Experimental response of high strength steels to localised blast loading

McDonald, Brodie; Bornstein, Huon; Langdon, G.S.; Curry, R.J.; Daliri, Ali; Orifici, Adrian C.

doi:10.1016/j.ijimpeng.2018.01.012

Cited by 39 publications

(14 citation statements)

References 15 publications

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“…Besides oscilloscope, laser displacement transducers could be used for translation measurements. e front of the pendulum consists of the steel frame onto which the specimen is clamped [56][57][58]. Typical experimental setup for blast experimentation using ballistic pendulum system can be seen in Figure 1 in [56].…”

Section: Blast Pendulum Systemsmentioning

confidence: 99%

An Overview of Methods for Blast Load Testing and Devices for Pressure Measurement

Draganić

Varevac

Lukić

2018

Advances in Civil Engineering

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A brief review of experimental methods for testing blast effects on structures is presented. Methods are classified in four groups: field tests, shock tubes, pendulum systems, and new techniques (blast simulator). Description of each method is given together with overall specification of possible instruments used in each test. In today’s modern era of computers which are becoming powerful tool implemented in all aspects of life and also scientific research, comparison of experimental and numerical techniques is also given. Comparison of data obtained from different experimental methods show that careful planning and execution leads to reliable results in terms of pressure, impulse, stress, and damage quantification.

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Section: Blast Pendulum Systemsmentioning

confidence: 99%

An Overview of Methods for Blast Load Testing and Devices for Pressure Measurement

Draganić

Varevac

Lukić

2018

Advances in Civil Engineering

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“…With detailed insight into the strength and ductility of IRHA and HHA steel across a range of temperatures and strain rates, the constitutive models produced in Section 3 can be used to investigate the response of each material against real-world threats from ballistic and blast loading. The accuracy of the presented material characterisation approach is evaluated by comparing the performance of IRHA and HHA steels to the ballistic tests conducted by Showalter [5] and the blast testing conducted by McDonald [7]. Fig.…”

Section: Protective Capacitymentioning

confidence: 99%

“…Blast tests were conducted by McDonald et al [7] to compare the deformation and rupture performance of a range of armour steels including IRHA and HHA. These tests provided 21 experimental conditions to evaluate capability of the current constitutive model to capture the deformation behaviour of the two materials.…”

Section: Blast Performancementioning

confidence: 99%

“…A comparison of four grades of armour steel under localised blast loading was presented by McDonald [7] and showed that the normalised deformation resistance of an IRHA grade exceeded that of two higher yield strength RHA grades and approached that provided by HHA, regardless of the 20% higher tensile yield strength. While the strain hardening of the IRHA material was highlighted as a major contributor to its high deformation resistance [7], the influence of strain rate and temperature on the different armour steels protective capacity was not described.…”

Section: Introductionmentioning

confidence: 99%

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High strain rate and high temperature response of two armour steels: Experimental testing and constitutive modelling

et al. 2018

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Under ballistic impact or blast loading, the high strain rate and high temperature behaviour of armour steels is key to their response to a given threat. This experimental and numerical investigation examines the tensile response of a class 4a improved rolled homogenous armour steel (IRHA) and a high hardness armour steel (HHA). Cylindrical tensile specimens were tested at a range of strain rates from 0.001 s-1 to 2700 s-1. Quasi-static, elevated temperature tests were performed from room temperature up to 300° C. While the HHA is strain rate insensitive, the IRHA displays a significant increase in strength across the range of loading rates reducing the ultimate strength difference between the materials from 19% at 0.001s-1 to 4.6% at 2700s-1. An inverse numerical modelling approach for constitutive model calibration is presented, which accurately captured the dynamic material behaviour. The modified Johnson-Cook strength and Cockcroft-Latham (C-L) fracture models were capable of predicting the ballistic limit of each material to within 5% of the experimental result and to within 10% for deformation under blast loading. The blast rupture threshold of both materials was significantly over-estimated by the C-L model suggesting stress state or strain rate effects may be reducing the ductility of armour steel under localised blast loading.

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“…Langdon et al [23] evaluated the effect of material properties on the dynamic response of plates subjected to air explosions. Furthermore, McDonald et al [24] experimentally investigated the dynamic response of four high-strength and armor-grade steels to blast load, in terms of deformation resistance and rupture threshold at different standoff distances. Additionally, Guangyong et al [25] studied the effects of introducing face-sheet materials and configurations on the blast resistance of sandwich-panel structures.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis for Critical Structures Protection against Blast Loading Using Metallic Panels

Alogla

Helal

Elshafey³

et al. 2020

Applied Sciences

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The need for building protection against blast loads is a crucial issue nowadays due to the escalating threat of terrorist attacks, which affect people’s lives and critical structures. Consequently, design of protective panels to segregate building façades from the effect of a nearby explosion is required. Such design mainly depends on the ability of protective panels to mitigate and diffract the blast wave before reaching building façades. Five protective panel models with different designs, referred to as the Combined Protection System (CPS), are introduced in this paper. The main objective of this research was to achieve a design that could sustain a blast load with minimum plastic deformations. The introduced CPS designs included two steel plates linked by connector plates. The CPS dimensions were 3 m × 3 m × 0.35 m, representing length, width, and height, respectively. After that, the successful panel design was supported by placing these panels onto a masonry wall in different configurations. The protective panels were tested against 50 kg of trinitrotoluene (TNT) with a standoff distance of one meter. The final run of the optimum model was carried out using a blast load equivalent to 500 kg of TNT. The air–structure interactions were simulated using finite element analysis software called “ANSYS AUTODYN”, where the deformation of the panel was the governing parameter to evaluate the behavior of different designs. The analysis showed minimum deformation of the CPS design with vertical and horizontal connecting plates in a masonry wall distanced at 500 mm from the panel. However, the other designs showed promising results, which could make them suitable for critical structural protection on different scales.

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Experimental response of high strength steels to localised blast loading

Cited by 39 publications

References 15 publications

An Overview of Methods for Blast Load Testing and Devices for Pressure Measurement

An Overview of Methods for Blast Load Testing and Devices for Pressure Measurement

High strain rate and high temperature response of two armour steels: Experimental testing and constitutive modelling

Numerical Analysis for Critical Structures Protection against Blast Loading Using Metallic Panels

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