A pathway to refined stress and strain distributions in aerospace-grade Ti/Al bi-metal sheets:Synergizing theoretical insights and FEM simulations  

作　　者：Rihuan LU Yutong LIU Meihui LI Meng YAN Jingna SUN Huagui HUANG 

机构地区：[1]National Engineering Research Center for Equipment and Technology of Cold Rolled Strip,Yanshan University,Qinhuangdao 066004,China [2]School of Mechanical Engineering,Yanshan University,Qinhuangdao 066004,China [3]Northeast Refining and Chemical Engineering Limited Liability Company,Chinese Petroleum Group Company,Shenyang 110015,China

出　　处：《Chinese Journal of Aeronautics》2024年第11期493-516,共24页中国航空学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.52005432,51674222);the Natural Science Foundation of Hebei Province of Iron and Steel Research(No.E2021203179);the Chinese Post-doctoral Science Foundation(No.2020M680904);the Foundation of Hebei Province Post-Doctoral Preferred Project(No.B2020003011)。

摘　　要：This study introduces an innovative theoretical model critical for predicting stress and strain distributions in Ti/Al bi-metal sheet production and its subsequent deep drawing process.Grounded in extensive mechanical and geometric analysis,the model facilitates manufacturing process optimization and the production of high-quality components.Finite Element Method(FEM)simulations are integrated to examine the significant effects of die geometric parameters on metal flow dynamics and susceptibility to material stress.The model's precision is enhanced by incorporating anisotropic material properties and cohesive zone models.A rigorous experimental framework validates the model,highlighting the practical utility of optimized parameters in Ti/Al bimetal component fabrication.Additionally,uniaxial tensile tests using the Video Image Correlation-3D(VIC-3D)system provide detailed insights into material deformation,elucidating stress distribution and metal flow in composite layers.Thus,the research presents a refined methodology for the efficient production of Ti/Al bi-metal components,offering valuable knowledge transferable to various materials and processing scenarios.The findings of this work are expected to make a significant impact on material engineering and mechanical manufacturing.

关 键 词：Ti/Al bi-metal sheets Deep drawing Finite Element Method Die geometric parameters Material Properties 

分 类 号：V252[一般工业技术—材料科学与工程]