Estimation of piping elastic follow up by using conventional computations

Roche, R.L.

doi:10.1016/0308-0161(86)90077-3

Cited by 20 publications

(3 citation statements)

References 4 publications

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“…However there is very little that provides a practical procedure for categorisation of those components. Roche 3,4,5 suggested a procedure which would allow part of the secondary stress to be retained for the primary stresses.…”

Section: Earlier Analysesmentioning

confidence: 99%

Use of Elastic Follow-Up in Integrity Assessment of Structures

Hadidi-Moud

Smith

2008

Volume 3: Design and Analysis

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This paper reviews the concepts and definitions related to elastic follow-up, Z, together with its potential use in stress classification. Based on the principles governing benchmark multiple bar structures elastic follow-up (EFU) is quantified. Local nonlinearities arising within a structure influence elastic follow-up. These include variations in the geometry of structure, its material properties, effects of plasticity and creep, structural discontinuities and boundary conditions. Elastic follow-up is shown to be simple to evaluate, is physically meaningful (as it relates strain accumulation in the structure to its cause) and is useful in design practice. In this generalised definition Z = 1 indicates no follow-up and represents a fully displacement controlled situation. In contrast Z = ∞ represents the extreme case of fully load controlled situation. Presence of mixed boundary conditions is interpreted as 1 < Z < ∞. A methodology that overcomes the singularity problem of cracked structure to determine Z is then proposed. The distinctive characteristic of the proposed approach is that it takes account of situations where the structure contains defects.

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Section: Earlier Analysesmentioning

confidence: 99%

Use of Elastic Follow-Up in Integrity Assessment of Structures

Hadidi-Moud

Smith

2008

Volume 3: Design and Analysis

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“…At elevated temperatures, EFU becomes more important (Boyle et al 1987). A number of researchers including Teramae (1983), Dhalla (1986) and Roche (1986) investigated the influence of EFU on creep in high temperature pipe work systems.…”

Section: Introductionmentioning

confidence: 99%

The Assessment of Elastic Follow-Up Effects on Cyclic Accumulation of Inelastic Strain Under Displacement-Control Loading

Ferezqi

Shariati

Moud

2017

Iran J Sci Technol Trans Mech Eng

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“…The effect of elastic follow-up on the creep of piping systems has been explored extensively [10][11][12][13], although in these articles, the magnitudes of elastic follow-up are defined differently from that suggested by Robinson. For example, Roche [12] presents elastic follow-up occurring when the least stressed parts act as a spring on the highly stressed part that is accumulating creep deformation. Although these previous articles are confined to creep at high temperatures, the phenomenon of elastic follow-up arises when the highly stressed parts exhibit any change in overall compliance whether through creep, plasticity, or crack growth.…”

Section: Introductionmentioning

confidence: 99%

Elastic follow-up and relaxation of residual stresses

Smith

McFadden

Hadidi-Moud

et al. 2010

Proceedings of the Institution of Mechanical Engineers, Part C:

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A series of experiments were undertaken using a multiple bar assembly to measure elastic follow-up and relaxation of an initial residual stress. A test rig was designed to permit different levels of elastic follow-up to occur. The general features of the experimental results confirmed predictions provided by simple models. The most reliable measure of elastic followup was obtained by measuring the relaxation of the initial residual stress. The rate of relaxation of the residual stress is found to be proportional to the elastic follow-up factor.

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Estimation of piping elastic follow up by using conventional computations

Cited by 20 publications

References 4 publications

Use of Elastic Follow-Up in Integrity Assessment of Structures

Use of Elastic Follow-Up in Integrity Assessment of Structures

The Assessment of Elastic Follow-Up Effects on Cyclic Accumulation of Inelastic Strain Under Displacement-Control Loading

Elastic follow-up and relaxation of residual stresses

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