Response of structures to planar blast loads – A finite element engineering approach

Børvik, Tore; Hanssen, A.G.; Langseth, Magnus; Olovsson, Lars

doi:10.1016/j.compstruc.2009.02.005

Cited by 111 publications

(67 citation statements)

References 15 publications

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“…On comparison with available full-scale experimental test data, the fully coupled Eulerian-Lagrangian approach seems to be less accurate than Lagrangian approach. The various commercial softwares such as lS-DynA, ABAQUS, AUTODyn, eUROPleXUS, etc have modules to study the blast-structure interaction problem 56 . A computational fluid dynamics code CFX, validated against published experimental results is used to model detonation of a dense explosive for a 3-D simulation of overpressure wave propagation generated within a small-scale branched tunnel 57 .…”

Section: Numerical Modellingmentioning

confidence: 99%

Blast Valve Design and Related Studies : A Review

2016

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The protective structures required for performing critical operations are vulnerable to the blast and shock loads of advanced weapons. A blast valve is an important component of such structures for ventilation during normal conditions and for protection from blast/ shock during explosion. In this paper, various aspects of blast valve design and related studies are briefly reviewed. The concept and effects of blast wave, blast impact, numerical modelling and deformation of circular plate (one of the critical components of blast valve) have been discussed. The merits and demerits of sensing mechanisms viz. remote and direct sensing are discussed. The leakage of blast pressure during finite closing period of the valve (one of the critical problems) and the shock tube as a major experimental facility for testing of blast valves are briefly discussed.Keywords: Blast valve, wave, leakage, closure mechanism, shock tube Figure 1. Schematic of blast closure valve.

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Section: Numerical Modellingmentioning

confidence: 99%

Blast Valve Design and Related Studies : A Review

2016

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“…Some numerical modeling has been done in the past decades. Børvik et al [10] investigated if a pure Lagrangian formulation could be applied to determine the structural response in a specified blast load problem. Luccioni et.al [11] performed a detailed analysis of the structural failure of a reinforced concrete building caused by a blast load.…”

Section: Introductionmentioning

confidence: 99%

Dynamic response and robustness of tall buildings under blast loading

2013

Journal of Constructional Steel Research

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This is the unspecified version of the paper.This version of the publication may differ from the final published version. Permanent repository link AbstractRecently, extensive research has been focused on the progressive collapse analysis of the multi-storey buildings. However, most of the research is based on the Alternative Path Method (APM) with sudden removal of the columns, ignoring the duration of the blast load working on the structures. In this paper, a 3-D numerical model with the direct simulation of blast load is proposed to study the real behaviour of a 20 storey tall building under the blast loading. A typical package bomb charge of 15 kg was detonated on the 12 th floor. The corresponding dynamic response of structure was studied in details. The robustness of the building under blast load was assessed.Comparison between the proposed method and the APM was also made. It is found that, due to the uplift and downward pressure working on the slab, the column force under the direct blast simulation method is smaller than that of the alternative path method. The method to enhance the robustness of the buildings is also recommended.

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“…They combine the desirable characteristics of Lagrangian and Eulerian formulations. These methods are used in multiple industries for a wide variety of analysis in which fluids interact with structures or when high distortions may appear [36,1,37,16,38,9,7,27,21], including airbag and tire-water dynamics in the automobile field [30,22], the impact of bird strikes on aircraft [14,17], and the effects of sloshing on ships [50]. The Arbitrary Lagrangian Eulerian (ALE) technique is widely used in those kind of problems.…”

Section: Introductionmentioning

confidence: 99%

Numerical modelling of partially filled aircraft fuel tanks submitted to Hydrodynamic Ram

Varas

Zaera

López-Puente

2012

Aerospace Science and Technology

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a b s t r a c t Keywords:Hydrodynamic Ram Fluid-structure interaction Aircraft vulnerability Impact Fuel tank Hydrodynamic Ram (HRAM) is a phenomenon that occurs when a high-kinetic energy object penetrates a fluid-filled container. The projectile transfers its momentum and kinetic energy through the fluid to the surrounding structure, increasing the risk of catastrophic failure and excessive structural damage. This is of particular concern in the design of wing fuel tanks for aircraft since it has been identified as one of the important factors in aircraft vulnerability. Usually the HRAM phenomenon is analyzed considering completely filled tanks, but its effect on partially filled containers should also be taken into account due to the fact that tanks use to be impacted under these conditions. In the present paper, the commercial finite element code LS-DYNA has been used to simulate an HRAM event created by a steel spherical projectile impacting a partially water-filled aluminium square tube. The ALE formulation is employed to reproduce the event. Experimental tests which indicate the pressure at different points of the fluid, displacement of the walls and cavity evolution for different impact velocities, are compared with the numerical results in order to assess the validity and accuracy of the ALE technique in reproducing such a complex phenomenon.

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Response of structures to planar blast loads – A finite element engineering approach

Cited by 111 publications

References 15 publications

Blast Valve Design and Related Studies : A Review

Blast Valve Design and Related Studies : A Review

Dynamic response and robustness of tall buildings under blast loading

Numerical modelling of partially filled aircraft fuel tanks submitted to Hydrodynamic Ram

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