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摘要
针对某发动机管路支架安装边裂纹问题，通过对支架裂纹处断口的分析，及对支架组件的静强度受力分析，明确解决失效问题。从零件设计、加工、装配3方面着手，确定失效原因为支架与管路之间存在相互作用力，支架工作时除受振动应力影响外还承受装配时引入的额外应力。因支架组件刚性较强，受力后缓冲较弱，支架弹性变形所产生的作用力会传递至孔边，易产生裂纹。设计了增加浮动结构的改进方案，其具备轴向变形补偿能力，可以大幅降低传递至孔边的作用力。经试验验证，该措施可行、有效。
关键词
裂纹
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弹性变形
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浮动结构
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变形补偿
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管路支架
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航空发动机
Key words
crack
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elastic deformation
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floating structure
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deformation compensation
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pipeline bracket
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aero-engine
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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 DOI:10.3969/j.issn.2095-1248.2024.02.003
基金资助
航空动力基础研究项目（项目编号：******）
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