Scaling the response of armor steel subjected to blast loading

Fu, Tiaoqi; Zhang, Ming; Zheng, Qichen; Zhou, Di; Sun, Xiaodong; Wang, Xianhui

doi:10.1016/j.ijimpeng.2021.103863

Cited by 27 publications

(9 citation statements)

References 17 publications

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“…Various materials are used as blast-resistant materials. Different types of steel [4,[12][13][14][15], composite materials [16,17], foams [18], and concrete [19] are among the most commonly utilized materials. The level of protection and weight of each of these materials varies.…”

Section: Methodsmentioning

confidence: 99%

FEM Analysis of Anti-Mining Protection of Armored Vehicles

Pešić¹,

Jović²,

Milovanović³

et al. 2022

Applied Engineering Letters

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The safety of the troop in an armored vehicle is paramount. The most serious threat to armored vehicles is a buried charge explosion or an improvised explosive device. The use of numerical approaches in the validation of armored vehicles minimizes the number of prototypes needed and speeds up the design process. This research focuses on blast simulation utilizing the ConWep (which stands for conventional weapon) method for STRENX armor steel used for blast protection in ALM (which stands for antilandmine) vehicles. The plate is modeled as a deformable solid with the Johnson-Cook plasticity model. In this paper protective plates were examined in order to determine which geometry gives the best protective conditions for the troop in an armored vehicle. Three different geometries were numerically tested, and two of them represent combined geometry. The maximal value of the plastic strain and maximal value of the vertical displacement of the central node on the protective plate was chosen as the parameters to represent the obtained results.

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Section: Methodsmentioning

confidence: 99%

FEM Analysis of Anti-Mining Protection of Armored Vehicles

Pešić¹,

Jović²,

Milovanović³

et al. 2022

Applied Engineering Letters

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“…A Fortran vectorized user-material subroutine (VUMAT) program considering strain rate, stress status and temperature effect which can effectively predict the dynamic response of metallic materials was developed by Li et al [10]. Fu et al [11] developed a model that can accurately achieve the scaling of the dynamic response of a steel plate under blast loading. Yang et al [12] proposed a new method, based on a single-degree-of-freedom (SDOF) system with appropriate modi cation for strain-rate effect to calculate the dynamic strength of mild steel in the analysis of reinforced concrete structures subjected to air-blast loading.…”

Section: Introductionmentioning

confidence: 99%

Strain Rate Analysis of Efficient Honeycomb Sandwich Panels under Blast Load

Sawant

Patel

2023

Preprint

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Honeycomb sandwich panels are investigated for a broad range of areas as protective structures that can withstand blast loading. The advantage of these panels is that they are light in weight when compared to solid metal plates due to the hollow core and have high energy absorption capabilities. Due to their high bending stiffness, honeycomb sandwich panels have found applications in aerospace, automotive, marine, defense, and railway industries. In order to analyze the effect of blast loading on sandwich panels the experiments that need to be conducted are costly as well as time-consuming. Also, while conducting experiments with explosives, human safety is a major concern. Taking the aforementioned parameters into consideration, modeling and simulation of honeycomb sandwich panels is the better alternative. ABAQUS software has been used in this paper to study the behavior of metallic honeycomb sandwich panels (MHSP) with squared, hexagonal, and circular cores when subjected to blast loads of different kilograms of trinitrotoluene (TNT). The obtained simulation results show that circular core has higher blast resistance as compared to hexagonal and square cores. With the aim of optimizing blast protection characteristics of the sandwich model, effect of gel-filling and addition of Aluminium foamto hollow honeycomb core of the sandwich panelswas investigated.The face plate deflection and energy absorption capacity were found to have improved after these additions. Mass evaluation pertaining to reduction in plate deflection versus increase in weight of the sandwich panel after addition of gel and foam was also performed. The influence of strain rate on the deflection of blast-loaded sandwich panels was also studied. It was found that higher strain rates gave favourable results i.e., lower deformation values. Lastly, energy absorption study of all the various configurations of the sandwich panel was performed.

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“…Similar model tests have been extensively utilized in various engineering fields, such as ship collisions, 4,5 impact of aircraft, [6][7][8] dynamic responses of automobiles, 9,10 running stability of high-speed trains, [11][12][13] vibration characteristics of bridges, 14 and explosive impact of bullets. 15,16 Wan et al conducted scaled model tests of ship-pier collisions to evaluate the performance of reinforced concrete piers against ship collisions. 5 Adams et al established 1/5th, 1/ 10th, 1/15th, and 1/20th-scale models of an aircraft fuselage to determine the fuselage crashworthiness level.…”

Section: Introductionmentioning

confidence: 99%

A mechanical equivalence similitude method for dynamic responses of high-speed train middle vehicles in a collision

Wang

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part F:

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Predicting the dynamic behavior of train collisions using similitude theory is a valuable design tool. However, several limitations and difficulties persist when designing a similar train model. This study proposes a mechanical equivalence similitude method when a train crashes into a rigid obstacle longitudinally, which can be used to establish similitude laws and predict the dynamic responses of a full-scale high-speed train middle vehicle. This method includes impact force equivalence (IFE) and finite-element stiffness equivalence (FESE). The aim is to overcome the insufficient accuracy of establishing a similar train model using traditional similitude methods. First, the similitude laws of the end energy absorber and the vehicle body were deduced. Subsequently, the 1/8th equivalent similar middle vehicle model of the high-speed train was established. The IFE method was employed to design a 1/8th equivalent similar model of the end energy absorber. Based on the FESE method, a 1/8th equivalent similar model of the middle vehicle body was built. Finally, the accuracy and effectiveness of a similar train model were validated through numerical simulations and tests. Comparing the results of the prototype, the errors of the dynamic responses were less than 4%, indicating that the mechanical response equivalence similitude method is effective for constructing a similar train model.

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Scaling the response of armor steel subjected to blast loading

Cited by 27 publications

References 17 publications

FEM Analysis of Anti-Mining Protection of Armored Vehicles

FEM Analysis of Anti-Mining Protection of Armored Vehicles

Strain Rate Analysis of Efficient Honeycomb Sandwich Panels under Blast Load

A mechanical equivalence similitude method for dynamic responses of high-speed train middle vehicles in a collision

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