Experimental study of water tank under impulsive loading

Wang, Yonghui; Lee, S.C.

doi:10.1016/j.acme.2014.09.006

Cited by 8 publications

(3 citation statements)

References 15 publications

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“…The air was modelled by using material 9 (MAT_Null), which required defining the linear polynomial equation of state (EOS) [24]. The pressure was calculated by using the following equation [34,35]: The air was modelled by using material 9 (MAT_Null), which required defining the linear polynomial equation of state (EOS) [24]. The pressure was calculated by using the following equation [34,35]:…”

Section: Geometry Details and Meshingmentioning

confidence: 99%

Blast Damage Assessment of Symmetrical Box-Shaped Underground Tunnel According to Peak Particle Velocity (PPV) and Single Degree of Freedom (SDOF) Criteria

et al. 2018

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This study aimed to determine the reliability of the damage criteria that was adopted by the peak particle velocity (PPV) method and the single degree of freedom (SDOF) approach to assess the damage level of a box-shaped underground tunnel. An advanced arbitrary Lagrangian Eulerian (ALE) technique available in LS-DYNA software was used to simulate a symmetrical underground tunnel that was subjected to a surface detonation. The validation results of peak pressure into the soil revealed a good consistency with the TM5-855-1 manual within differences that were much less than previous numerical studies. The pressure contours revealed that the blast waves travelled into the soil in a hemispherical shape and the peak reflected the pressure of the tunnel that occurred immediately before the incident pressure reached its highest value. The assessment results proved that the criteria of the above methods could efficiently predict the damage level of a box-shaped tunnel under different circumstances of explosive charge weight and lining thickness at a depth of 4 m within slight differences that were observed during van and small delivery truck (SDT) explosions. However, the efficiency of both the methods was varied with the increase of burial depth. Whereas, using the PPV method significantly underestimated or overestimated the damage level of the tunnel, especially during SDT and container explosions with a lining thickness of 250 mm at burial depths of 6 and 8 m, respectively, the damage level that was obtained by the SDOF method greatly matched with the observed failure modes of the tunnel. Furthermore, new boundary conditions and equations were proposed for the damage criteria of the PVV method.

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Section: Geometry Details and Meshingmentioning

confidence: 99%

Blast Damage Assessment of Symmetrical Box-Shaped Underground Tunnel According to Peak Particle Velocity (PPV) and Single Degree of Freedom (SDOF) Criteria

et al. 2018

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“…An innovative water storage façade shaped in the form of a thin tank that can be used to harvest solar energy and reduce thermal heat penetration into buildings during normal daily operations [1,2] and at the same time is an effective protective layer in the event of blast attack was thus envisioned to achieve the multi-functional design. The experimental, numerical and analytical studies have been conducted to study the structural performance of water tank under dynamic pressure and blast loading in order to extend the multi-uses of water tank [3][4][5][6]. It was found from the numerical studies that the blast resistant capacity of water tank could be significantly increased by developing tensile membrane force when the water tank was imposed with axially restrained boundary condition [5].…”

Section: Introductionmentioning

confidence: 99%

Blast performance of water tank with energy absorbing support

Wang

Liew

2015

Thin-Walled Structures

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“…Some researchers were interested in tapered thin-walled rectangular tubes for their high impact energy absorption [1,2]. The liquid or foam filled inside structures had long known for their abilities to absorb and to dissipate high-velocity impact loads [3][4][5][6][7][8][9][10][11][12][13][14][15] Some of researches aimed to find effects of liquid levels filled inside structures on abilities to absorb impact energy [16,17] while other focused on controlling liquid sloshing inside structures [18] or determined vibration characteristic of liquid [19] during impact. One application of liquid filled inside structure is not only to absorb impact energy but also to add weight to the structure for minimizing its structural movement commonly found in design of vehicle barriers [20,21].…”

Section: Introductionmentioning

confidence: 99%

Impact Analyses of a Tennis Ball onto Water-Filled Containers

Pintobtang

Puttapitukporn

2017

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Abstract. Water-filled containers have long known for its structural characteristic of impact load absorption. This paper presents design of structures resisting to impact load resulting from a high-velocity tennis ball. One cubic meter water containers consisting of rectangular, cylindrical, and spherical water containers and water levels were studied for their stress distribution and deformation during maximum deformation period using finite element analysis in the ANSYS 15.0 software. The containers were modeled by using shell elements and made of elasto-plastic material of HDPE plastic. The filled water was model by using fluid elements. We found that as ball velocity increased, maximum von Mises stress increased. However, for post-yielding behavior, maximum von Mises stress approached a constant near yield stress of HDPE material. As ball velocity increased, deformation increased. When water level increased, maximum deformation decreased. For the rectangular and cylindrical containers, when the water level increased, the maximum von Mises stress increased. However, in the spherical container, as water level increased, the maximum von Mises stress was not significant change. Among three water-filled containers, the rectangular container has the highest efficiency in impact absorption, followed by the cylindrical container and the spherical container respectively.

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Experimental study of water tank under impulsive loading

Cited by 8 publications

References 15 publications

Blast Damage Assessment of Symmetrical Box-Shaped Underground Tunnel According to Peak Particle Velocity (PPV) and Single Degree of Freedom (SDOF) Criteria

Blast Damage Assessment of Symmetrical Box-Shaped Underground Tunnel According to Peak Particle Velocity (PPV) and Single Degree of Freedom (SDOF) Criteria

Blast performance of water tank with energy absorbing support

Impact Analyses of a Tennis Ball onto Water-Filled Containers

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