Experimental Investigation of Selected Explosion Parameters for Numerical Model Validation

Barnat, W.; Gieleta, Roman; Niezgoda, T.

doi:10.5604/12314005.1138261

Cited by 5 publications

(4 citation statements)

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“…Roadside safety barriers are implements used to protect cars from dangers alongside the roads, running into dangerous areas such as steep slopes, or redirecting cars. 19–21 This equipment must be designed efficiently to redirect cars to the road without severe damage to cars and occupants and prevent another crash, assuming there are other cars on the main roads. Therefore, roadside barriers such as guardrails must absorb as much as possible the impact energy due to crashes while maintaining their integrity.…”

Section: Introductionmentioning

confidence: 99%

Crashworthiness analysis of a composite guardrail under impact loading

Mohammadi

Haghighi‐Yazdi

Safarabadi

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part L:

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Road safety barriers prevent cars from deviating from the roads. Guardrails as common roadside safety barriers protect cars from dangers alongside the roads, such as steep slopes and trees, and redirect traffic from road hazards. Conventional guardrails are generally made of metal or concrete. Although steel guardrails absorb a high amount of crash energy by deformation, these types of guardrails have short lifecycles of less than 15 years. Due to their unique properties, composite materials are potential candidates to use as guardrails. The present study considers the three types of guardrails (steel, composite, and fiber metal laminate (FML)), and the crash model is developed according to standards. LS-DYNA software is employed to simulate and conduct the crash test In the first stage, impact simulation is performed on a carbon/epoxy composite plate. In the next step, impact simulation is performed on a metal fiber multilayer (FML) plate with carbon fiber and aluminum metal. Then, the crash test on the steel guardrail is completely simulated. These three stages are performed to verify the proposed model. In the next stage, the crash test for a carbon/epoxy composite guardrail is simulated, and the effect of different parameters is investigated. Finally, a crash test on the FML guardrail with carbon fibers and steel metal is simulated. Two FML samples with [CE/Steel/CE] layups are considered. The absorbed energy, specific energy, and acceleration severity index (ASI) for all different guardrails are obtained and compared to determine the optimum guardrail regarding energy absorption, mass, and ASI parameters. Results reveal that sample FML-B guardrail is the best of the three guardrail types, with the highest specific energy absorption and lower ASI parameter.

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Section: Introductionmentioning

confidence: 99%

Crashworthiness analysis of a composite guardrail under impact loading

Mohammadi

Haghighi‐Yazdi

Safarabadi

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part L:

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“…The metallic foam consists of a matrix of aluminum filled with pockets of air. Because of its long, plastic plateau in compression, metallic foam allows high energy absorption at a nearly constant stress level, making it an ideal material for mitigating the effects of explosive loads on a structural system [11] [12].…”

Section: Introductionmentioning

confidence: 99%

Review of Blast Waves Analysis, Design, Structural and Materials Responses

Taha¹,

Osman²,

Zahran³

2023

OJSST

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With the increasing threat of terrorism and the rapid development of technology, the probability of accidental explosions such as incident blasts, mine explosions and terrorist attacks has increased. So, protecting important structures against terroristic attacks is a very important topic as terrorist attacks have increased and developed a lot these days especially using blast loads. This study is Carried out to cover the historical background and extensive literature review of the available previous research works focusing on the blast environment characteristics, fundamentals of blast loading and description of the methods used to predict blast loadings. Moreover, the research also covers a literature review on the response of structures subjected to blast loads and material behavior considering high strain rates. Hence blast loading effects can be predicted and utilized in improving the design of important structures.

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“…In the case where load parameters are considered, analytical methods are often used [13]. These methods are based on many complex formulas and experiments [14,15].Additionally, analytical methods are consistent when a pressure wave hit into a flat barrier usually oriented perpendicularly in front of the charge. It is advisable to verify numerical investigations with experimental studies [16].…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical study of influence of incidence angle of shock wave created by explosive charge on the steel plate

Barnat

2014

Bulletin of the Polish Academy of Sciences: Technical Sciences

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Abstract. This paper presents experimental and numerical studies on influence of an incidence angle of the shock wave on a steel plate. The problem of interaction between the wave front and a barrier is important from the point of view of protection the crew of armored vehicles. One way of remedying the harmful effects of impacts of the shock wave is the reflection wave of the barrier set at an angle to the face of the wave. The article presents the numerical and experimental approach to the subject. The numerical part presents four models in which the plate was set at angles 0• , 15• , 30• , 45• . In each case, the plate was loaded by a wave formed after the explosion 2 kg of TNT. In the experimental part the results are presented from an experiment in which the wave was formed from 2 kg TNT detonation at a distance of 0.4 m in parallel to the steel plate.

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Experimental Investigation of Selected Explosion Parameters for Numerical Model Validation

Cited by 5 publications

References 0 publications

Crashworthiness analysis of a composite guardrail under impact loading

Crashworthiness analysis of a composite guardrail under impact loading

Review of Blast Waves Analysis, Design, Structural and Materials Responses

Experimental and numerical study of influence of incidence angle of shock wave created by explosive charge on the steel plate

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