Limit loads of circumferentially flawed pipes and cylindrical vessels under internal pressure

Staat, Manfred; Vu, Duc Khôi

doi:10.1016/j.ijpvp.2006.01.002

Cited by 14 publications

(4 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Clusters of aligned particles in CR orientation were present in the direction perpendicular to the loading axis and more favorably oriented for crack initiation and growth. The shorter fatigue life is of serious concern because in this orientation the hoop stress in the cylinder has about twice the value of the axial stress [24].…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Role of extruded texture on fatigue crack growth in a high strength aluminum alloy thick-walled cylinder

et al. 2009

View full text Add to dashboard Cite

In present study, as a basic step for modeling the fatigue behavior of an extruded Al alloy cylinder, the fatigue crack growth data of the alloy was collected in two orientations. Microstructural analysis revealed that the material had recrystallized grains and clusters of constituent particles aligned in the direction of extrusion. Fatigue life of the samples revealed a shorter fatigue life representing a higher fatigue crack growth rate in transverse direction. The Paris constants C and m were found to be 4 x 10 -11 and 3.4 for the transverse orientation. The same constants were found to be 2 x 10 -10 and 2.6 for the longitudinal direction. Post fracture analysis revealed that the topographical appearance of the fractured surfaces in two orientations was different. The mechanism of crack growth was the formation of striations. The present study revealed that the texture of the constituent particles created during extrusion process has a pronounced effect on the crack growth rate in two orientations.

show abstract

Section: Mechanical Propertiesmentioning

confidence: 99%

Role of extruded texture on fatigue crack growth in a high strength aluminum alloy thick-walled cylinder

et al. 2009

View full text Add to dashboard Cite

show abstract

“…Shim [17] used the finite element method to analyze the ultimate load of thick-walled pipes with irregular penetration cracks under combined loads. Staat and Vu [18] carried out the plastic limit analysis of circumferentially cracked tubes and vessels under the action of internal pressure by means of the finite element method and proposed the global limit load solution and the local limit load solution.…”

Section: Introductionmentioning

confidence: 99%

Buckling Analysis of Corroded Pipelines under Combined Axial Force and External Pressure

Chen

2022

Metals

View full text Add to dashboard Cite

Affected by a complex environment, corrosion is a common defect in steel pipelines. Moreover, steel pipelines are subjected to large axial forces during their installation and operation. Corroded deep-sea steel pipelines are prone to local buckling under complex loads. Therefore, in view of this problem, the collapse response of corroded steel pipelines under the combined axial force and external pressure is analyzed in detail. First, a formula for evaluating the collapse pressure of corroded steel pipelines under external pressure and axial force is proposed. Then, the factors affecting the collapse pressure of the steel pipeline are parameterized by using the finite element method. The accuracy of the finite element model is proved by collapse tests of the corroded steel pipeline. As shown in finite element results, the diameter-to-thickness ratio, initial ovality and corrosion defect size have significant effects on the buckling response of a steel pipeline. The collapse pressure of the steel pipeline decreases as the axial force increases. Finally, based on the finite element simulation results, the parameter variables in the evaluation formula are obtained.

show abstract

“…Numerous models and computational analysis have been proposed for predicting the failure load of a pipe containing circumferential cracks. Among them, the net-sectioncollapse (NSC) analysis (Rahman and Wilkowski, 1998;Rahman, 1998;Lei and Budden, 2004;Kim et al, 2006;Staat and Vu, 2006;Li et al, 2010) is a simple and straightforward method for calculating the maximum load a cracked pipe can sustain assuming that failure is governed by the strength of the materials (generally based on an average between the yield stress and ultimate strength). Rahman and Wilkowski (1998) NSC analysis is however limited to a single symmetrical circumferential crack centered at the top of the pipe circumference.…”

Section: Introductionmentioning

confidence: 99%

Uncertainty analysis for the net-section-collapse failure criterion of circumferentially cracked cylinders for multiple arbitrary-shaped circumferential cracks

Dingreville

Eckert-Gallup

Sallaberry

2014

International Journal of Pressure Vessels and Piping

View full text Add to dashboard Cite

In this manuscript, a generalized net-section-collapse (NSC) failure criterion of circumferentially cracked pipes with multiple arbitrary-shaped cracks is presented. This generalized NSC formulation is capable of predicting the NSC moment of a pipe with multiple arbitrary-shaped cracks distributed around the circumference of the pipe, regardless of whether they are distributed symmetrically or not. The case in which internal cracks straddle the compressive zone is accounted for in the present formulation. Closed form solutions are provided for the maximum moments of pipes containing multiple cracks with idealized shapes, namely constant depth, semi-elliptical and parabolic crack profiles. Through a series of examples, the results show the effectiveness and accuracy of the method. Using this method, quantification of the effect of the crack profile uncertainty on the maximum bending moment sustained by a cracked pipe is evaluated. It is demonstrated that while the uncertainty associated with the surface roughness of the crack profile has little to no effect on the maximum bending moment, irregular shape profiles have, not surprisingly, a large effect on the estimation of the maximum bending moment. In fact, it is mathematically shown that the uncertainty associated with the maximum bending moment

show abstract

Limit loads of circumferentially flawed pipes and cylindrical vessels under internal pressure

Cited by 14 publications

References 7 publications

Role of extruded texture on fatigue crack growth in a high strength aluminum alloy thick-walled cylinder

Role of extruded texture on fatigue crack growth in a high strength aluminum alloy thick-walled cylinder

Buckling Analysis of Corroded Pipelines under Combined Axial Force and External Pressure

Uncertainty analysis for the net-section-collapse failure criterion of circumferentially cracked cylinders for multiple arbitrary-shaped circumferential cracks

Contact Info

Product

Resources

About