Numerical simulation of failure modes of concrete gravity dams subjected to underwater explosion

Zhang, Sherong; Wang, Gaohui; Wang, Chao; Pang, Bohui; Du, Chengbin

doi:10.1016/j.engfailanal.2013.10.001

Cited by 96 publications

(17 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The sound-solid interaction between the CFRD structural displacements and the fluid mesh acoustic pressures at their common surfaces was implemented in ABAQUS using the *TIE constraint option. Zhang et al 36 analyzed the sensitivity of the mesh, indicating that the model with a coarse mesh has a failure mode similar to that of one with a fine mesh. This indicates that the sensitivity of the mesh, at least within a certain range, is not relevant to the qualitative analysis of such problems.…”

Section: Fe Meshmentioning

confidence: 99%

“…This indicates that the sensitivity of the mesh, at least within a certain range, is not relevant to the qualitative analysis of such problems. Owing to the consistent magnitude of the structural model, the magnitude of the mesh size in Zhang et al 36 was used in this study. The slab elements have the largest mesh size at 0.3 m. In the slab partition, the ratio of the length of each cell is not greater than 1, and the ratio of each unit volume is no more than 3.…”

Section: Fe Meshmentioning

confidence: 99%

See 1 more Smart Citation

Evaluation of anti-explosion performance of Shuibuya concrete-faced rockfill dam slabs subjected to strong shock waves caused by an underwater explosion

Zhu

Zou

et al. 2019

Advances in Mechanical Engineering

View full text Add to dashboard Cite

A concrete plastic-damage model, the extended Drucker-Prager model for rockfill, and acoustic elements for water were introduced and applied to the impact fracture analysis of a concrete-faced rockfill dam-water three-dimensional system. The plastic-damage dynamic analysis process was used in combination with the concrete compressive and tensile damage model. The 223-m high Shuibuya concrete-faced rockfill dam was analyzed using an explicit integration. Numerical simulations of the damage threshold, rockfill modeling, and interface processing were conducted to research the effect of the anti-explosion performance that occurs when a concrete slab is subjected to an underwater shock wave. The simulation results indicate that the main regions of weakness in the slabs during an underwater shock wave are determined by the tensile damage. The slab's anti-knock weak areas appear in the right dam abutment and the top of the left dam. The anti-knock performance in the upper slab is inferior to that of the lower slab. Specific local optimization steps should be applied at these locations to improve the slabs' anti-knock capabilities, which are important for designing concrete-faced rockfill dams.

show abstract

Section: Fe Meshmentioning

confidence: 99%

Section: Fe Meshmentioning

confidence: 99%

Evaluation of anti-explosion performance of Shuibuya concrete-faced rockfill dam slabs subjected to strong shock waves caused by an underwater explosion

Zhu

Zou

et al. 2019

Advances in Mechanical Engineering

View full text Add to dashboard Cite

show abstract

“…According to different detonation mediums, there are mainly three blasting ways, i.e., air explosion [7][8][9], underwater explosion [9][10][11][12], and penetration explosion [13,14]. Many researchers have conducted comprehensive experimental and numerical investigations related to air or underwater explosion effects on civil structures.…”

Section: Introductionmentioning

confidence: 99%

Combined effects of penetration and explosion on damage characteristics of a mass concrete target

Yang¹,

Wang²,

Lu³

et al. 2018

J. vibroeng.

Self Cite

View full text Add to dashboard Cite

Abstract. With the development of the precision guidance technology, the earth-penetrating weapon (EPW) is a huge threat to infrastructures. The objective of this research is to investigate the damage characteristics of mass concrete targets under the combined action of penetration and explosion. The validity of the penetration model is discussed by reproducing a previous experimental test reported in the literature. Meanwhile, a field test about the internal explosion in a concrete cube is conducted to verify the validity of the internal explosion model. Subsequently, damage characteristics of a mass concrete target from the upper part of a concrete gravity dam are discussed when subjected to the combined action of the penetration and explosion. In order to improve the structural performance of the mass concrete target to penetration and explosion loadings, high strength concrete material is selected as a preventive measure. Penetration processes and damage patterns of the mass target with normal and high strength concrete material are compared. Then, three internal explosion models are presented to investigate the influence of the initial penetration damage on the failure characteristics of the mass concrete target. The results show that the resistance of the mass target to the combined action of the penetration and explosion can be enhanced significantly by using the high strength concrete material. The initial penetration damage has a significant influence on the damage processes of the mass concrete target subjected to internal blast loading.

show abstract

“…The main advantage of DEM is the feasibility to model highly complex poly-dispersed systems by using the basic data on individual particles without making oversimplifying assumptions (Kaianauskas et al 2010). So more and more researchers are striving to apply this approch to the simulation of concrete although some conventional methods, such as the finite difference, finite element and boundary element methods, can also simulate the concrete or concrete-like materials to some extent Zhang et al 2014;Shuguang and Qingbin 2015;Haeri et al 2013;Haeri 2015). However, there are a significant portion of concrete models built on the two-dimensional (2D) level (Camborde et al 2000;Brara et al 2001;Nagai 2004;Wang 2008;Azevedo 2008;Azevedo et al 2010;Lian et al 2011a, b; which are considered to be difficult to accurately capture the interlock effect of particles in the 3D domain (Chen et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Simulating Tensile and Compressive Failure Process of Concrete with a User-defined Bonded-Particle Model

Ren

Tian

2018

Int J Concr Struct Mater

View full text Add to dashboard Cite

A user-defined bonded-particle model (UBM) which is based on the modified parallel bond was established in this paper to investigate the tensile and compressive failure mechanism of concrete on the three-dimensional (3D) level. The contact constitutive relation and the failure criterion of the UBM can be added to the commercial discrete element software PFC 3D by compiling them as a dynamic link library file and loading it into PFC 3D whenever needed. In addition, the aggregate particles can be generated according to the volume fraction and the shape of each aggregate is irregular. Then, by comparing the results of numerical simulation with the results of laboratory tests, it is found that this bonded-particle model can simulate the tensile and compressive failure process of concrete well to a certain extent. Specifically, the two have basically similar failure patterns and stress-strain responses no matter under tension or compression loading condition. All results indicate that this UBM is a promising tool in understanding and predicting the tensile and compressive failure process of concrete. which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

show abstract

Numerical simulation of failure modes of concrete gravity dams subjected to underwater explosion

Cited by 96 publications

References 27 publications

Evaluation of anti-explosion performance of Shuibuya concrete-faced rockfill dam slabs subjected to strong shock waves caused by an underwater explosion

Evaluation of anti-explosion performance of Shuibuya concrete-faced rockfill dam slabs subjected to strong shock waves caused by an underwater explosion

Combined effects of penetration and explosion on damage characteristics of a mass concrete target

Simulating Tensile and Compressive Failure Process of Concrete with a User-defined Bonded-Particle Model

Contact Info

Product

Resources

About