Limit analysis based on a modified elastic compensation method for nozzle-to-cylinder junctions

Pu, Yang; Liu, Yanfei; Ohtake, Yasuhiro; Yuan, Hang; Cen, Zhangzhi

doi:10.1016/j.ijpvp.2005.06.005

Cited by 30 publications

(11 citation statements)

References 16 publications

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“…Compensation Method (ECM) [2], the Dhalla Reduction Procedure [3], the Gloss R-Node Method [4], and the Linear Matching Method (LMM) [5]. The ECM was further modified by Yang et al as Modified Elastic Compensation Method (MECM) [6]. Muscat and Mackenzie presented a superposition method to establish elastic shakedown loads using the lower bound theorem [7].…”

Section: Iterative Elastic Techniques Are a Typical Approach Of Direcmentioning

confidence: 99%

Shakedown, ratchet, and limit analyses of 90° back-to-back pipe bends under cyclic in-plane opening bending and steady internal pressure

Cho

Chen

2018

European Journal of Mechanics - A/Solids

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A 90° back-to-back pipe bend structure subjected to cyclic in-plane bending moment and steady internal pressures is analysed by means of the Linear Matching Method (LMM) in order to create the limit, shakedown, and ratchet boundaries. The analyses performed in this work demonstrate that the cyclic moment has a more significant impact upon the structural integrity of the pipe bend than the constant pressure. Full cyclic incremental analyses are used to verify the structural responses either side of each boundary and confirm correct responses. In addition, the shakedown boundary produced by the LMM is compared to another shakedown boundary of an identical pipe bend computed by the simplified technique and it is shown that the LMM calculates results more accurately. Parametric studies involving a change of geometry of the pipe bends and loading type are carried out. From the studies of the geometry, two semi-empirical equations are derived from correlations of the reverse plasticity limit and the limit pressure with the bend characteristic. Finally, the results presented in this paper provide a comprehensive understanding of post-yield behaviours of the 90° back-to-back pipe structure under the combined loading as well as offering essential points to be concerned for the life assessment of the piping system.

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Section: Iterative Elastic Techniques Are a Typical Approach Of Direcmentioning

confidence: 99%

Shakedown, ratchet, and limit analyses of 90° back-to-back pipe bends under cyclic in-plane opening bending and steady internal pressure

Cho

Chen

2018

European Journal of Mechanics - A/Solids

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“…Hamilton et al [138] proposed a simple method to obtain lower bound limit loads of pressurized cylinder-cylinder intersections using generalized yield criteria. Yang et al [139] developed a modified elastic compensation method for limit analysis of nozzle-to-cylinder junction. Three representative examples were calculated, and the results were compared with other known solutions.…”

Section: Cylinder-cylinder Intersectionsmentioning

confidence: 99%

Junctions in shell structures: A review

Pietraszkiewicz

Konopińska

2015

Thin-Walled Structures

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“…The SEMAs for existing EMAPs can be illustrated based on stresses as follows [10,[13][14][15][17][18][19]:…”

Section: Strategies Of Elastic Modulus Adjustmentmentioning

confidence: 99%

“…Hamilton et al, and Hamilton and Boyle [8,9] adopted the ECM combined with generalised yield criteria to calculate the lower-bound limit loads for thin plates. Yang et al [10] developed a modified elastic compensation method (MECM) by adopting a fixed adjustment factor to define the reference stress. Chen et al [11] introduced a dynamic adjustment factor related to structural stress concentration coefficient into the formulation of the reference stress and proposed an improved elastic compensation method (KtECM) to improve its convergence.…”

Section: Introductionmentioning

confidence: 99%

Elastic modulus reduction method for limit analysis of thin plate and shell structures

Yu¹,

Yang²

2010

Thin-Walled Structures

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Limit analysis based on a modified elastic compensation method for nozzle-to-cylinder junctions

Cited by 30 publications

References 16 publications

Shakedown, ratchet, and limit analyses of 90° back-to-back pipe bends under cyclic in-plane opening bending and steady internal pressure

Shakedown, ratchet, and limit analyses of 90° back-to-back pipe bends under cyclic in-plane opening bending and steady internal pressure

Junctions in shell structures: A review

Elastic modulus reduction method for limit analysis of thin plate and shell structures

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