Failure Modes Behavior of Different Strengthening Types of RC Slabs Subjected to Low-Velocity Impact Loading: A Review

Al-Dala’ien, Rayeh Nasr; Syamsir, Agusril; Bakar, Mohd Supian Abu; Usman, Fathoni; Abdullah, Mohammed Jalal

doi:10.3390/jcs7060246

Cited by 17 publications

(5 citation statements)

References 78 publications

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“…For example, Yilmaz et al (Yılmaz et al 2020) found that the impact load decreased as the impactor velocity decreased for RC slabs with different support types. Similarly, Al-Dala'ien et al (Al-Dala'ien et al 2023) reported that the impact load decreased as the impactor velocity decreased for RC slabs with different reinforcement ratios. Moreover, Figure 17 depicts the contour plots of impactor velocity vs. thickness with displacement.…”

Section: Proposed Response Surface Formulationmentioning

confidence: 84%

Kinetic response of reinforced concrete slabs to high-velocity projectile impact-robust numerical and statistical driven modeling techniques

Babiker,

Abbas,

Khan

et al. 2024

Lat. Am. j. solids struct.

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This research explores the dynamic responses of reinforced concrete (RC) slabs under high-velocity impacts. The study utilizes advanced numerical simulations to investigate the effects of varied impact loading and slab depths, unveiling complex rate-dependent behaviors (i.e., impact forces, reactions, accelerations, and displacements) across a diverse range of velocities. The alignment of simulation results with experimental data validates the robustness and accuracy of the employed approach. Additionally, an analytical model predicting the load-carrying capacity and deflection of these slabs under high-velocity loads is proposed. The results indicated that higher loading rates correlate with increased forces and damage until perforation. Analytical models exhibit strong performance within a ±10% error margin, and response surface analysis quantifies the impactor velocity's influence on load for a constant thickness. Overall, this investigation sheds light on the dynamic complexities of RC slabs subjected to high-velocity impacts, providing valuable insights for structural design considerations.

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Section: Proposed Response Surface Formulationmentioning

confidence: 84%

Kinetic response of reinforced concrete slabs to high-velocity projectile impact-robust numerical and statistical driven modeling techniques

Babiker,

Abbas,

Khan

et al. 2024

Lat. Am. j. solids struct.

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“…The relationship between the wall and any given surface is established through contact interaction, utilizing contact models along with the penalty contact approach as a mechanical constraint formulation. It is important to highlight that the cohesive behavior is characterized by the traction-separation relationships that are included as default in Abaqus [57][58]. The friction coefficient assigned to the brick-to-mortar contact is set at 0.75.…”

Section: Numerical Modelingmentioning

confidence: 99%

Damage Prediction of Monolithic and Non-Monolithic Braced Unreinforced Brick Masonry Walls under Explosion Loadings

Anas,

Al-Dala’ien,

Alam

et al. 2023

E3S Web Conf.

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Numerous unreinforced masonry (URM) structures worldwide face greater vulnerability to direct threats like earthquakes, wind, impact, or explosions compared to reinforced concrete and steel structures. Given the current worldwide environment characterized by dominance and extremism, the task of safeguarding structures, especially from explosive detonations, presents a growing and crucial obstacle for engineers and researchers. The Masonry Society (TMS) and the Federal Emergency Management Agency (FEMA) have recognized that the primary cause of material damage resulting from explosions is the collapse of walls made of URM. The recent catastrophic explosion at the Beirut seaport in Lebanon, the largest of its kind, serves as a stark reminder to town planners, architects, and structural designers. This tragic incident resulted in an immense loss of building infrastructure overall and specifically affected load-bearing masonry structures, leading to severe injuries and casualties. It underscores the urgent need for comprehensive attention and strategic measures in addressing the vulnerabilities inherent in these structures. This research study explores the response of URM walls, constructed with clay bricks, to out-of-plane blast forces. The walls are braced with either monolithic or non-monolithic transverse walls, and a three-dimensional micro-modeling approach is employed. The analysis is conducted using the Abaqus software, which utilizes the finite element method. Alongside the braced walls, the study also examines a free-standing URM wall without transverse walls. The exposed face of the walls is subjected to peak reflected pressures of 0.38 and 1.01 MPa, generated by explosive charges weighing 4.34 and 7.49 kg-TNT at scaled distances of 2.19 and 1.83 m/kg1/3, respectively. The Concrete Damage Plasticity (CDP) model, which incorporates the influence of strain rate, is utilized to simulate the behavior of masonry under blast loads. Comparisons are made between the computed damage patterns of a wall reinforced with monolithic transverse walls and the experimental results found in existing literature, revealing a notable level of agreement. The influence of both monolithic and non-monolithic joints on the performance of the exposed wall is thoroughly examined and contrasted with one another, as well as with the performance of a free-standing wall. The research indicates that non-monolithic joints between the exposed wall and transverse bracing walls exhibit a greater extent of damage to the bracing walls, as this is predominantly influenced by the response of the exposed wall itself.

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“…The utilization of non-linear FEA, on the other hand, poses distinct obstacles that must be addressed. These challenges encompass the careful selection of an appropriate mesh specific to the problem at hand, the capability to evaluate the stability of the solution procedure, and the comprehensive assessment of all potential sources of errors attributable to modeling assumptions [10,11,[24][25].…”

Section:  Structural Responsementioning

confidence: 99%

Numerical Modeling of Steel Column for its Response to Large Explosive Loading using CEL-FEM Approach

Anas,

Alam,

Kanaan

et al. 2023

E3S Web Conf.

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In the past few decades, there has been a growing public concern regarding the protection of infrastructures against extreme events, specifically explosive detonations. Traditional structural design has predominantly focused on accounting for gravity, seismic, and wind loads as the primary factors to consider. The rise in subversive attacks has led to a heightened focus on blast load and its impact on infrastructures. Unconfined, surface explosions are a common type of terrorist attack that occurs outside of buildings. This has necessitated a greater understanding of the effects these explosions can have on structures. A comprehensive numerical model was created in Abaqus for a steel column measuring 2.41m in length and having a W150x24 cross-section. The model was then subjected to a powerful explosion equivalent to 100kg-TNT, with a standoff distance of 10.30m. To achieve this, an Eulerian-Lagrangian approach coupled with the Finite-element method (CEL-FEM) was employed. A thorough investigation was conducted by modifying the explosion's altitude (i.e., blast height), and the subsequent dynamic responses were analyzed and discussed. The outcomes of this investigation significantly enhance our comprehension of how steel columns respond when subjected to intense explosive forces.

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Failure Modes Behavior of Different Strengthening Types of RC Slabs Subjected to Low-Velocity Impact Loading: A Review

Cited by 17 publications

References 78 publications

Kinetic response of reinforced concrete slabs to high-velocity projectile impact-robust numerical and statistical driven modeling techniques

Kinetic response of reinforced concrete slabs to high-velocity projectile impact-robust numerical and statistical driven modeling techniques

Damage Prediction of Monolithic and Non-Monolithic Braced Unreinforced Brick Masonry Walls under Explosion Loadings

Numerical Modeling of Steel Column for its Response to Large Explosive Loading using CEL-FEM Approach

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