A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Damage Analysis of 3D Masonry Structures under Explosion Shock Waves Based on the CDEM
https://orcid.org/http://orcid.org/0009-0004-9839-6871
https://orcid.org/http://orcid.org/0009-0005-0527-2894
https://orcid.org/http://orcid.org/0000-0002-3693-8039
Masonry structures are highly vulnerable to collapse when subjected to blast shock waves. However, existing research primarily concentrates on the response of masonry walls under blast loading, with limited investigation into the response of three-dimensional full-size masonry structures. Therefore, this paper investigates the effects of blast distance and blast equivalent on masonry structure damage using the continuum-discontinuum element method (CDEM). The integration of the HJC element constitutive model, fracture energy contact surface constitutive model, and shock wave fast imposition algorithm into CDEM enables efficient calculation of the damage process of masonry structures under the influence of shock waves. Initially, the blasting process of a masonry wall was numerically simulated, yielding results consistent with experimental findings. Subsequently, the entire damage process of a 3D full-size masonry structure under blast loading was simulated. The findings indicate that at short distances from the blast, the wall may detach directly from the concrete frame due to shock wave overpressure reaching the material’s ultimate compressive strength, leading to structural instability. As the distance increases beyond a critical value, the shock wave’s effect weakens, and wall damage transitions gradually to bending damage.
Damage Analysis of 3D Masonry Structures under Explosion Shock Waves Based on the CDEM
https://orcid.org/http://orcid.org/0009-0004-9839-6871
https://orcid.org/http://orcid.org/0009-0005-0527-2894
https://orcid.org/http://orcid.org/0000-0002-3693-8039
Masonry structures are highly vulnerable to collapse when subjected to blast shock waves. However, existing research primarily concentrates on the response of masonry walls under blast loading, with limited investigation into the response of three-dimensional full-size masonry structures. Therefore, this paper investigates the effects of blast distance and blast equivalent on masonry structure damage using the continuum-discontinuum element method (CDEM). The integration of the HJC element constitutive model, fracture energy contact surface constitutive model, and shock wave fast imposition algorithm into CDEM enables efficient calculation of the damage process of masonry structures under the influence of shock waves. Initially, the blasting process of a masonry wall was numerically simulated, yielding results consistent with experimental findings. Subsequently, the entire damage process of a 3D full-size masonry structure under blast loading was simulated. The findings indicate that at short distances from the blast, the wall may detach directly from the concrete frame due to shock wave overpressure reaching the material’s ultimate compressive strength, leading to structural instability. As the distance increases beyond a critical value, the shock wave’s effect weakens, and wall damage transitions gradually to bending damage.
Damage Analysis of 3D Masonry Structures under Explosion Shock Waves Based on the CDEM
https://orcid.org/http://orcid.org/0009-0004-9839-6871
https://orcid.org/http://orcid.org/0009-0005-0527-2894
https://orcid.org/http://orcid.org/0000-0002-3693-8039
Masonry structures are highly vulnerable to collapse when subjected to blast shock waves. However, existing research primarily concentrates on the response of masonry walls under blast loading, with limited investigation into the response of three-dimensional full-size masonry structures. Therefore, this paper investigates the effects of blast distance and blast equivalent on masonry structure damage using the continuum-discontinuum element method (CDEM). The integration of the HJC element constitutive model, fracture energy contact surface constitutive model, and shock wave fast imposition algorithm into CDEM enables efficient calculation of the damage process of masonry structures under the influence of shock waves. Initially, the blasting process of a masonry wall was numerically simulated, yielding results consistent with experimental findings. Subsequently, the entire damage process of a 3D full-size masonry structure under blast loading was simulated. The findings indicate that at short distances from the blast, the wall may detach directly from the concrete frame due to shock wave overpressure reaching the material’s ultimate compressive strength, leading to structural instability. As the distance increases beyond a critical value, the shock wave’s effect weakens, and wall damage transitions gradually to bending damage.
Damage Analysis of 3D Masonry Structures under Explosion Shock Waves Based on the CDEM
KSCE J Civ Eng
Zhao, Yuhang (author) / Yan, Xiao (author) / Zhang, Yiming (author)
KSCE Journal of Civil Engineering ; 28 ; 5781-5792
2024-12-01
12 pages
Article (Journal)
Electronic Resource
English
Damage Analysis of 3D Masonry Structures under Explosion Shock Waves Based on the CDEM
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