Buckling behaviour of internal stiffened thin-walled stainless steel liners under external constraints

Zhao, Yahong; Ma, Baosong; Ariaratnam, Samuel T.; Yan, Xuefeng; Xiang, Weigang; Zhu, Zihao; Li, Zhenhua; Esfahani, Mohammadreza Moghbel

doi:10.1016/j.tust.2022.104685

Cited by 14 publications

(2 citation statements)

References 43 publications

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“…EI-Sway [15] established an approximate solution for enhancement factors for loosely fitted liners. Zhao [16] studied the buckling behavior of reinforced steel liners under negative pressure loading and proposed a design model to predict the critical buckling pressure of the liners. However, annular gaps might occur when the liner is installed or deformed after prolonged exposure to water pressure, which will affect the bearing capacity of the liner.…”

Section: Introductionmentioning

confidence: 99%

Buckling Behavior of Loosely Fitted Formed-In-Place Pipe Liner in Circular Host Pipe under External Pressure

Zeng

Yan²,

Xiang³

et al. 2023

Applied Sciences

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The formed-in-place pipe (FIPP) is a trenchless technology used for pipeline rehabilitation. It is a folded PVC pipe that expands through thermoforming to fit tightly inside the host pipe. However, the deficiencies during the construction of FIPP liners such as insufficient inflation, pipe misalignment and initial deformation will lead to elliptical deformation of the FIPP liner, which affects the load-bearing performance of the liner and makes it susceptible to buckling failure. In this paper, the buckling behavior of loosely fitted FIPP liners under uniform external pressure was investigated by the external pressure resistance test and finite element model. The pre- and post-buckling equilibrium paths verified the finite element model. The results indicated that the value of the dimension ratio will significantly reduce the critical buckling pressure. With the increasing value of liner major axis ratio to host pipe, the reduction effect on the critical buckling pressure caused by the increase in the ovality will diminish. Different values of liner major axis ratio to host pipe and ovality changed the range of the detached portion, which affected the critical buckling pressure. The parametric studies modified the design model from ASTM F1216, which was established to predict the critical buckling pressure of a loosely fitted FIPP liner and reduced the average difference rate from 23.43% to 5.52%.

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Section: Introductionmentioning

confidence: 99%

Buckling Behavior of Loosely Fitted Formed-In-Place Pipe Liner in Circular Host Pipe under External Pressure

Zeng

Yan²,

Xiang³

et al. 2023

Applied Sciences

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“…The popularity of steel are the relatively low cost of making, forming, and processing it. Most engineering applications indicate that steel structure stiffening is a better choice for improving the stability and bearing performance of steel structures [4]. Considering the requirements of reliability, economy, and anti-corrosion performance, the weld forming method of 06Cr19Ni10 stainless steel ring-stiffened cylindrical pressure shell was studied.…”

Section: Introductionmentioning

confidence: 99%

Weld Forming of 06Cr19Ni10 stainless steel ring-stiffened cylindrical pressure shell of UUV

Zhang,

Liu,

Xia

et al. 2023

Ninth International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2023)

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The pressure shell is a key component to ensure the pressure bearing and sealing of the unmanned underwater vehicle (UUV). Considering the requirements of reliability, economy, and anti-corrosion performance, the weld forming method of 06Cr19Ni10 stainless steel ring-stiffened cylindrical pressure shell was studied. Firstly, according to the existing pressure shell structure, the strength design is carried out with reference to the design code of China Classification Society, and the structural model of the ring-stiffened cylindrical pressure shell is obtained. Then, through the analysis of the weld forming process, the deformation control method of the pressure shell in the manufacturing process is studied, and the weld forming process of the ring-stiffened cylindrical pressure shell is determined. Finally, the weld forming method of 06Cr19Ni10 stainless steel ring-stiffened cylindrical pressure shell is verified through small-batch trial production and external pressure test, which provides a reference for the pressure shell design of the new underwater unmanned underwater vehicle. The external hydraulic test shows that the welding and heat treatment process proposed in this paper can not only ensure the structural strength of the shell, but also effectively control the welding deformation, and ensure the sealing performance of the shell through the final cutting process.

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Experimental Study on Quick‐Locking Reinforcement Model for Local Defects in Pipelines in the Rich Water Area

Luo,

Yan

2024

Engineering Reports

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The management of local defects in municipal pipelines in water‐rich areas remains a significant challenge, particularly under high‐pressure conditions. This study investigates the performance of quick‐lock steel sleeves as a trenchless repair method through full‐scale experiments on five different pipeline diameters. The experiments focus on the failure modes and critical buckling pressure of the sleeves under external pressure. A novel design model based on structural reliability theory was developed and validated against experimental results. The results show a close match between the calculated and experimental buckling pressures, with a ratio ranging from 0.87 to 1.15. These findings provide valuable insights for the design and application of quick‐lock sleeves in high‐pressure municipal networks. This study contributes to improving the reliability and effectiveness of pipeline repair technologies, offering practical solutions for addressing pipeline leakage and instability in challenging environments.

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Buckling behaviour of internal stiffened thin-walled stainless steel liners under external constraints

Cited by 14 publications

References 43 publications

Buckling Behavior of Loosely Fitted Formed-In-Place Pipe Liner in Circular Host Pipe under External Pressure

Buckling Behavior of Loosely Fitted Formed-In-Place Pipe Liner in Circular Host Pipe under External Pressure

Weld Forming of 06Cr19Ni10 stainless steel ring-stiffened cylindrical pressure shell of UUV

Experimental Study on Quick‐Locking Reinforcement Model for Local Defects in Pipelines in the Rich Water Area

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