液压胀形四通管的TRB坯料设计与优化

张渝; 蒋国保; 陈真一; 何嘉宁; 越豪杰

doi:10.3969/j.issn.1674-6457.2025.10.017

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精密成形工程 ›› 2025, Vol. 17 ›› Issue (10) : 175-182. DOI: 10.3969/j.issn.1674-6457.2025.10.017

先进制造技术与装备

液压胀形四通管的TRB坯料设计与优化

张渝^*, 蒋国保, 陈真一, 何嘉宁, 越豪杰

作者信息 +

Design and Optimization of TRB Blanks for Hydraulic Bulging Four-way Tubes

ZHANG Yu^*, JIANG Guobao, CHEN Zhenyi, HE Jianing, YUE Haojie

Author information +

文章历史 +

摘要

目的为了解决四通管液压胀形过程中壁厚分布不均的问题,设计一种连续变厚度的管坯。方法首先,对等厚管坯进行液压胀形仿真,分析壁厚变化规律,并基于仿真结果提出连续变厚度管坯设计方案;其次,采用正交试验法研究管坯厚度变化规律,得出连续变厚度管坯厚区和过渡区的关键参数;最后,结合泛克里金模型和多目标粒子群算法,对管坯设计进行多目标优化,获得最佳参数。结果优化后的连续变厚度管坯壁厚均匀性得到了显著提高。有限元仿真验证结果表明,相对最大减薄率和平均厚度值相对误差均在2%以内,壁厚均匀值较等厚管坯减少了0.22 mm。结论相比于传统等厚管坯,连续变厚度管坯可显著改善四通管液压胀形的壁厚均匀性,提高产品质量。

Abstract

To solve the uneven thickness of four-way tubes in hydraulic bulging, the work aims to design a continuous variable thickness tube blank. Firstly, according to the hydraulic bulging simulation of four-way tubes with the equal thickness tube blank, the change law of wall thickness was analyzed, and the design scheme of continuous variable thickness tube blank was proposed based on the simulation results. Secondly, the orthogonal test method was used to study the change law of tube blank thickness, and the key parameters of the thickness zone and transition zone of the continuous variable thickness tube blank were obtained. Finally, combined with the Universal Kriging Model and multi-objective particle swarm optimization algorithm, the optimal parameters were obtained by multi-objective optimization of the tube blank design. The wall thickness uniformity of the optimized continuous variable thickness tube blank was significantly improved. The finite element simulation results showed that the relative errors of the maximum relative thinning rate and the average thickness were less than 2%, and the uniform value of the wall thickness was reduced by 0.22 mm compared with the constant thickness tube blank. Compared with the traditional constant thickness tube blank, the continuous variable thickness tube blank can significantly improve the uniformity of the wall thickness of the four-way tube in hydraulic bulging and improve the product quality.

导出引用

张渝, 蒋国保, 陈真一, 何嘉宁, 越豪杰. 液压胀形四通管的TRB坯料设计与优化[J]. 精密成形工程. 2025, 17(10): 175-182 https://doi.org/10.3969/j.issn.1674-6457.2025.10.017

ZHANG Yu, JIANG Guobao, CHEN Zhenyi, HE Jianing, YUE Haojie. Design and Optimization of TRB Blanks for Hydraulic Bulging Four-way Tubes[J]. Journal of Netshape Forming Engineering. 2025, 17(10): 175-182 https://doi.org/10.3969/j.issn.1674-6457.2025.10.017

中图分类号： TG386

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