• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2023, Vol. 59 ›› Issue (17): 232-240.doi: 10.3901/JME.2023.17.232

• 数字化设计与制造 • 上一篇    下一篇

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Inconel-718微构件晶粒尺度伪随机建模与仿真

冀寒松1,2, 宋清华1,2, 杜宜聪1,2, 刘战强1,2   

  1. 1. 山东大学机械工程学院 济南 250061;
    2. 山东大学高效清洁机械制造教育部重点实验室 济南 250061
  • 收稿日期:2022-09-03 修回日期:2023-04-15 出版日期:2023-09-05 发布日期:2023-11-16
  • 通讯作者: 宋清华(通信作者),男,1982年出生,博士,教授,博士研究生导师。主要研究方向为高性能切削加工技术与装备、加工过程智能监控、结构振动与控制。E-mail:ssinghua@sdu.edu.cn
  • 作者简介:冀寒松,男,1993年出生,博士后,助理研究员。主要研究方向为晶体材料晶粒尺度建模与仿真。E-mail:hansgji@163.com;杜宜聪,男,1994年出生,硕士。主要研究方向为微切削。E-mail:duyicong@sdu.edu.cn;刘战强,男,1969年出生,博士,教授,博士研究生导师。主要研究方向为切削加工理论与刀具技术、功能结构设计与增材制造、加工过程监控系统开发与智能制造。E-mail:melius@sdu.edu.cn
  • 基金资助:
    国家自然科学基金(51875320,51922066)和山东省自然科学基金(ZR2019JQ19)资助项目。

Grain-scale Pseudorandom Modelling and Simulation for Inconel-718 Miniature Parts

JI Hansong1,2, SONG Qinghua1,2, DU Yicong1,2, LIU Zhanqiang1,2   

  1. 1. School of Mechanical Engineering, Shandong University, Jinan 250061;
    2. Key Laboratory of High Efficiency and Clean Mechanical Manufacture (Ministry of Education), Shandong University, Jinan 250061
  • Received:2022-09-03 Revised:2023-04-15 Online:2023-09-05 Published:2023-11-16

摘要: 现有的晶体材料微构件晶粒尺度力学行为仿真模型未充分考虑材料的晶粒尺度微结构信息,且忽略了零件外形和微结构之间的关联关系,导致仿真精度低、难以推广。面向航空航天领域微小型化发展趋势,针对热端关重件常用的多晶材料Inconel-718,开展了其微构件的晶粒尺度伪随机建模与仿真研究。获取了Inconel-718的真实三维晶粒尺度微结构统计信息,介绍了所开发的考虑几何要素的多晶材料微构件三维伪随机晶粒尺度建模方法。以Inconel-718微柱压缩、微折弯以及微齿轮旋转作为多晶材料微测试、微制造以及微小零件服役仿真案例,强调了在晶粒尺度仿真中考虑构件几何要素的必要性,并展示了所开发建模方法的应用前景。所开发多晶材料微构件晶粒尺度伪随机建模方法可直接实现任意外形Inconel-718微构件的高效准确晶粒尺度建模和力学行为模拟,且便于推广至其他晶体材料的应用中。

关键词: Inconel-718, 微构件, 伪随机, 晶体塑性有限元分析

Abstract: The grain-scale microstructure information of crystalline material is failed to be comprehensively considered in existing grain-scale mechanical behaviour simulation models of crystalline material miniature parts, and the incidence relation between part geometry and microstructure is neglected, which make the models low accuracy and difficult to be popularized. According to the microminiaturization tendency in the aerospace field, grain-scale pseudorandom modelling and simulations of Inconel-718, a conventionally used polycrystalline material for critical parts in high temperature applications, are carried out. The actual 3D microstructure statistical information of Inconel-718 is obtained, and the geometry-considered 3D pseudorandom grain-scale modelling method is introduced. Micro-pillar compression, micro bending and micro-gear rotation simulations are executed as the cases of micro-testing, micro-manufacturing and miniature-part serving. The necessity of considering geometrical features of crystalline material miniature parts during grain-scale simulations is emphasized, and the application prospect of the developed method is demonstrated. The developed grain-scale pseudorandom modelling method for polycrystalline material miniature parts is able to directly achieve grain-scale modelling and mechanical behavior simulation of arbitrary-shaped Inconel-718 miniature parts with high efficiency and accuracy, and it is also convenient to be extended to the application of other crystalline materials.

Key words: Inconel-718, miniature parts, pseudorandom, crystal plasticity finite element analysis

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