锻压技术

单侧并列双支管内高压成形应力与应变分析及金属流动研究

英文标题：Research on stress, strain and metal flow in hydroforming for unilateral parallel double branch tube

作者：陈名涛肖小亭周富强

分类号：TG394

出版年,卷(期):页码：2021,46(4):106-110

摘要：

为了掌握单侧并列多支管内高压成形时的塑性变形规律，以并列双支管为例，采用数值模拟方法，结合管件形状，分析其应力、应变状态和金属流动规律。研究结果表明：并列双支管在轴向压缩和内压力的共同作用下，支管顶部由于承受双向拉应力，导致壁厚减薄，顶部厚向应变为压应变。支管两侧圆角区由于受到三向压应力使得壁厚增加，圆角区厚向应变为拉应变，支管外侧圆角比内侧圆角的壁厚增加更显著。由于两支管之间（内侧）的主管材料难以流向支管，导致支管仅靠单边轴向压缩完成补料，使得支管中心向内偏移，支管形状呈现非对称结构，从而限制了支管的成形高度。

To investigate the plastic deformation law of unilateral parallel multi-branch tube in hydroforming, for the parallel double branch tube, its stress and strain states as well as metal flow law were analyzed by numerical simulation method and combined with the shape of tube. The results show that under the combined action of axial compression and internal pressure for parallel double branch tube, the wall thickness at the top of branch tube is reduced due to the bidirectional tensile stress, and the strain along the thickness direction at the top is compressive strain. Furthermore, the wall thickness of fillet areas on both sides of branch tube is increased due to the three-directional compressive stress, the strain along the thickness direction at the fillet area is tensile strain, and the thickening on the outer fillet of branch tube is more significant than that on the inner fillet. However, because the main tube material between the two branch tubes (inside) is difficult to flow to the branch tube, the branch tube only relies on unilateral axial compression to complete the filling, which makes the branch tube center shift inward, and the branch tube shape presents an asymmetric structure, which limits the forming height of branch tube.

基金项目：

广东省教育厅青年创新人才科技项目(2020KQNCX077)；2019 年度韶关学院校级科研项目(SY2019ZK01)；韶关市2019年科技计划（社会发展与企业科技特派员方向)项目(2019sn054)；韶关学院科研启动项目(44099000618)；2019年佛山市核心技术攻关项目（1920001001369）

陈名涛（1990-），男，博士 E-mail：cmt9090@163.com

参考文献：

［1］Bell C, Corney J, Zuelli N, et al. A state of the art review of hydroforming technology: Its applications, research areas, history, and future in manufacturing
［J］. International Journal of Material Forming，2020, 13(5): 789-828.

［2］Lee M G, Korkolis Y P, Kim J H . Recent developments in hydroforming technology
［J］. Proceedings of the Institution of Mechanical Engineers Part B Journal of Engineering Manufacture, 2014, 229(4):572-596.

［3］Yuan S, He Z, Liu G . New developments of hydroforming in China
［J］. Materials Transactions, 2012, 53(5):787-795.

［4］王文彬，朱梅云. 基于汽车轻量化的管材内高压成形技术研究
［J］. 锻压装备与制造技术，2018, 53(6): 82-84.

Wang W B，Zhu M Y. Research on tube hydroforming technology based on automobile lightweight
［J］. China Metalforming Equipment & Manufacturing Technology，2018, 53(6): 82-84.

［5］Abbassi F, Ahmad F, Gulzar S, et al. Design of T-shaped tube hydroforming using finite element and artificial neural network modeling
［J］. Journal of Mechanical Science and Technology，2020, 34(3): 1129-1138.

［6］Xu X, Wu K, Wu Y, et al. A novel lubrication method for hydroforming of thin-walled aluminum alloy T-shaped tube
［J］. The International Journal of Advanced Manufacturing Technology，2019, 102(5-8): 2265-2273.

［7］彭俊阳，罗德高，滕步刚，等. 薄壁Y型三通管内高压成形起皱与开裂分析
［J］. 材料科学与工艺, 2017, 25(4): 11-16.

Peng J Y，Luo D G，Teng B G，et al. Analysis on wrinkling and cracking initiation in hydroforming thin-walled Y-shaped tubes
［J］. Materials Science & Technology, 2017, 25(4): 11-16.

［8］朱书建，李健，林贤坤，等. 基于正交试验法的T型三通管内高压成形仿真与优化
［J］. 锻压技术,2018, 43(9): 75-82.

Zhu S J, Li J, Lin X K, et al. Simulation and optimization on hydroforming of T-shape tube based on orthogonal experiment
［J］. Forging & Stamping Technology, 2018, 43(9): 75-82.

［9］Wen H D, Xiao X T, Tan L G, et al. The influence of process parameters on the branch height for air handling unit
［J］. Advanced Materials Research, 2011, 314-316: 759-762.

［10］童江槐，肖小亭，陈名涛，等. 进给冲头与背压对并列双支管液压成形性能的影响
［J］. 锻压技术, 2019, 44(1): 73-79.

Tong J H，Xiao X T，Chen M T，et al. Influence of feeding punch and back pressure on formability in hydroforming process for parallel double-branch tube
［J］. Forging & Stamping Technology, 2019, 44(1): 73-79.

［11］Chen M T, Xiao X T, Tong J H, et al. Optimization of loading path in hydroforming of parallel double branched tube through response surface methodology
［J］. Advances in Engineering Software，2018, 115: 429-438.

［12］陈名涛，肖小亭，刘易凡，等. 内压和加载路径对并列双支管内高压成形性的影响
［J］. 塑性工程学报， 2017，24(5): 19-24.

Chen M T，Xiao X T，Liu Y F，et al. Effects of internal pressure and loading path on hydroforming of parallel arrangement multi-way tube
［J］. Journal of Plasticity Engineering, 2017，24(5): 19-24.

［13］李洪洋，苑世剑，王小松，等. 内高压成形工艺的应力应变及工艺失稳分析
［J］. 哈尔滨工业大学学报，2006, 38(9): 1515-1517.

Li H Y, Yuan S J, Wang X S, et al. Stress and strain state of tube hydroforming and it′s influence on destabilization
［J］.Journal of Harbin Institute of Technology, 2006, 38(9): 1515-1517.

服务与反馈：

【文章下载】【加入收藏】