Numerical simulation on foam ceramic blasting block device under the action of explosion transform

Sun, Jianhua; Fan, Hongyu; Chunrong, Wei; Jiang, Tianwen; Zhao, Yanling

doi:10.1016/j.ssci.2011.09.011

Cited by 4 publications

(2 citation statements)

References 1 publication

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“…Mokhtari et al [44] examined the effects of blasting on buried X65 steel pipelines under TNT explosions. Sun et al [45] accurately replicated stress responses to gas explosions through numerical simulation, and Xu et al [46] identified key parameters influencing parallel pipeline safety. Additionally, research has focused on assessing fire risks associated with gas pipeline leakage in urban areas [47,48], and Acton et al [49] highlighted the formation of ground craters resulting from underground gas pipeline ruptures.…”

Section: Research Significancementioning

confidence: 99%

Computational Fluid Dynamics Approach for Predicting Pipeline Response to Various Blast Scenarios: A Numerical Modeling Study

Saifi,

Javaid,

Haleem

et al. 2024

CMES

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Recent industrial explosions globally have intensified the focus in mechanical engineering on designing infrastructure systems and networks capable of withstanding blast loading. Initially centered on high-profile facilities such as embassies and petrochemical plants, this concern now extends to a wider array of infrastructures and facilities. Engineers and scholars increasingly prioritize structural safety against explosions, particularly to prevent disproportionate collapse and damage to nearby structures. Urbanization has further amplified the reliance on oil and gas pipelines, making them vital for urban life and prime targets for terrorist activities. Consequently, there is a growing imperative for computational engineering solutions to tackle blast loading on pipelines and mitigate associated risks to avert disasters. In this study, an empty pipe model was successfully validated under contact blast conditions using Abaqus software, a powerful tool in mechanical engineering for simulating blast effects on buried pipelines. Employing a Eulerian-Lagrangian computational fluid dynamics approach, the investigation extended to above-surface and below-surface blasts at standoff distances of 25 and 50 mm. Material descriptions in the numerical model relied on Abaqus' default mechanical models. Comparative analysis revealed varying pipe performance, with deformation decreasing as explosion-to-pipe distance increased. The explosion's location relative to the pipe surface notably influenced deformation levels, a key finding highlighted in the study. Moreover, quantitative findings indicated varying ratios of plastic dissipation energy (PDE) for different blast scenarios compared to the contact blast (P0). Specifically, P1 (25 mm subsurface blast) and P2 (50 mm subsurface blast) showed approximately 24.07% and 14.77% of P0's PDE, respectively, while P3 (25 mm above-surface blast) and P4 (50 mm above-surface blast) exhibited lower PDE values, accounting for about 18.08% and 9.67% of P0's PDE, respectively. Utilising energy-absorbing materials such as thin coatings of ultra-high-strength concrete, metallic foams, carbon fiber-reinforced polymer wraps, and others on the pipeline to effectively mitigate blast damage is recommended. This research contributes to the advancement of mechanical engineering by providing insights and solutions crucial for enhancing the resilience and safety of underground pipelines in the face of blast events.

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Section: Research Significancementioning

confidence: 99%

Computational Fluid Dynamics Approach for Predicting Pipeline Response to Various Blast Scenarios: A Numerical Modeling Study

Saifi,

Javaid,

Haleem

et al. 2024

CMES

View full text Add to dashboard Cite

show abstract

“…Both approaches have shown good agreements with experimental results providing a better understanding of stress distribution and resultant deformation, pushing innovation in toe cap design. These software's have also been reported to be of outmost importance on the analysis and design of safety systems [32][33][34]. However, the use of commercial software for the analysis of dynamic loadings requires a license that can be expensive, and thus, inaccessible to small/medium size companies.…”

Section: Category Of Footwearmentioning

confidence: 99%

Assessing the Compressive and Impact Behavior of Plastic Safety Toe Caps through Computational Modelling

et al. 2021

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Toe caps are one of the most important components in safety footwear, but have a significant contribution to the weight of the shoe. Efforts have been made to replace steel toe caps by polymeric ones, since they are lighter, insulated and insensitive to magnetic fields. Nevertheless, polymeric solutions require larger volumes, which has a negative impact on the shoe’s aesthetics. Therefore, safety footwear manufacturers are pursuing the development of an easy, low-cost and reliable solution to optimize this component. In this work, a solid mechanics toolbox built in the open-source computational library, OpenFOAM®, was used to simulate two laboratory standard tests (15 kN compression and 200 J impact tests). To model the polymeric material behavior, a neo-Hookean hyper-elasto-plastic material law with J2 plastic criteria was employed. A commercially available plastic toe cap was characterized, and the collected data was used for assessment purposes. Close agreements, between experimental and simulated values, were achieved for both tests, with an approximate error of 5.4% and 6.8% for the displacement value in compression and impact test simulations, respectively. The results clearly demonstrate that the employed open-source finite volume computational models offer reliable results and can support the design of toe caps for the R&D footwear industry.

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Numerical study and safety spacing of buried parallel gas pipelines: A study based on TNT equivalent method

Guo

Liu

Wang

et al. 2018

International Journal of Pressure Vessels and Piping

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Numerical simulation on foam ceramic blasting block device under the action of explosion transform

Cited by 4 publications

References 1 publication

Computational Fluid Dynamics Approach for Predicting Pipeline Response to Various Blast Scenarios: A Numerical Modeling Study

Computational Fluid Dynamics Approach for Predicting Pipeline Response to Various Blast Scenarios: A Numerical Modeling Study

Assessing the Compressive and Impact Behavior of Plastic Safety Toe Caps through Computational Modelling

Numerical study and safety spacing of buried parallel gas pipelines: A study based on TNT equivalent method

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