锻压技术

TRB管无补料液压胀形波纹管的研究

英文标题：Research on TRB pipe hydraulic bulging bellows without feeding material

作者：何滔顾栩

单位：云南能源职业技术学院

关键词：TRB管液压胀形均匀壁厚波纹管 S型 V型 U型

分类号：TG394

出版年,卷(期):页码：2023,48(4):103-109

摘要：

首次通过理论设计建立了在无补料液压胀形波纹管时,TRB管参数与S、V、U型波纹管参数的关系，并建立了TRB管液压胀形S型、V型、U型波纹管的有限元模型，验证了无补料液压胀形技术的可行性。有限元模拟结果显示，S型波纹管的最大壁厚差为设计壁厚的8%，壁厚差大部分为设计壁厚的0%~2.25%；V型波纹管的最大壁厚差为设计壁厚的9.33%，壁厚差大部分为设计壁厚的0%~4.17%，壁厚分布均匀。成形极限图显示，S型和V型波纹管的成形应力状态均在安全区内，而U型波纹管在成形过程中发生破裂。因此，TRB管能成形为壁厚均匀的S型和V型波纹管，但不能成形为壁厚均匀的U型波纹管，模拟与理论设计基本吻合。

The relationships between TRB pipe parameters and S-shaped, V-shaped and U-shaped bellows parameters were established by theoretical design to establish the hydraulic bulging bellows without feeding material for the first time, and the finite element models of TRB pipe hydraulic bulging S-shaped, V-shaped and U-shaped bellows were established to verify the feasibility of hydraulic bulging without feeding material. The finite element simulation results show that the maximum wall thickness difference of S-shaped bellow is 8% of the designed wall thickness, and most of the wall thickness difference is 0%-2.25% of the designed wall thickness. The maximum wall thickness difference of V-shaped bellow is 9.33% of the designed wall thickness, most of the wall thickness difference is 0%-4.17% of the designed wall thickness, and the wall thickness is evenly distributed. The forming limit diagram shows that the forming stress states of S-shaped and V-shaped bellows are all within the safety zone, but U-shaped bellows break during the forming process. Therefore, TRB pipes can form S-shaped and V-shaped bellows with uniform wall thickness. But TRB pipes cannot form U-shaped bellows with uniform wall thickness. The simulation is basically consistent with the theoretical design.

基金项目：

云南省教育厅科学研究基金项目（2022J1601）

作者简介：何滔（1977-），男，硕士，副教授 E-mail：728720332@qq.com 通信作者：顾栩（1991-），男，硕士研究生，助教 E-mail：2472183685@qq.com

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