Internal Explosion Load Computation and Structural Response of Storage Tank Based on Heat-Fluid-Solid Coupling

2021 ◽  
Author(s):  
Ye Lu ◽  
Yuqi Ding ◽  
Zengtao Chen
Keyword(s):  
Storage Tank ◽  
Structural Response ◽  
Internal Explosion ◽  
Explosion Load

scholarly journals Behaviors of Thin-Walled Cylindrical Shell Storage Tank under Blast Impacts

2019 ◽  
Vol 2019 ◽  
pp. 1-21
Author(s):  
Shengzhuo Lu ◽  
Wei Wang ◽  
Weidong Chen ◽  
Jingxin Ma ◽  
Yaqin Shi ◽  
...  
Keyword(s):  
Storage Tank ◽  
Structural Response ◽  
Scale Model ◽  
Dynamic Strain ◽  
Economic Losses ◽  
Long Span ◽  
Large Structures ◽  
Structural Responses ◽  
Thin Walled ◽  
The Impact

Large steel storage tanks designed with long-span structures, employed for storing oil and fuel, have been widely used in many countries over the past twenty years. Most of these tanks are thin-walled cylindrical shells. Owing to the high risk of gas explosions and the resulting deaths, injuries, and economic losses, more thorough damage analyses of these large structures should be conducted. This study examines the structural response of a simplified steel storage tank under a blast impact, as calculated by the LS-DYNA software package. The numerical results are then compared with a scale-model experiment. On that basis, the simplified storage tank prototype, which has a 15 × 104 m3 capacity, is analyzed using numerical simulation. In this study, we address issues around the variation in structural responses—particularly of the failure mode, resultant displacement, structural energy, and dynamic strain under the impact. In addition, we also discuss the effects of varying the internal liquid level, constraint conditions, and blast intensity.

scholarly journals Study on Reduction Effect of Vibration Propagation due to Internal Explosion Using Composite Materials

2021 ◽  
Vol 15 (1) ◽  
Author(s):  
Sangwoo Park ◽  
Jangwoon Beak ◽  
Kukjoo Kim ◽  
Young-Jun Park
Keyword(s):  
Field Experiment ◽  
Urban Areas ◽  
Concrete Strength ◽  
Vibration Reduction ◽  
Ground Vibration ◽  
Experimental Conditions ◽  
Acceleration Sensors ◽  
Internal Explosion ◽  
Reduction Effect ◽  
Explosion Load

AbstractWith the increasing installation cases of underground explosive facilities (e.g., ammunition magazines, hydrogen tanks, etc.) in urban areas in recent years, the risk of internal explosions is also increasing. However, few studies on the measures for reducing damage by the ground vibration have been conducted except for maintaining safety distance. In this study, a method for attenuating the vibration propagated outward by installing a blast-proof panel was numerically and experimentally investigated. Two cubical reinforced concrete structures were manufactured according to the concrete strength and a blast-proof panel was installed on only one side of the structure. Then, acceleration sensors were installed on the external surface to evaluate the propagation of vibration outward depending on the installation of a blast-proof panel. Before a field experiment, a preliminary numerical simulation was performed. The results showed that the acceleration propagated outward could be effectively reduced by installing a blast-proof panel. Even though the performance of a blast-proof panel on vibration reduction was also investigated in the field experiment, significantly larger absolute accelerations were estimated due to the different experimental conditions. Finally, the vibration reduction effect of the blast-proof panel was numerically evaluated according to its thickness and the internal explosion load. A blast-proof panel more effectively reduced the acceleration propagated outward as its thickness increased and the explosion load decreased.

Modeling and Simulation of High-Velocity Projectile Impact on Storage Tank

2016 ◽  
Vol 138 (4) ◽  
Author(s):  
Y. W. Kwon ◽  
K. Yang ◽  
C. Adams
Keyword(s):  
High Velocity ◽  
Storage Tank ◽  
Structural Response ◽  
Dynamic Responses ◽  
Second Phase ◽  
Fluid Medium ◽  
Parametric Studies ◽  
Two Phases ◽  
Improved Design ◽  
The Impact

A series of numerical modeling and simulations were conducted for dynamic responses of a fluid-filled storage tank subjected to impact loading resulting from a high-velocity projectile. The focus of the study was placed on two phases. The first phase examined the structural response during the impact period without penetration while the second phase investigated the period of a projectile traveling through a fluid medium inside the storage tank. Some parametric studies were conducted to understand the dynamic responses of the structure. The parameters considered were the fluid filling level in the storage tank, fluid density, tank material properties, and projectile mass and velocity. Understanding what parameters would result in most severe damage to the structure can lead to improved design of storage tanks and proper protection against any potential incident.

scholarly journals Structural response and optimization of airtight blast door under gas explosion load

2017 ◽  
Vol 19 (5) ◽  
pp. 3629-3647 ◽  
Author(s):  
Haitao Li ◽  
Xiaokun Chen ◽  
Qiuhong Wang ◽  
Jiezhuoma La ◽  
Jun Deng
Keyword(s):  
Structural Response ◽  
Gas Explosion ◽  
Explosion Load

Coupled Dynamic Analysis of Liquid Storage Tanks Under Implosion-Generated Overpressure

2019 ◽  
Vol 19 (11) ◽  
pp. 1950128
Author(s):  
Yuqi Ding ◽  
Ye Lu ◽  
Qifa Lu ◽  
Min Luo ◽  
Ziwei Dai
Keyword(s):  
Storage Tank ◽  
Maximum Stress ◽  
Structural Response ◽  
Coupling Model ◽  
Liquid Level ◽  
Coupled Dynamic Analysis ◽  
Liquid Storage ◽  
Tnt Equivalent ◽  
Level Increase ◽  
Liquid Storage Tank

To deal with the effect of liquid storage on the distribution of implosion, a fluid–solid coupling model is built for the shared nodes of implosion in the liquid storage tank. The displacement compatibility and acceleration and speed coupling are achieved between the implosion field (gas, liquid) and liquid storage tank. First, using this model, the implosion-generated overpressure distribution and structural response under the working condition of half filled tank are obtained. The results show that the overpressure, displacement and stress are high on the shell near the liquid level. Then, the effects of both the TNT equivalent and liquid level on implosion in the liquid storage tank are studied. As the TNT equivalent increases, the maximum overpressure, displacement and stress on the shell near the liquid level increase. Consequently, the maximum overpressure and displacement on the shell near the liquid level exceed those at the roof-to-shell connection of the tank. In contrast, as the liquid level increases, the maximum stress and displacement first increase near the shell. After reaching the peaks near half filled level, they begin to decrease. Only when the liquid reaches a certain level, it can have an attenuating effect on the overpressure at the bottom-to-shell connection. However, if the liquid level continues to rise beyond a certain threshold, the attenuating effect is no longer prominent.

scholarly journals Structural Response of Offshore Blast Walls under Accidental Explosion

2014 ◽  
Vol 1043 ◽  
pp. 278-282 ◽  
Author(s):  
Shaikh Atikur Rahman ◽  
Zubair Imam Syed ◽  
John V. Kurian ◽  
M.S. Liew
Keyword(s):  
Structural Response ◽  
Offshore Structures ◽  
Extensive Study ◽  
Design Guidelines ◽  
Critical Systems ◽  
Structural Behaviour ◽  
Single Degree Of Freedom ◽  
Structural Responses ◽  
Simplified Calculation ◽  
Explosion Load

Adequate blast resistant barriers are requisite to protect personnel and critical systems from the consequences of an accidental explosion and subsequent fire. Many of the blast walls currently installed in offshore structures were designed using simplified calculation approaches like Single Degree of Freedom models (SDOF) as recommended in many design guidelines. Over simplified and idealised explosion load used for response calculation and design of blast wall can lead to inadequate or overdesign of offshore blast walls. Due to lack of presence of a well-accepted design guidelines supported by extensive study, the protection provided by the conventional blast walls for offshore structures can be inadequate. In-depth understanding of structural response of blast walls under different blast loading can provide better design practice of blast walls for adequate protection. In this study, structural responses of conventional offshore blast walls were investigated. A computation fluid dynamics (CFD) approach was used to predict effect of different explosions on the barrier walls and non-linear finite elements analyses were performed to study the behaviour of the blast-loaded walls under different explosions. Effect of different parameters related to blast wall and accidental explosions were investigated to gain detail understanding of structural behaviour of typical steel blast wall.

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