Experimental and numerical analysis of dynamic rupture of steel pipes under internal high-speed moving pressures

Mirzaei, Majid; Najafi, Mahdi; Niasari, Hosein

doi:10.1016/j.ijimpeng.2015.06.014

Cited by 45 publications

(33 citation statements)

References 23 publications

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“…23,24 Unfortunately, the majority of the reported FE simulations of detonation-driven fracture of cylindrical tubes lack the previously mentioned critical considerations. [18][19][20][21][22] Moreover, the recent FE simulations of detonationdriven fracture of steel pipes and the experimental studies of the fracture surfaces 25 clearly showed the cyclic nature of the crack propagation in Mode I and confirmed that major parts of cracking process and fragmentation can occur after the passage of detonation front. These analyses included fluid-structure interaction effects, and the fracture simulations were performed by using a failure strain-based element deletion process.…”

mentioning

confidence: 72%

“…The exponential decay factor ( T ) was 3 × 10 −6 s. Moreover, a linear decrease of the post‐shock pressure from P 3 to zero (due to evacuation) was imposed for a time period from 100 to 250 μs. The previously mentioned moving‐load parameters were obtained from the fluid–solid interaction analysis, which was previously reported for a similar tube …”

Section: Methodsmentioning

confidence: 99%

“…This value was almost half the static failure strain of the uniaxial static test. 25 Thus, the stress-strain diagrams of Fig. 2 were used to find the corresponding true stress for the ultimate strain which had been calibrated for similar notches under similar loading rates.…”

Section: Dynamic Materials Propertiesmentioning

confidence: 99%

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On the role of stress waves in dynamic rupture of cylindrical tubes

Mirzaei

Tavakoli

Najafi

2017

Fatigue Fract Eng Mat Struct

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A systematic experimental/computational study was performed to investigate the role of stress waves in ductile fracture of cylindrical tubes. The stress waves were created by high‐speed moving load, which was produced by detonation of explosive cord inside two intact and two pre‐flawed steel tubes. Several distinct phenomena like cyclic crack growths in Modes I and III, crack flap bulging and crack curving/branching were observed and simulated by finite element (FE) method. The FE models were composed of 3D brick elements equipped with interface cohesive elements. The analysis results showed that the crack growths in Modes I and III were governed by the detonation‐induced stress waves. The crack speeds were obtained based on the increments of cyclic crack growth and the time period of the stress waves. The estimated crack speed range was 63–230 m s−1 for the axial growth, whereas the average speed for growth in Mode III was 100 m s−1.

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confidence: 72%

Section: Methodsmentioning

confidence: 99%

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On the role of stress waves in dynamic rupture of cylindrical tubes

Mirzaei

Tavakoli

Najafi

2017

Fatigue Fract Eng Mat Struct

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“…Because of the critical importance of explosion effects on surrounding structures, lots of researches have been conducted in this field (Alonso et al, 2008;Du et al, 2016;Li et al 2014;Mirzaei et al 2015;Trelat et al 2007;Zhang et al 2015). Trelat et al (2007), Alonso et al (2008) and Li et al (2014) investigated the effects of explosives on neighborhood structures and buildings.…”

Section: Introductionmentioning

confidence: 99%

“…Trelat et al (2007), Alonso et al (2008) and Li et al (2014) investigated the effects of explosives on neighborhood structures and buildings. Mirzaei et al (2015) investigated structural waves of an explosive string situated in central line of a tube. Zhang et al (2015) used a TNT equivalent method to analyze the dynamic responses of a spherical tank under external blasts.…”

Section: Introductionmentioning

confidence: 99%

A parametric study on the effects of surface explosions on buried high pressure gas pipelines

Adibi¹,

Azadi²,

Farhanieh³

et al. 2017

10.5267/j.esm

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Underground gas pipelines are one of the vital parts of each country which surface blasts can break down such pipelines, making destructive explosions and threatening the safety of neighborhood structures and people. In this paper, to enhance the safety of these lines, response of a buried 56-inch diameter high pressure natural gas pipeline to a surface blast was numerically investigated. Besides, the effects of: i) explosive mass, ii) pipeline thickness, iii) burial depth and iv) concrete protective layer on pipeline deformation were parametrically studied. To simulate the problem according to actual explosion events, geometries were modeled in real scales, pipeline properties were predicted with Johnson-Cook strength and failure model and soil strength was determined by Drucker-Prager model. Also, explosive charge and natural gas were modeled with JWL (Jones-Wilkins-Lee) and ideal gas equation of states. For validation of the numerical method, three bench mark experiments were reproduced. Comparison of the numerical results and the experimental data confirmed the accuracy of the numerical method. Results of parametric studies indicated that by increasing the burial depth from 1.4 to 2.2 m, deformation of the pipeline was reduced about 71%. By analyzing the deformation plots, it was found that in a constant explosive mass, burial depth has a greater effect than pipeline thickness on pipeline deformation reduction. It was also shown that using a concrete protective layer may act reversely and increase pipeline destruction. In other words, to enhance the safety of pipelines, a certain thickness of concrete must be used.

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Dynamic response and safety assessment of inner‐wall corroded concrete pipeline in service subjected to blasting vibration

Cao

Jiang

Zhou

et al. 2022

Structural Concrete

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Buried pipelines in urban area are prone to corrosion defects for many years. Ensure the safety of buried corrosion pipelines is a key concern during tunnel blasting excavation. Based on the blasting engineering along Shenzhen Metro Line 12, the field test of full‐scale concrete pipeline adjacent blasting was implemented. The dynamic response of concrete pipeline induced by blasting vibration was analyzed by using the dynamic finite element numerical simulation method, and the reliability of numerical simulation was verified by the field monitoring data. On this basis, considering the corrosion defect morphology of pipeline, the distribution characteristics of peak particle velocity and peak effective stress of concrete pipeline with different corrosion depths, corrosion widths, and corrosion lengths induced by blasting vibration were discussed. The parameter analysis method was used to research the influence of corrosion morphology parameters on the dynamic response of the pipeline, and the corrosion depth of the inner‐wall of the pipeline was defined as the main control parameter of the dynamic response. According to the failure criteria of concrete materials, the safety criterion of corroded concrete pipelines with different service years subjected to blasting vibration was established.

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Experimental and numerical analysis of dynamic rupture of steel pipes under internal high-speed moving pressures

Cited by 45 publications

References 23 publications

On the role of stress waves in dynamic rupture of cylindrical tubes

On the role of stress waves in dynamic rupture of cylindrical tubes

A parametric study on the effects of surface explosions on buried high pressure gas pipelines

Dynamic response and safety assessment of inner‐wall corroded concrete pipeline in service subjected to blasting vibration

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