Transactions of Materials and Heat Treatment

Title：Analysis on integral bending characteristics for double-wall gap composite tube

Authors： Zhang Rongxia Wu Wei Zeng Yuansong Chen Fulong

Unit： Beijing Aeronautical Manufacturing Technology Institute Aeronautical Key Laboratory for Plastic Forming Technologies Beijing Key Laboratory of Digital Plasticity Forming Technology and Equipment

KeyWords： double-wall gap composite tube bending forming characteristic wall thickness contact analysis

ClassificationCode：TG306；V261.2+8

year,vol(issue):pagenumber：2021,46(4):166-171

Abstract：

The stress and strain distribution, wall thickness distribution and contact between each component of double-wall gap composite tube during the integral bending process were analyzed by finite element method to reveal the forming characteristics of bending process. The results show that compared with single-layer tube, the equivalent strain of the inner tube for double-layer tube was little different, but the outer tube was significantly larger, indicating that cracks are more likely to occur and the difficulty of detect control is increased. In addition, the middle filler between inner and outer tubes has relative displacement with inner and outer tubes during the bending process to generate the friction force, and the friction force between outer tubes is opposite to the bending direction resulting in an increases in the thinning of wall thickness and the uneven wall thickness distribution. After measuring the wall thickness of test piece, it is verified that the results of finite element simulation are consistent with the rules of test results, and the finite element simulation process has an effective guiding role for physical tests.

Funds：

航空科学基金（2013ZE25006）

张荣霞（1979-），女，硕士，高级工程师 E-mail：zrxia1979@163.com

Reference：

［1］胡安辉，周立江，高伟.发动机燃油管断裂故障分析
［J］. 失效分析与预测，2012，7（3）：192-196.

Hu A H,Zhou L J,Gao W. Failure analysis of fuel oil pipe in an areo-engine
［J］. Failure Analysis and Prediction,2012,7(3):192-196.

［2］傅国如，陈荣，吕凤军，等.发动机燃油供油导管断裂失效分析
［J］.失效分析与预防，2007，2（7）：29-33.

Fu G R,Chen R,Lyu F J,et al.Fracture failure analysis of a fuel pipe in an aero-engines
［J］. Failure Analysis and Prediction, 2007，2（7）：29-33.

［3］方军.21-6-9高强不锈钢管数控绕弯成形规律研究
［D］.南京：南京航空航天大学，2015.

Fang J.Study on Forming Rules of 21-6-9 High-strengh Stainless Steel Tubes in NC Rotary Draw Bending Process
［D］.Nanjing:Nanjing University of Aeronautics and Astronautics,2015.

［4］李小曼，李善良，张冶，等. 大直径薄壁导管数控弯曲成形技术浅析
［J］.轻合金加工技术，2019，47（11）：47-51.

Li X, Li S L,Zhang Y,et al. Brief analysis on NC bending forming technology of large diameter thin-walled pipe
［J］. Light Alloy Fabrication Technology，2019，47（11）：47-51.

［5］钱峰，潘笑誉，叶小奔，等.基于ABQUAS的管件弯曲成型的有限元分析
［J］.机械工程与自动化，2017, (4):19-24.

Qian F，Pan X Y，Ye X B,et al. ABAQUS based finite element analysis of marine pipe in bending process
［J］. Mechanical Engineering & Automation, 2017, (4):19-24.

［6］宋彬，米智楠，吴仁智，等.无缝钢管数控弯管过程有限元模拟分析
［J］.流体传动与控制，2016，(2):1-4.

Song B, Mi Z N, Wu R Z,et al.Finite element analysis of seamless steel tube NC bending
［J］. Fluid Power Transmission and Control,2016，(2):1-4.

［7］刘碧颖，李恒，李龙，等.引入材料参数的弯管中性层偏移解析模型
［J］.航空学报，2016,37(3):1074-1082.

Liu B Y，Li H，Li L，et al. Analytical model of neutral layer shift in tube bending introducing material parameters
［J］.Acta Aeronautica et Astronautica Sinica,2016,37(3):1074-1082.

［8］田玉丽，杨合，李恒，等.6061-T4大直径薄壁管数控弯曲壁厚变化实验研究
［J］. 材料科学与工艺，2012，20(2):23-29.

Tian Y L,Yang H,Li H,et al.Experimental study on wall thickness variation in NC bending of 6061-T4 large diameter thin-walled tubes
［J］.Materials Science and Technology,2012,20(2):23-29.

［9］樊胜宝，鲍益东，王雯，等.航空导管弯曲试验自动建模与后处理
［J］.航空制造技术，2018，61 (16) : 59-65.

Fang S B，Bao Y D,Wang W, et al.Automatic modeling and post-processing of aviation tube bending forming
［J］.Aeronautical Manufacturing Technology，2018，61 (16) : 59-65.

［10］王新鹏，刘劲松，张士宏，等.薄壁铜管绕弯截面畸变的数值模拟及实验研究
［J］.沈阳理工大学学报，2013，32（4）：77-81.

Wang X P，Liu J S，Zhang S H,et al. Numerical simulation and experiment of section distortion of rotary draw bending of copper tube
［J］. Journal of Shenyang Ligong University,2013, 32(4):77-81.

［11］贾美慧，唐承统，王文刚. 工艺参数对管材绕弯成形质量的显著性影响分析
［J］.机床与液压，2012，40（21）:29-33.

Jia M H，Tang C T，Wang W G. Significant influence of process parameters on tube forming quality in rotary-draw bending
［J］.Machine Tools and Hydraulics,2012，40(21)：29-33.

［12］李佳佳，刘郁丽，赵刚，等. 工艺参数对薄壁矩形管绕弯成形失稳起皱影响的显著性分析，金属铸锻焊技术
［J］.2010,39（13）：77-80.

Li J J, Liu Y L, Zhao G,et al. Study on significant influence of process parameters on wrinkling of rotary-draw bending formation of thin walled rectangular tube
［J］.Casting Forging Welding，2010,39（13）：77-80.

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