中国机械工程 ›› 2025, Vol. 36 ›› Issue (8): 1883-1892.DOI: 10.3969/j.issn.1004-132X.2025.08.023

• 工程前沿 • 上一篇    

船用柴油机机体主轴承孔镗削加工残余应力预测

韩济远1, 张嘉豪2, 展勇3, 张鸿羿3, 曲东越3()   

  1. 1.哈尔滨大电机研究所有限公司, 哈尔滨, 150040
    2.西安航天动力测控技术研究所, 西安, 710025
    3.哈尔滨工程大学机电工程学院, 哈尔滨, 150001
  • 收稿日期:2024-06-11 出版日期:2025-08-25 发布日期:2025-09-18
  • 通讯作者: 曲东越
  • 作者简介:韩济远,男,1998年生,硕士。研究方向为机械制造工艺。
  • 基金资助:
    工业与信息化部船用发动机高可靠性设计和验证关键技术重大专项(CBG5N21-2-1)

Prediction of Residual Stress in Boring Main Bearing Holes of Marine Diesel Engine Bodies

Jiyuan HAN1, Jiahao ZHANG2, Yong ZHAN3, Hongyi ZHANG3, Dongyue QU3()   

  1. 1.Harbin Electric Motor Research Institute Co. ,Ltd. ,Harbin,150040
    2.Xi'an Aerospace Propulsion Control Technology Research Institute,Xi'an,710025
    3.School of Mechanical Engineering,Harbin Engineering University,Harbin,150001
  • Received:2024-06-11 Online:2025-08-25 Published:2025-09-18
  • Contact: Dongyue QU

摘要:

船用柴油机主轴承孔作为船用柴油机机体的关键结构之一,其加工质量直接影响着船用柴油机的整体性能及长期的运行可靠性。为实现对残余应力的预测,采用有限元仿真、响应面模型与加工实验相结合的方法研究了加工参数对表面残余应力的影响规律,确定了以残余应力最小化为目标的切削参数。结果表明:所建的主轴承孔三维镗削加工表面残余应力仿真模型的计算结果和响应面模型预测结果与实际表面残余应力相一致;响应面模型预测精度高于有限元模型,平均预测误差从15.6%减小至2.5%;通过确定切削参数可以有效减小零件的加工残余应力,表面残余应力减小50.6%,切削残余应力减小53.6%,进给残余应力减小46.2%。

关键词: 船用柴油机机体, 镗削加工, 残余应力, 有限元仿真

Abstract:

As a critical structural element of the engine body, the main bearing hole directly affected the engine's overall performances and long-term reliability. For predicting residual stress, methods combining finite element simulation, response surface modelling, and machining experiments were utilized to explore how machining parameters affected surface residual stress, culminating in the determination of cutting parameters focused on minimizing these stresses. The results show that the established three-dimensional simulation model for machining surface residual stress in the main bearing hole correlates well with actual surface residual stress and the predictions of the response surface model. The response surface model achieves higher prediction accuracy than the finite element model, improving the average prediction error from 15.6% to 2.5%. Optimal cutting parameters may reduce machining-induced residual stress significantly, decreasing surface residual stress by 50.6%, cutting residual stress by 53.6%, and feed-induced residual stress by 46.2%.

Key words: marine diesel engine body, boring, residual stress, finite element simulation

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