Numerical simulation study of spallation in reinforced concrete plates subjected to blast loading

Xu, Kai; Lu, Yong

doi:10.1016/j.compstruc.2005.09.029

Cited by 201 publications

(100 citation statements)

References 7 publications

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“…Selecting a value for maximum shear strain is not straightforward and it is highly dependent on the material model. A value between 0.1 and 0.9 was reported in the literature (Coughlin et al 2010;Morris et al 2013;Wang et al 2010;Xu and Lu 2006). It was concluded that a value of 0.1 can better describe this criterion for CSCM during this contactimpact problem.…”

Section: Solution Techniques and Assessment Metricsmentioning

confidence: 82%

“…An extensive literature review was performed here in order to find a suitable failure criterion for tip-over impact of concrete casks in LS-DYNA (Hallquist 2006). Table 5 summarizes each work based on the mesh, failure criteria and type of the structural concrete (Coughlin et al 2010;Farnam et al 2010;Huang and Wu 2009;Islam et al 2011;Shi et al 2010;Tang and Hao 2010;Teng et al 2003;Tu and Lu 2010;Wang et al 2009;Wang et al 2010;Wu et al 2011;Xu and Lu 2006).…”

Section: Solution Techniques and Assessment Metricsmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Alkali-Silica Reactivity Damage to Tip-Over Impact Performance of Dry Cask Storage Structures

Champiri¹,

Mousavi²,

Willam³

et al. 2018

Int J Concr Struct Mater

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This paper investigates the effect of concrete degradation due to alkali-silica reactivity (ASR) and its effect on the performance of vertical concrete casks in the case of a hypothetical tip-over event. ASR is one of the major problems in certain concrete structures exposed to high relative humidity and temperature. Using the first order kinetic model, the mechanical and environmental effects of degradation are modeled for a dry-cask storage structure under the conditions that ASR is completely extended. Following the degradation, a tip-over impact simulation was performed and compared with that of an intact cask in terms of failure modes, damage patterns, stresses, and accelerations. It was seen that concrete crushing and shear banding are major failure modes in the cask with intact concrete, but in the case of the ASR affected cask, the concrete is fully damaged and a longitudinal crack which separates the cask into two parts propagates through the outerpack.

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Section: Solution Techniques and Assessment Metricsmentioning

confidence: 82%

Section: Solution Techniques and Assessment Metricsmentioning

confidence: 99%

Effect of Alkali-Silica Reactivity Damage to Tip-Over Impact Performance of Dry Cask Storage Structures

Champiri¹,

Mousavi²,

Willam³

et al. 2018

Int J Concr Struct Mater

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“…However, these equations are considered conservative as damage and crater behavior were defined in term of weight of explosive, whereas the damage behavior is highly likely to be influenced by the standoff distance and incidence angle in the form of scaled-distance function. However, when Equation (13) is plotted against the weight of explosion as shown in Figure 10, the results of scabbed crater diameter are in the middle of the maximum and minimum curves produced by Xu and Lu (2006). The experimental data from Yuan et al (2008) has lower scabbed crater diameter at weight of explosion of 5kg, 8kg and 10kg.…”

Section: Spalling and Scabbingmentioning

confidence: 98%

“…Therefore, blast loading is known as the most destructive dynamic load that a structure may experience (Xu and Lu, 2006). If an explosion occurs in close proximately to the structure, blast loading that travel as shock wave will setup an internal compressive stress wave and subsequently produce shattering effects on the material.…”

Section: Introductionmentioning

confidence: 99%

Fracture Failure of Reinforced Concrete Slabs Subjected to Blast Loading Using the Combined Finite-Discrete Element Method

Jaini

Feng

Owen

et al. 2016

Lat. Am. j. solids struct.

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Numerical modeling of fracture failure is challenging due to various issues in the constitutive law and the transition of continuum to discrete bodies. Therefore, this study presents the application of the combined finite-discrete element method to investigate the fracture failure of reinforced concrete slabs subjected to blast loading. In numerical modeling, the interaction of non-uniform blast loading on the concrete slab was modeled using the incorporation of the finite element method with a crack rotating approach and the discrete element method to model crack, fracture onset and its post-failures. A time varying pressure-time history based on the mapping method was adopted to define blast loading. The Mohr-Coulomb with Rankine cut-off and von-Mises criteria were applied for concrete and steel reinforcement respectively. The results of scabbing, spalling and fracture show a reliable prediction of damage and fracture. KeywordsFracture, the combined finite-discrete element method, reinforced concrete slab, blast loading

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“…Reinforced concrete slabs are typically analyzed for blast loadings using one of two methods of very different complexity: (2) finite element analysis methods (e.g., [1,2]); and (1) equivalent single degree of freedom (SDOF) analysis [3,4]. SDOF methods are common nowadays for blast design of protective structural elements [4,8].…”

Section: Introductionmentioning

confidence: 99%

A new non-uniform blast load model for SDOF method of one-way reinforced concrete slab

Wang

Zhang

et al. 2012

EPJ Web of Conferences

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Abstract.A new effective model for calculation of the equivalent uniform blast load for non-uniform blast load such as close-in explosion of a one-way square and rectangle reinforced concrete slab is proposed in this paper. The model is then validated using single degree of freedom (SDOF) system with the experiments and blast tests for square slabs and rectangle slabs. Test results showed that the model is accurate in predicting the explosive charge weight and stand-off distance to impose a given damage level on the tested RC slabs especially for close-in blast load. It is shown that the new model is more accurate than the conventional SDOF analysis and is running faster than the FE analysis.

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Numerical simulation study of spallation in reinforced concrete plates subjected to blast loading

Cited by 201 publications

References 7 publications

Effect of Alkali-Silica Reactivity Damage to Tip-Over Impact Performance of Dry Cask Storage Structures

Effect of Alkali-Silica Reactivity Damage to Tip-Over Impact Performance of Dry Cask Storage Structures

Fracture Failure of Reinforced Concrete Slabs Subjected to Blast Loading Using the Combined Finite-Discrete Element Method

A new non-uniform blast load model for SDOF method of one-way reinforced concrete slab

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