Explosion damage analysis of concrete structure with bond-associated non-ordinary state-based peridynamics

Peridynamics has unique advantages in solving discontinuity problems such as explosive damage of structures. To further promote the peridynamic models, numerical algorithms and applications, a bond-associated non-ordinary state-based peridynamics (BA-NOSB PD) approach embedded with the Johnson–Holmq...

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Bibliographic Details
Published in:Engineering with computers 2023-02, Vol.39 (1), p.607-624
Main Authors: Yang, Siyang, Gu, Xin, Xia, Xiaozhou, Zhang, Qing
Format: Article
Language:English
Subjects:
Algorithms
Brittle materials
CAE) and Design
Calculus of Variations and Optimal Control
Optimization
Classical Mechanics
Computational Modeling based on nonlocal theory
Computer Science
Computer-Aided Engineering (CAD
Concrete dams
Concrete slabs
Concrete structures
Control
Damage assessment
Detonation
Empirical analysis
Explosions
Failure analysis
Gravity dams
High strain rate
Impact damage
Influence functions
Math. Applications in Chemistry
Mathematical and Computational Engineering
Mathematical models
Original Article
Overpressure
Reinforced concrete
Simulation
Systems Theory
Wave propagation
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Summary:Peridynamics has unique advantages in solving discontinuity problems such as explosive damage of structures. To further promote the peridynamic models, numerical algorithms and applications, a bond-associated non-ordinary state-based peridynamics (BA-NOSB PD) approach embedded with the Johnson–Holmquist II (JH-2) constitutive is established to analyze the explosive damage and failure of concrete structures. The BA-NOSB PD with the JH-2 constitutive not only can avoid the numerical instability problem, but also can accurately describe the complex mechanical behaviors of quasi-brittle materials such as large strain, high strain rate, and high pressure. The wave propagation and superposition in a concrete bar and the dynamic branch of a rectangular concrete slab are first modeled to display the reliability of the proposed method. Besides, an empirical formula of explosion overpressure is provided to exert the near-field air explosion load. The PD simulation of a reinforced concrete slab under explosion impact captures the typical damage mode well, globally consistent with the actual experiment test. Then, the significance of the influence function on the simulation results is discussed. Finally, the damage process of a concrete gravity dam under explosive loading conditions and the influencing factors such as detonation distance and TNT mass on the damage degree are studied. The simulation results illustrate that the proposed peridynamic approach can accurately and efficiently reproduce the damage and failure process of concrete structures under explosion impact.
ISSN:0177-0667
1435-5663
DOI:10.1007/s00366-022-01620-x