A new strategy for springback compensation of spatial tube product in free bending technology

IF 3 2区工程技术 Q2 ENGINEERING, MECHANICAL International Journal of Pressure Vessels and Piping Pub Date : 2024-09-06 DOI:10.1016/j.ijpvp.2024.105305

Shuai Zhang , Zhenming Yue , Aijun Xu , Yusen Li , Yuliang Qiu , Fanjuan Meng

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Abstract

Three-dimensional free bending technology (3D-FBT), as an innovative tube forming process, can achieve complex spatial tube components. However, caused by springback problem how to optimize its forming accuracy for the spatially curved components of tubes is still a major issue. In this study, a springback compensation model for variable curvature tube bending components is constructed and validated based on a developed discretization methodology. The central axis curve of the tube is discretized, and the spatial compensation angles in different cylindrical helix elements were incrementally calculated by a springback analysis model, in which the stress neutral layer offset on the cross-section of the tube induced by axial thrust force. Finally, the validation and accuracy of the proposed methodology is proved through a typical 3D tube component of AL6061. By comparing the numerical and experimental results, it is found that the average shape error of the 3D component is 2.62 mm (24.52 mm without compensation).

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自由弯曲技术中空间管产品回弹补偿的新策略

三维自由弯曲技术（3D-FBT）作为一种创新的管材成型工艺，可以实现复杂的空间管材部件。然而，由于回弹问题，如何优化空间弯曲管件的成形精度仍是一个主要问题。在本研究中，基于开发的离散化方法，构建并验证了变曲率管材弯曲部件的回弹补偿模型。在轴向推力的作用下，管子横截面上的应力中性层发生偏移，通过回弹分析模型对管子的中心轴曲线进行离散化，并逐步计算不同圆柱螺旋元素中的空间补偿角。最后，通过一个典型的 AL6061 三维管组件证明了所提方法的有效性和准确性。通过比较数值结果和实验结果，发现三维部件的平均形状误差为 2.62 毫米（无补偿时为 24.52 毫米）。

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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.