Pressure–Impulse (P–I) Diagrams for Reinforced Concrete (RC) Structures: A Review

Abedini, Masoud; Mutalib, Azrul A.; Raman, Sudharshan Naidu; Alipour, R.; Akhlaghi, Ebrahim

doi:10.1007/s11831-018-9260-9

Cited by 37 publications

(14 citation statements)

References 91 publications

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“…The concrete is modeled with *MAT-CONCRETE-DAMAGE-REL3 which requires only the unconfined compressive strength in the calibration process [21,22]. The Karagozian & Case Concrete Model is a three-invariant model which uses a three-parameter function to represent the variation of compressive shear strength with mean stress of the form shown in Equation (1). This material model also includes damage and strainrate effects.…”

Section: Materials Modelsmentioning

confidence: 99%

“…With time and improved analytical tools, seismic activity was included in the design as well. Recently, the susceptibility of columns to transverse loadings caused by extreme shocks, such as impacts and explosions, has garnered increasing attention [1]. An RC column may be subjected to different loading conditions such as static, dynamic, or short-duration dynamic loads.…”

Section: Introductionmentioning

confidence: 99%

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Large deflection behavior effect in reinforced concrete columns exposed to extreme dynamic loads

Abedini

Mutalib

Mehrmashhadi

et al. 2020

Front. Struct. Civ. Eng.

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Reinforced concretes (RC) have been widely used in constructions. In construction, one of the critical elements carrying a high percentage of the weight is columns which were not used to design to absorb large dynamic load like surface bursts. This study focuses on investigating blast load parameters to design more resistant RC columns to blast loads. The numerical model is based on finite element analysis (FEA) using LS-DYNA. Numerical results are validated against blast field tests available online. Couples of simulations are performed with changing blast parameters to study effects of various scaled distances on the nonlinear behavior of RC columns. According to simulation results, the scaled distance has a substantial impact on the blast response of RC columns. With lower scaled distance, higher peak pressure and larger pressure impulse are applied on the RC column. Eventually, keeping the scaled distance unchanged, increasing the charge weight or shorter standoff distance cause more damage to the RC column. Intensive studies are carried out to investigate the effects of scaled distance and charge weight on the damage degree and residual axial load carrying capacity of RC columns with various column width, longitudinal reinforcement ratio and concrete strength. Results of this research will be used to assessment the effect of an explosion on the dynamic behavior of RC columns.

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Section: Materials Modelsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Large deflection behavior effect in reinforced concrete columns exposed to extreme dynamic loads

Abedini

Mutalib

Mehrmashhadi

et al. 2020

Front. Struct. Civ. Eng.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Although manufacturers have been using explosive energy for a long time however, explosives can be effective when the detonation energy is controlled [46][47][48][49]. Charge type and mass play an important role to control the detonation energy and impulse.…”

Section: Introductionmentioning

confidence: 99%

Physically-based modelling for sheet metal cone parts forming under blast loading

Alipour

2021

Mechanics & Industry

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Forming sheet metals under blast loading or the explosive forming technique has many advantages for productions, but it is restricted due to its accuracy. This paper introduces a novel theoretical-empirical study for explosive sheet metal forming based on the simple plasticity principles. It provides a method of producing the sheet metal cone parts forming under blast loading, including an analytical model and experimental validation. Firstly, a theoretical-empirical model for cone forming based on underwater explosion employing the impulse method is developed. The model on the whole revealed the relationships among the geometrical parameters of forming a process that is very useful to predict the certain explosive mass for complete forming a cone part. Afterward, a series of experiments are conducted to validate the developed model and also for the required modification in the solution. Comparing the theoretical-empirical solution and experimental results, the ability of the presented model for estimation of the explosive mass is demonstrated. Experimental results show that the theoretical model matched the experiments well.

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“…Amax-V diagram), as proposed in [9], where a rectangular acceleration-time history was used to derive a conservative Amax-V diagram. The derivation of Amax-V diagram has the same nature and procedure as the derivation of pressureimpulse (p-i) diagram, a widely applied method to assess the damage of structures subjected to blast loading [10][11][12]. The American Society for Testing and Materials (ASTM) incorporated the Amax-ΔV diagram into the Standard Test Methods for Mechanical Shock Fragility of Products (ASTM D3332-99) [13].…”

Section: Introductionmentioning

confidence: 99%

Dual damage criteria in a crash stop

Yang

2020

International Journal of Mechanical Sciences

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This study proposes a method to apply dual criteria for the assessment of product damage based on the deceleration signal in a crash-stop incident. To evaluate the shock effects, a procedure is proposed to decompose the original crash signal into two components, i.e. an equivalent crash signal and a residual shock signal. The characteristics of crash signals are analysed in both time and frequency domains. It is found that the equivalent crash signal can represent the original crash signal if the dominant frequency (fn) of the product structure is relatively lower than the effective frequency (fs) of the crash signal, i.e. ≤ 1 5 . Otherwise, the original crash signal should be used in the assessment of product damage if > 1 5. The dual damage criteria method is proposed by combing the maximum-acceleration vs. velocity-change (Amax-V) diagram and shock response spectrum (SRS), i.e. the former can offer a lower bound of damage boundary on Amax-V diagram while the latter can define an upper bound of damage boundary on SRS graph. The method of dual damage criteria is illustrated numerically using two types of cantilever beams, as an example. The proposed method can be applied with the critical SRS (Sc) method recommended in ASTM D3332-99 for the packaging design and test, and may also be considered in the design and test of other impact energy absorbers in a crash-stop incident.

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Pressure–Impulse (P–I) Diagrams for Reinforced Concrete (RC) Structures: A Review

Cited by 37 publications

References 91 publications

Large deflection behavior effect in reinforced concrete columns exposed to extreme dynamic loads

Large deflection behavior effect in reinforced concrete columns exposed to extreme dynamic loads

Physically-based modelling for sheet metal cone parts forming under blast loading

Dual damage criteria in a crash stop

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