Deformation characterization method of typical double-walled turbine blade structure during casting process
作者机构：School of Aerospace EngineeringXiamen UniversityXiamen 361005FujianChina AECC Commercial Aircraft Engine Co.Ltd.Shanghai 200241China
出 版 物：《Journal of Iron and Steel Research(International)》 (钢铁研究学报（英文版）)
年 卷 期：2023年第30卷第10期
页 面：2010-2020页
核心收录：
学科分类：08[工学] 0804[工学-仪器科学与技术] 0802[工学-机械工程] 0714[理学-统计学（可授理学、经济学学位）] 0701[理学-数学] 080201[工学-机械制造及其自动化]
基 金：This research was funded by the National Natural Science Foundation of China(Grant Number 51705440) the Natural Science Foundation of Fujian Province,China(Grant Number 2019J01044) the Aeronautical Science Foundation of China(Grant Number 20170368001) the National Science and Technology Major Project of China(Nos.J2019-III-0008 and J2019-VII-0013-0153)。
主 题：Turbine blade Double-walled structure Deformation decoupling Expansion/shrinkage model Structure-deformation mapping
摘 要：To address the complex structures,large out-of-tolerance issues,and inconsistent quality of double-walled turbine blades,a mapping relationship between the structure and deformation was established based on a structural correlation study.Numerical simulations and pouring experiments were carried out based on the designed double-walled model,and a reliable displacement field model of the double-walled blade was established.A decoupling method for the displacement field of the double-walled blade castings was proposed,which decoupled the displacement field into bending,torsion,and expansion/shrinkage deformation vectors.Based on the displacement field analysis of the theoretical and physical models,an expansion/shrinkage model of double-walled blade structure castings was established.Furthermore,an experiment to determine the mapping relationship between double-walled construction and deformation was designed,which included the characteristic distribution distance and designed angle as structural parameters.The functional relationship between the deformation and the structural parameters was established based on a nonlinear regression method.
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