Assessment of structural response of an existing structure under blast load using finite element analysis

Ibrahim, Yasser E.; Nabil, Marwa

doi:10.1016/j.aej.2019.11.004

Cited by 21 publications

(8 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Use of ABAQUS software was selected for this study. Due to the use of explosion in analysis the time duration of analysis is of fraction of seconds and thus the element type used in this analysis is 8-noded continuum (brick) elements with reduced integration (C3D8R) for air blast and EC3D8R for coupled eulerian lagrangian domain analysis (Ibrahim and Nabil, 2019). The comparison of blast impact on a pier is observed in two different cases, both for air blast and for partially submerged pier under the effect of blast loading.…”

Section: Analytical Approachmentioning

confidence: 99%

See 1 more Smart Citation

Structural Response Of A Slotted Bridge Pier Under Blast Loading Using Finite Element Analysis

R.Patel¹

2021

TURCOMAT

View full text Add to dashboard Cite

Bridge pier is a crucial part for the transportation in marine structures. Scouring is a major cause for the failure of the pier. slot among the other countermeasures increases the efficiency of scour reduction and minimizes the failure due to scour.as we provide the slot; the strength of the pier reduces compared to the conventional pier. change in reinforcement pattern in slotted bridge pier changes the behavior of the pier under similar loading conditions. blast occurrence has increased in recent times and rehabilitation of a structure and improvement of strength against explosion is necessary in structure. this paper studies the behavior of slotted bridge pier under blast loading and compares theoretical and analytical aspects for the same. Design criteria for blast load according to NCHRP 12-72 are followed to carry out theoretical load response of the pier under blast loading. Analytically the behavior of pier is checked using coupled eulerian lagrangian approach using ABAQUS software. a detailed eulerian domain and slotted pier with reinforcement is assembled in ABAQUS to analyze the behavior of pier under explosion using TNT of 100kg at a scaled distance of 4ft for the period of 0.02seconds. this design gave better result in terms of mitigating effects of blast on slotted bridge pier.

show abstract

Section: Analytical Approachmentioning

confidence: 99%

“…An external blast wave is a phenomenon where surrounding atmosphere gets compressed due to the outward effect of the explosion and gets pushed back (Ibrahim and Nabil, 2019). As the wave propagates, the front portion is known as shock front and it has more pressure compare to the back region of the wave(El-Ghorab, 2013).…”

Section: Introductionmentioning

confidence: 99%

Structural Response Of A Slotted Bridge Pier Under Blast Loading Using Finite Element Analysis

R.Patel¹

2021

TURCOMAT

View full text Add to dashboard Cite

show abstract

“…Li et al [24] developed a refined FE model using LS-DYNA to simulate the blast response of CFRP-retrofitted RC columns by modifying the parameters to consider the strain rate effect of CFRP; good agreement was achieved between the numerical and testing results. Ibrahim and Nabil [25] constructed a detailed 3D FE model for a six-story RC framed structure using ABAQUS package to investigate its response to blast charges at several standoff distances.…”

Section: Introductionmentioning

confidence: 99%

Effect of Blast Loading on Seismically Detailed RC Columns and Buildings

et al. 2021

View full text Add to dashboard Cite

Explosions caused by standoff charges near buildings have drastic effects on the internal and external structural elements which can cause loss of life and fatal injuries in case of failure or collapse of the structural element. Providing structural elements with blast resistance is therefore gaining increasing importance. This paper presents numerical investigation of RC columns with different reinforcement detailing subjected to near-field explosions. Detailed finite element models are made using LS-DYNA software package for several columns having seismic and conventional reinforcement detailing which were previously tested under blast loads. The numerical results show agreement with the published experimental results regarding displacements and damage pattern. Seismic detailing of columns enhances the failure shape of the column and decrease the displacement values compared to columns with conventional reinforcement detailing. Further, the effect of several modeling parameters are studied such as mesh sensitivity analysis, inclusion of air medium and erosion values on the displacements and damage pattern. The results show that decreasing the mesh size, increasing erosion value and inclusion of air region provide results that are very close to experimental results. Additionally, application is made on a slab-column multistory building provided with protective walls having different connection details subjected to blast loads. The results of this study are presented and discussed. Use of a top and bottom floor slab connection of protective RC walls are better than using the full connection at the four sides to the adjacent columns and slabs. This leads to minimizing the distortion and failure of column, and therefore it increases the chance of saving the building from collapse and saving human lives. Doi: 10.28991/cej-2021-03091733 Full Text: PDF

show abstract

“…Fu et al [13], Hu et al [14], and Zhang et al [15] studied different types of in situ stress using inversion analysis, respectively. However, in many geotechnical analyses, an artificial structure such as retaining piles [16], diaphragm walls [17], or existing buildings [18] is involved. In such analysis, there may be numerical contact problems between the soil and the structure, which may complicate the geostatic stress field procedure [19,20].…”

Section: Introductionmentioning

confidence: 99%

Research on the Geostatic Stress Field Procedure under Complex Conditions

Wang

Yuan

et al. 2021

Advances in Civil Engineering

View full text Add to dashboard Cite

Geostatic stress field procedure is the first and the most important step for the numerical simulation of geotechnical engineering, which greatly influences the simulation results. Traditional methods often fail when the model is complex. In this paper, based on finite element method (FEM) software ABAQUS, failure reasons of four commonly used methods for the geostatic stress field are studied. According to the analysis results, a new set of methods, which can provide reasonable displacement and stress field results under complex conditions, is proposed. The proposed methods follow the principle that the stress of different materials should be obtained separately to avoid stress distortion. Then, the accuracy and applicability of the proposed method are verified through a comparison study and a specific application. This study provides a theoretical basis for the method of geostatic stress field procedure under complex condition and can serve as a reference for relevant studies.

show abstract

Assessment of structural response of an existing structure under blast load using finite element analysis

Cited by 21 publications

References 16 publications

Structural Response Of A Slotted Bridge Pier Under Blast Loading Using Finite Element Analysis

Structural Response Of A Slotted Bridge Pier Under Blast Loading Using Finite Element Analysis

Effect of Blast Loading on Seismically Detailed RC Columns and Buildings

Research on the Geostatic Stress Field Procedure under Complex Conditions

Contact Info

Product

Resources

About