Description of reversed yielding in thin hollow discs subject to external pressure

Alexandrov, Sergei; Pirumov, Alexander; Jeng, Yeau-Ren

doi:10.12989/sem.2016.58.4.661

Cited by 2 publications

(6 citation statements)

References 7 publications

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“…A new theory of the autofrettage process of a long open-ended cylinder has been developed. The theory accounts for the Bauschinger effect according to the material model proposed in [ 9 ]. This model takes into account some typical features in the behavior of high-strength steel.…”

Section: Discussionmentioning

confidence: 99%

“…Analysis of the autofrettage of open-ended cylinders made of high-strength steel under plane stress conditions needs a more general model that predicts the perfectly plastic behavior of the material at loading and accounts for the Bauschinger effect at unloading. Such a material model has been proposed in [ 9 ]. This model is adopted in the present paper.…”

Section: Introductionmentioning

confidence: 99%

“…Experimental studies for materials that reveal the Bauschinger effect have been reported in [ 17 , 18 , 19 ]. The objective of the present research is rather to develop a simple theory of autofrettage of open-ended cylinders made of high-strength steel based on the model [ 9 ]. In particular, a semi-analytic solution for the stage of loading is available in [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

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Description of Residual Stresses in Autofrettaged Open-Ended Cylinders Made of High-Strength Steel

et al. 2020

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The elastic range in loading–unloading processes is often reduced with a Bauschinger effect. This material property may have a high impact on residual stresses and, as a result, on the performance of autofrettaged cylinders under service conditions. The objective of the present paper is to demonstrate this impact using a material model that accounts for the response of typical high-strength steel. The solution is semi-analytic and, therefore, can be used for fast and accurate analysis of the process of autofrettage. A numerical example illustrates the general solution. This example shows that the Bauschinger effect has a significant impact on the residual circumferential stress in the vicinity of the inner radius of the cylinder. This stress is the most significant quantity of autofrettaged cylinders. Therefore, the main result obtained suggests that even a moderate Bauschinger effect should be taken into account in analyses of the process of autofrettage.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Description of Residual Stresses in Autofrettaged Open-Ended Cylinders Made of High-Strength Steel

et al. 2020

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“…The model of the Bauschinger effect proposed in [4] is adopted to find the distribution of the residual stresses in a thin hyperbolic disc subject to uniform pressure over its outer radius, followed by unloading. The influence of the constitutive parameter c on the distribution of residual stresses in thin discs subject to outer pressure followed by unloading has been investigated in [4]. The objective of this research is to evaluate the effect of the parameter n involved in Eq.…”

Section: Discussionmentioning

confidence: 99%

“…In addition, plastic strain in this region affects the reversed yield surface. According to the model proposed in [4] the forward yield surface is not affected by plastic strain. In particular, the von Mises yield criterion under plane stress conditions can be represented as…”

Section: Statement Of the Problemmentioning

confidence: 99%

Influence of the Bauschinger Effect on the Distribution of Residual Stresses in a Thin Hollow Hyperbolic Disc under External Pressure

Alexandrov

Lyamina

Jeng

2019

MSF

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There are materials whose forward flow curve is practically independent of plastic strain (perfect plasticity) but the Bauschinger effect reduces the elastic range with flow reversal. A new model that is capable of describing such behavior of material under plane stress conditions has been recently proposed. An important class of structures in which the state of stress can often be accurately approximated by plane stress conditions is thin hollow discs. It is therefore of interest to use the new model for determining the distribution of residual stresses in thin discs subject to various loading conditions, followed by unloading. This paper presents a solution for the residual stresses and strains in a hollow hyperbolic disc loading by external pressure, followed by unloading.

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Description of reversed yielding in thin hollow discs subject to external pressure

Cited by 2 publications

References 7 publications

Description of Residual Stresses in Autofrettaged Open-Ended Cylinders Made of High-Strength Steel

Description of Residual Stresses in Autofrettaged Open-Ended Cylinders Made of High-Strength Steel

Influence of the Bauschinger Effect on the Distribution of Residual Stresses in a Thin Hollow Hyperbolic Disc under External Pressure

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