Effect of residual stress on the axial buckling behaviour of the hydraulic-formed bellows

IF 3 2区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Pressure Vessels and Piping Pub Date : 2025-02-15 DOI:10.1016/j.ijpvp.2025.105468

Shuang Yu , Zhandong Wan , Jian Lin , Ziang Zhou , Yehui Liu

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引用次数: 0

Abstract

Residual stress is inevitable in the hydraulic-formed process of metal bellows. It is essential to consider the effect of residual stress on buckling behaviour of bellows in order to optimize the stability design. In this paper, a finite element model was developed to analyze the effect of residual stress on the axial buckling behavior of bellows under axial load and internal pressure. The model was validated by theoretical instability modes and formulas of bar system and cylindrical. The influence of residual stress on the buckling behaviour of bellows was discussed under different geometric shapes, material elastic modulus, and service temperatures. The results indicated that the critical instability load decreased under both applied axial load and combined load (axial and internal pressure load) when considering residual stress, while it increased under internal pressure loads. The reduction in axial load amplitude caused by residual stress increases with the increased elastic modulus and the decreased service temperature. The mechanism has been discussed and a pattern for optimizing design was proposed to enhance the stability and reliability of the bellows under complex conditions based on the established model.

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残余应力对液压成形波纹管轴向屈曲行为的影响

在金属波纹管液压成形过程中，残余应力是不可避免的。为了优化波纹管的稳定性设计，必须考虑残余应力对波纹管屈曲行为的影响。本文建立了波纹管在轴向载荷和内压作用下，残余应力对波纹管轴向屈曲行为的影响的有限元模型。通过杆系和柱系的理论失稳模态和失稳公式对模型进行了验证。讨论了不同几何形状、材料弹性模量和使用温度下，残余应力对波纹管屈曲行为的影响。结果表明：考虑残余应力时，轴向载荷和轴向和内压联合载荷作用下的临界失稳载荷均减小，内压作用下的临界失稳载荷增大；随着弹性模量的增加和使用温度的降低，残余应力引起的轴向载荷幅值的减小幅度增大。在此基础上，探讨了波纹管在复杂工况下的稳定性和可靠性，提出了波纹管优化设计模式。

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来源期刊

International Journal of Pressure Vessels and Piping 工程技术-工程：机械

CiteScore

5.30

自引率

13.30%

发文量

208

审稿时长

17 months

期刊介绍： Pressure vessel engineering technology is of importance in many branches of industry. This journal publishes the latest research results and related information on all its associated aspects, with particular emphasis on the structural integrity assessment, maintenance and life extension of pressurised process engineering plants. The anticipated coverage of the International Journal of Pressure Vessels and Piping ranges from simple mass-produced pressure vessels to large custom-built vessels and tanks. Pressure vessels technology is a developing field, and contributions on the following topics will therefore be welcome: • Pressure vessel engineering • Structural integrity assessment • Design methods • Codes and standards • Fabrication and welding • Materials properties requirements • Inspection and quality management • Maintenance and life extension • Ageing and environmental effects • Life management Of particular importance are papers covering aspects of significant practical application which could lead to major improvements in economy, reliability and useful life. While most accepted papers represent the results of original applied research, critical reviews of topical interest by world-leading experts will also appear from time to time. International Journal of Pressure Vessels and Piping is indispensable reading for engineering professionals involved in the energy, petrochemicals, process plant, transport, aerospace and related industries; for manufacturers of pressure vessels and ancillary equipment; and for academics pursuing research in these areas.