed that the target plates appeared to experience petalling failure in case of contact tests and large inelastic deformation in case of noncontact. The shock waves induced by the blast explosion and the fragments teared from the target plates caused a capping or some permanent deformation on rear plates. Damages and deformations of target and rear plates were strongly correlated with the explosion intensity. As the increase of stand-off distance, the failure mode of target plates transitioned from petalling to large inelastic deformation. Experimental results presented in this paper provided valuable guidance for the following research on sandwich structures.
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Tuna, Murat, and Halit S. Turkmen. "Dynamic Behavior of a Plate Under Air Blast Load Using Differential Quadrature Method." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-41553.

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The effect of blast load on the plate and shell structures has an important role on design decision. Blast load experiments are usually difficult and expensive. Therefore, numerical studies have been done on the response of blast loaded structures. However, because of time dependency of the nature of the problem, numerical solutions take long time and need heavy computational effort. The differential quadrature method (DQM) is a numerical solution technique for the rapid solution of linear and non-linear partial differential equations. It has been successfully applied to many engineering problems. The method has especially found application widely in structural analysis such as static and free vibration analysis of beams and plates. The capability of the method to produce highly accurate solutions with minimal computational efforts makes it of current interest. In this paper, the dynamic behavior of isotropic and laminated composite plates under air blast load has been investigated using the differential quadrature method. The results are compared to the numerical and experimental results found in the literature.
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Stofleth, Jerome H., Megan K. Tribble, John Ludwigsen, and Robert W. Crocker. "Analysis of EDS Vessel Clamping System and Door Seal." In ASME 2019 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/pvp2019-93755.

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Abstract The V26 containment vessel was procured by the Project Manager, Non-Stockpile Chemical Materiel (PMNSCM) for use on the Phase-2 Explosive Destruction Systems. The vessel was fabricated under Code Case 2564 of the ASME Boiler and Pressure Vessel Code, which provides rules for the design of impulsively loaded vessels. The explosive rating for the vessel, based on the Code Case, is nine (9) pounds TNT-equivalent for up to 637 detonations, limited only by fatigue crack growth calculations initiated from a minimum detectable crack depth. The vessel consists of a cylindrical cup, a flat cover or door, and clamps to secure the door. The vessel is sealed with a metal gasket. The body is a deep cylindrical cup machined from a 316 stainless steel forging. The door is also machined from a 316 stainless steel forging. The closure clamps are secured with four 17-4 PH steel threaded rods with 4140 alloy steel threadednuts on one end and hydraulic nuts on the other. A flange with four high-voltage electrical feedthroughs is bolted to the door and sealed with a small metal gasket. These feedthroughs conduct the firing signals for the high-voltage Exploding Bridge-wire detonators. Small blast plates on the inside of the door protect fluidic components and electrical feedthroughs. A large blast plate provides additional protection. Both vessel door and feedthrough flange employ O-ring seals outside the metal seals in order to provide a mechanism for helium leak checks of the volume just outside the metal seal surface before and after detonation. In previous papers (References 2 and 3), the authors describe results from testing of the vessel body and ends under qualification loads, determining the effective TNT equivalency of Composition C4 (EDS Containment Vessel TNT Equivalence Testing) and analyzing the effects of distributed explosive charges versus unitary charges (EDS Containment Vessel Explosive Test and Analysis). In addition to measurements made on the vessel body and ends as reported previously, bulk motion and deformation of the door and clamping system was made. Strain gauges were positioned at various locations on the inner and outer surface of the clamping system and on the vessel door surface. Digital Image Correlation was employed during both hydrostatic testing and dynamic testing under full-load explosive detonation to determine bulk and bending motion of the door relative to the vessel body and clamping system. Some limited hydrocode and finite element code analysis was performed on the clamping system for comparison. The purpose of this analysis was to determine the likelihood of a change in the static sealing efficacy of the metal clamping system and to evaluate the possibility of dynamic burping of vessel contents during detonation. Those results will be reported in this paper.
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Hinz, Brandon J., Matthew V. Grimm, Karim H. Muci-Ku¨chler, and Shawn M. Walsh. "Comparative Study of the Dynamic Response of Different Materials Subjected to Compressed Gas Blast Loading." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-64395.

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Understanding the dynamic response of materials under blast and impact loading is of interest for both military and civilian applications. In the case of blast loading, the mitigation characteristics of materials employed in personal protective equipment (PPE) is of particular importance. Without adequate protection, exposure of the head to blast waves may result in or contribute to brain tissue damage leading to traumatic brain injury (TBI). The development of simple but representative laboratory experiments that can be used to study the mechanical response of different materials and/or material combinations to blast loading could be very useful for the design of PPE such as helmets. This paper presents a basic experimental setup that can be conveniently used to perform such studies using small scale compressed gas blasts. An open end shock tube is employed to generate the blasts used to load flat plate samples placed in a special rigid holder. Acceleration time histories at selected locations in the sample are used to generate data to compare the dynamic response and blast mitigation effectiveness of different specimens. High speed schlieren video is used to correlate the arrival of the shock wave and air flow that follows with the motion of the test sample.
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8

Coggin, John M., Jeffrey M. K. Chock, Rakesh K. Kapania, and Eric R. Johnson. "Transient Response of Laminated Plates Subject to Close Proximity Explosions." In ASME 1999 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/imece1999-0144.

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Abstract We study the transient response of simply supported composite plates subject to close proximity explosions. Many studies are currently availiable in which the blast load is applied uniformly across the plate; and is described by step, N-pulse, or Friedlander equations. The novel aspect considered here is the case for which the blast pressure is due to a close proximity explosion, and is therefore taken to be both spatially and temporally varying. Two methods for calculating blast pressures are developed for arbitrary blast size and distance. A FORTAN program is described that automates the application of an arbitrary blast load to a generic finite element mesh. Modal superposition and NASTRAN solution procedures are verified for several load types and stacking sequences. Results are obtained within the framework of classical and first order plate theories for a variety of parameters including; stacking sequence, blast size, blast distance, and blast calculation method.
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9

Birari, V. M. "Investigation of blast resistance of cladding with square dome-shaped Kirigami folded structures as core." In Advanced Topics in Mechanics of Materials, Structures and Construction. Materials Research Forum LLC, 2023. http://dx.doi.org/10.21741/9781644902592-39.

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Abstract. This study examines the response of Square Dome-shaped Kirigami (SDK) structures when used as a core in cladding systems under blast loading conditions. A numerical model of the SDK foldcore is developed on the commercially available software ABAQUS. The SDK foldcore made of an aluminium sheet is placed between two rigid plates. The model is put under a quasi-static compression test to simulate the crushing effect and the results are used to calibrate the simulation with the experimental data from the literature. To evaluate the blast resistance of the system, four different levels of blast loading conditions are applied to the top of the top plate using Trinitrotoluene (TNT) explosive, with a distance of 1500 mm from the centre of the top plate. The structural response of the SDK foldcore is then compared with that of a traditional Square Honey Comb (SHC) core under the same blast loading conditions. This study aims to evaluate the relative performance of the two different cores in terms of their ability to mitigate the effects of blast loading. The SDK foldcore demonstrated the capability to disperse blast energy over a wider area, thus decreasing the stress the cladding system experienced. The results of the study show that SDK foldcore provides a significant improvement in energy absorption, with a maximum reduction of 70% in the peak load transmitted compared to the case with no cladding. The peak load transmitted by the SDK foldcore is much more consistent than the SHC core, even under different blast loading conditions. This is due to its favourable plastic deformation, which prevents complete densification. These results suggest that the SDK folded structure has better performance in mitigating the effects of blast loading.
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Bas¸, Ali, Zafer Kazancı, and Zahit Mecitog˘lu. "Nonlinear Response of a Sandwich Plate Subjected to Blast Load." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-41152.

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Present work includes in-plane stiffness and inertia effects on the motion of a sandwich plate under blast load. The geometric nonlinearity effects are taken into account with the von Ka´rma´n large deflection theory of thin plates. All edges clamped boundary conditions are considered in the analyses. The equations of motion for the plate are derived by the use of the virtual work principle. Approximate solutions are assumed for the space domain and substituted into the equations of motion. Then the Galerkin Method is used to obtain the nonlinear differential equations in the time domain. The finite difference method is applied to solve the system of coupled nonlinear equations. The results of theoretical analyses are obtained.
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