Cross-sectional deformation behavior of double-ridged rectangular tube with fillers in different stages of H-typed bending
Cross-sectional deformation behavior of double-ridged rectangular tube with fillers in different stages of H-typed bending作者机构:Research&Development Institute of Northwestern Polytechnical University in ShenzhenShenzhen 518057China State Key Laboratory of Solidification ProcessingSchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi'an 710072China
出 版 物:《Chinese Journal of Aeronautics》 (中国航空学报(英文版))
年 卷 期:2020年第33卷第6期
页 面:1799-1811页
核心收录:
学科分类:08[工学] 0802[工学-机械工程] 0825[工学-航空宇航科学与技术] 0801[工学-力学(可授工学、理学学位)]
基 金:the Science,Technology and Innovation Commission of Shenzhen Municipality of China(Nos.JCYJ20170306160003433 and JCYJ20180306171058717) 111 Project of China(No.B08040)for the support given to this research
主 题:Cross-sectional deformation FE simulation H96 double-ridged rectangular tube H-typed rotary draw bending Ridge groove fillers Twice-springback stage
摘 要:The bent double-ridged rectangular tube(DRRT)with high forming quality is helpful to improve the microwave transmission *** reducing the cross-sectional deformation in the H-typed bending process,in addition to using rigid mandrel to support the inside of tube,ridge groove fillers are also added to restrict the deformation of ridge *** of the change of stress and strain state of bent tube in bending,rigid mandrel retracting and specially twicespringback stages,and the springback of fillers,the cross-sectional deformation of tube in each stage may be ***,based on the ABAQUS platform,the finite element models(FEM)for H-typed bending,mandrel retracting and twice-springback stages of H96 DRRT with fillers were established and *** is found that,for the height and width deformation of tube and spacing deformation of ridge grooves,retraction of mandrel can make the distribution of these deformations more uniform along the bending *** first springback can reduce these deformations significantly,which should be *** the second springback only increases them by less amount,which can be *** smaller height deformation of ridge groove and filler can be neglected.