Cross-sectional deformation behavior of double-ridged rectangular tube with fillers in different stages of H-typed bending

作     者：Chunmei LIU Yuli LIU Chunmei LIU;Yuli LIU

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.