Optimization of shock response within a military vehicle space frame

Thota, Jagadeep; O’Toole, Brendan; Trabia, Mohamed B.

doi:10.1007/s00158-011-0685-0

Cited by 4 publications

(4 citation statements)

References 23 publications

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“…The cube was made of 12 hollow square-sectioned members that are connected by joints. This arrangement follows a proposed design of a military vehicle space frame [17], which was developed to allow speedy exchange of damaged member of the space frame.…”

Section: Lab-scale Space Framementioning

confidence: 99%

Computational prediction of low impact shock propagation in a lab-scale space bolted frame structure

Thota¹,

Trabia²,

O’Toole³

2015

Int. J. CMEM

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Bolted space frames are usually used to allow easy assembly and disassembly, as well as replacing defective components. Although the performance of bolted space frame structures under static loads is well understood, research on the shock propagation through these frames is limited. The focus of this study is to understand shock propagation through space frames, which is a critical factor when assessing the functionality of these frames. In this research, a lab-scale space frame structure, comprising hollow square members that are connected together through bolted joints is constructed. Non-destructive impact testing is carried out on this structure and the resulting acceleration signals at various locations are recorded. The objective of this work is to develop a finite element (FE) modeling approach that can reasonably replicate experimental results.

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Section: Lab-scale Space Framementioning

confidence: 99%

Computational prediction of low impact shock propagation in a lab-scale space bolted frame structure

Thota¹,

Trabia²,

O’Toole³

2015

Int. J. CMEM

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“…Only a few studies performed by Gurumurthy (2008), Johnson and Basudhar (2015) and Trajkovski et al (2016) directly compared the plate shape influence on their blast response and explicitly pointed out that V-shaped plates have best performances. Although in a few studies shape optimization analyses of blast loaded structures (Argod et al, 2010; Gurumurthy, 2008; Johnson and Basudhar, 2015; Nayak et al, 2013; Thota et al, 2011) were performed, concise and comprehensive analyses of the individual contribution of the most important parameters on blast response of V-shaped armour plates are needed.…”

Section: Introductionmentioning

confidence: 99%

Parametric analysis study of blast loaded armour V-plates

Trajkovski

Kunc

Prebil

2017

International Journal of Protective Structures

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Continuous improvement in the hull floor of light armoured vehicles in terms of landmine response and crew safety is required among other things, in order to meet higher demands in the market and to obtain a product safety certificate. Previous research studies have shown that V-shaped hull floors of light armoured vehicles have a better response to blast loading in terms of saving the lives of vehicle crews or reducing the number of injuries. For this reason, parametric and design optimization analyses of V-shaped hull floors play an important role in achieving an optimal, safe and cost-effective light armoured vehicle design. However, this kind of structural optimization is complex, involving a multidisciplinary fluid-structure interaction processes, as well as large structural deformations. This article presents the results of the metamodelbased parametric analysis of blast loaded armour V-plates. The contribution of most important variable parameters such as plate angle, plate thickness, explosive mass and stand-off distance to blast loading and blast response parameters was examined using a combined smooth particle hydrodynamic-finite element numerical model. The results showed that the plate angle has the greatest impact on all response parameters of the metamodel, followed by the stand-off distance and plate thickness.

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“…In order to evaluate the damage to a vehicle and its occupants resulting from a landmine blast impulse and to determine the vulnerability of the vehicle, finite element analysis has been widely used recently. 3–10 Erdik et al 11 studied a parametric approach for quantification which used the multiple-material (MM) arbitrary Lagrangian–Eulerian (ALE) algorithm. Subsequently, they presented the blast response of a vehicle subjected to a landmine blast under the front left wheel to verify the accuracy of this method.…”

Section: Introductionmentioning

confidence: 99%

“…The kinematic and structural responses (including large-scale rotation and deformation, buckling, plastic yielding, failure initiation, fracture and fragmentation) of the HMMWV were regarded as the injury criteria. The aim of the work by Thota et al 24, 25 was optimization of the shock response in the space frame and space frame joints of the armoured vehicle.…”

Section: Introductionmentioning

confidence: 99%

Modelling and analysis of the vehicle underbody and the occupants subjected to a shallow-buried-mine blast impulse

Zhang

Zhou

Wang

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part D:

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When a charge is ignited at the bottom of a vehicle, the underbody and the occupants are the most vulnerable. The protection of the vehicle underbody is still a significant problem in the environment of a buried-mine blast impulse. The first part of this study presents an algorithm that can be used to simulate a shallow-buried-mine blast. Models using the multiple-material arbitrary Lagrangian–Eulerian algorithm and the initial-impulse mine algorithm respectively were constructed on the basis of experiments carried out by Anderson et al. The accuracy and superiority of the initial-impulse mine algorithm were proved by comparing the results for the jump velocity and the computation time. The second part introduces a blast experiment on a full-scale armoured vehicle. The occupant was represented by a Hybrid III 50th-percentile adult-male dummy. A numerical model was established using the initial-impulse mine method; the seat position represented the worst-case situation, which was same as for the experiments. A comparison of the experimental data and the simulation results, which include the peak acceleration of the floor and the force to which the dummy’s tibia is subjected, showed good agreement.

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Optimization of shock response within a military vehicle space frame

Cited by 4 publications

References 23 publications

Computational prediction of low impact shock propagation in a lab-scale space bolted frame structure

Computational prediction of low impact shock propagation in a lab-scale space bolted frame structure

Parametric analysis study of blast loaded armour V-plates

Modelling and analysis of the vehicle underbody and the occupants subjected to a shallow-buried-mine blast impulse

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