沈阳航空航天大学学报2024，Vol.41Issue(2)：21-29,9.DOI:10.3969/j.issn.2095-1248.2024.02.003
航空发动机外部管路支架优化设计与应用
Optimized design and application of aero-engine external pipeline bracket
摘要
Abstract
In response to the crack at the installation side of a certain engine pipeline bracket,the re-search direction for solving the failure problem was clarified through analysis of the fracture at the bracket crack and the static strength stress of the bracket components.From aspects of part design,pro-cessing and assembly,the cause of the problem was determined to be the interaction stress between the bracket and the pipeline,which made the bracket work under original vibration stress and additional stress introduced during assembly.Due to the strong rigidity of the bracket components and weak buff-ering under stress load,the stress generated from bracket elastic deformation would be transmitted to the hole edge,probably causing the formation of cracks.The improvement with floating structure was designed which has the ability of axial deformation compensation and can significantly reduce the stress transmission.The proposed optimization design was validated by experiments and tests.关键词
裂纹/弹性变形/浮动结构/变形补偿/管路支架/航空发动机Key words
crack/elastic deformation/floating structure/deformation compensation/pipeline brack-et/aero-engine分类
航空航天引用本文复制引用
迟岑,程景煜,张栓,孙越..航空发动机外部管路支架优化设计与应用[J].沈阳航空航天大学学报,2024,41(2):21-29,9.基金项目
航空动力基础研究(项目编号:******) （项目编号:******）
