Effect of the blockout crushability on the response of guardrail post subjected to lateral impact

Sassi, Abdelmonaam

doi:10.1080/13588265.2013.825367

Cited by 3 publications

(10 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Over the past three decades, computational modeling of dynamic pile-soil interaction in crash test simulations has significantly evolved, as evidenced by the literature from the late 1990s to the present [28][29][30][31][32][33][34]. One of the pioneering computational methods for soil modeling emerging in this domain employed a technique based on lumped nonlinear springs [35,36].…”

Section: Lumped Parameter Methodsmentioning

confidence: 99%

“…Geotechnics 2024, 4, FOR PEER REVIEW 21 In addition to these established techniques, a modified subgrade reaction method has been introduced recently [29,30]. This simplified approach conceptualizes the soil continuum as a combination of a mass (representing soil inertia), a spring (soil stiffness), and a dashpot (soil damping).…”

Section: Underlying Philosophymentioning

confidence: 99%

“…The modified subgrade reaction method defines three key parameters-lumped mass, spring stiffness, and damping factor-to characterize the soil. These parameters are depth-and density-dependent, tailoring the model to the specific conditions of each soil layer [29,30].…”

Section: Underlying Philosophymentioning

confidence: 99%

See 2 more Smart Citations

A State-of-the-Art Review on Computational Modeling of Dynamic Soil–Structure Interaction in Crash Test Simulations

Yosef,

Faller,

Fang

et al. 2024

Geotechnics

View full text Add to dashboard Cite

The use of nonlinear, large-deformation, dynamic finite element analysis (FEA) has become a cornerstone in crash test simulations, playing a pivotal role in evaluating the safety performance of critical civil infrastructures, including soil-embedded vehicle barrier systems. This review paper offers a detailed examination of numerical modeling methodologies employed for simulating dynamic soil–structure interactions in crash test simulations, with a particular focus on dynamic impact pile–soil interaction. This interaction is a critical determinant in assessing the effectiveness of soil-embedded barrier systems during vehicular impacts. Our extensive review methodically categorizes and critically evaluates four prevalent modeling methodologies: the lumped parameter method, the subgrade reaction method, the modified subgrade reaction approach, and the direct or mesh-based continuum method. We explore each methodology’s underlying philosophy, strengths, and shortcomings in accurately simulating the dynamic interaction between soil and piles under impact loading. This technical review aims to provide a thorough understanding of the critical and distinctive aspects of modeling soil’s dynamic responses under impact loading conditions. Moreover, this paper is envisioned to serve as a foundational reference for future research endeavors, steering the advancement of innovative simulation techniques for tackling the dynamic impact soil–structure interaction problem.

show abstract

Section: Lumped Parameter Methodsmentioning

confidence: 99%

Section: Underlying Philosophymentioning

confidence: 99%

See 1 more Smart Citation

A State-of-the-Art Review on Computational Modeling of Dynamic Soil–Structure Interaction in Crash Test Simulations

Yosef,

Faller,

Fang

et al. 2024

Geotechnics

View full text Add to dashboard Cite

show abstract

“…The results of the postsoil interaction simulation agreed well with the physical test. 23 The guardrail blockout can be made of a steel Wbeam or a rectangular parallelepiped block of wood. In the test conducted by TTI, 21 the blockout was built of a wooden parallelepiped block 360 mm high with a cross section measuring 150 mm by 200 mm.…”

Section: Guardrail Model: Posts and W-beamsmentioning

confidence: 99%

“…5,21,[26][27][28] The model was calibrated with a side test and a frontal test and showed very satisfactory results. 23 To increase the confidence in the study, some preliminary simulations of the collision between the truck model and the guardrail were carried out to evaluate the interaction with the guardrail and the kinematics of the truck. These initial trials showed severe unexpected deformation of the tires, the rims, and part of the fender.…”

Section: Guardrail Model: Posts and W-beamsmentioning

confidence: 99%

Influence of tire blowout on the collision of a light pickup truck with a guardrail safety barrier

Sassi

Tarlochan

2019

Proceedings of the Institution of Mechanical Engineers, Part D:

Self Cite

View full text Add to dashboard Cite

This main purpose of this work is to investigate, through a finite-element simulation, the effect of tire blowout on the collision of a light pickup truck with a guardrail, at a speed of 100 km/h. The finite-element model was calibrated against a dynamic test carried out by the Texas Transportation Institute. Four cases of individual tire blowout were considered. Among these, the case of the left front tire was found to be the most critical one, resulting in a pitch angle of 24°, a roll angle of 12°, and a yaw angle of 30°. For this critical case, the results showed that the deflated tire trapped in the guardrail, which created more interaction between the vehicle and the guardrail beam. These challenging crash conditions were found to be more crucial for the stability of the pickup compared with the fully inflated tire scenario.

show abstract

Effect of crushable blockouts on a full-scale guardrail system

Sassi

Ghrib

2016

International Journal of Crashworthiness

View full text Add to dashboard Cite

Effect of the blockout crushability on the response of guardrail post subjected to lateral impact

Cited by 3 publications

References 12 publications

A State-of-the-Art Review on Computational Modeling of Dynamic Soil–Structure Interaction in Crash Test Simulations

A State-of-the-Art Review on Computational Modeling of Dynamic Soil–Structure Interaction in Crash Test Simulations

Influence of tire blowout on the collision of a light pickup truck with a guardrail safety barrier

Effect of crushable blockouts on a full-scale guardrail system

Contact Info

Product

Resources

About