基于附加弯矩的小弯曲半径管自由弯曲数值分析与试验研究  

Numerical Analysis and Experimental Study of Free Bending of Small Bending Radius Pipe Based on Additional Bending Moment

作　　者：周鹏 吴为 徐鑫良 林姚辰 林海松 叶冬冬 ZHOU Peng;WU Wei;XU Xinliang;LIN Yaochen;LIN Haisong;YE Dongdong(AVIC Manufacturing Technology Institute,Beijing 100024,China;Aeronautical Key Laboratory for Plastic Forming Technology,Beijing 100024,China;Key Laboratory of Digital Plasticity Forming Technology and Equipment,Beijing 100024,China;Zhejiang King-Mazon Intelligent Manufacturing Co.,Ltd.,Lishui 321400,China)

机构地区：[1]中国航空制造技术研究院,北京100024 [2]塑性成形技术航空科技重点实验室,北京100024 [3]数字化塑性成形技术及装备北京市重点实验室,北京100024 [4]浙江金马逊智能制造股份有限公司,丽水321400

出　　处：《航空制造技术》2025年第7期100-106,共7页Aeronautical Manufacturing Technology

摘　　要：为了减轻管路系统整体质量,增加可用空间,小弯曲半径管的应用越来越广泛,但在自由弯曲成形技术中,成形小弯曲半径管较为困难。本文基于ABAQUS有限元模拟建立小弯曲半径管自由弯曲成形的有限元模型,分析小弯曲半径管的自由弯曲成形过程,并通过增加附加弯矩的方式来成形相对弯曲半径小于2的管材,试验证明了有限元模型的有效性。通过有限元模拟和自由弯曲试验验证的方法,获得自由弯曲模成形、附加弯矩成形工艺参数与管材成形半径的对应关系,试验表明,弯曲模施加弯矩获得最小相对弯曲半径为2.07,通过增加附加弯矩的方式成形,可使最小相对弯曲半径减小至1.75。In order to reduce the overall weight of pipeline systems and increase available space,the application of small bending radius pipes is becoming increasingly widespread.However,in free bending forming technology,forming small bending radius pipes is more difficult.Based on ABAQUS finite element simulation,this paper establishes a finite element model for the free bending forming of small bending radius pipes,analyzes the free bending forming process of small bending radius pipes,and forms pipes with a relative bending radius less than 2 by adding additional bending moments.The effectiveness of the finite element model is demonstrated through experiments.By means of finite element simulation and free bending test verification,the corresponding relationship between the process parameters of the pipe for free bending die forming and additional bending moment forming and its forming radius was obtained.The experimental results show that,the minimum relative bending radius achieved by the bending die is 2.07.By increasing the additional bending moment for forming,the minimum relative bending radius can be reduced to 1.75.

关 键 词：自由弯曲 小弯曲半径 有限元模拟 附加弯矩 加工工艺 

分 类 号：TG306[金属学及工艺—金属压力加工]