Study on Mechanics Properties of Lightweight Ceramic Core Structure Made of Photopolymerization for Aeroengine Turbine Blades

doi:10.3969/j.issn.1004-132X.2026.06.007

China Mechanical Engineering ›› 2026, Vol. 37 ›› Issue (6): 1353-1361.DOI: 10.3969/j.issn.1004-132X.2026.06.007

Study on Mechanics Properties of Lightweight Ceramic Core Structure Made of Photopolymerization for Aeroengine Turbine Blades

YANG Haoqin¹^,²^,³(), SHAN Zhongde¹^,²^,⁴, YAN Dandan²^,³^,⁴(), WU Runmou⁵, KONG Xianghao³

^1.College of Materials Science and Technology，Nanjing University of Aeronautics and Astronautics，Nanjing，210016
^2.National Key Laboratory for Aerospace Structural Mechanics and Control，Nanjing University of Aeronautics and Astronautics，Nanjing，210016
^3.Wuxi Research Institute，Nanjing University of Aeronautics and Astronautics，Wuxi，Jiangsu，214188
^4.College of Mechanical & Electrical Engineering，Nanjing University of Aeronautics and Astronautics，Nanjing，210016
^5.Nanjing Yangtze River Industrial Technology Research Institute Co. ，Ltd. ，Nanjing，211500

Received:2025-05-08 Online:2026-06-25 Published:2026-07-17
Contact: YAN Dandan

航空发动机涡轮叶片光固化增材制造陶瓷型芯轻量化结构力学性能研究

杨浩秦¹^,²^,³(), 单忠德¹^,²^,⁴, 闫丹丹²^,³^,⁴(), 吴润谋⁵, 孔祥浩³

^1.南京航空航天大学材料科学与技术学院, 南京, 210016
^2.南京航空航天大学航空航天结构力学及控制全国重点实验室, 南京, 210016
^3.南京航空航天大学无锡研究院, 无锡, 214188
^4.南京航空航天大学机电学院, 南京, 210016
^5.南京长江工业技术研究院有限公司, 南京, 211500

通讯作者: 闫丹丹
作者简介:杨浩秦，男，1990年生，副研究员、博士研究生导师。研究方向为航空发动机涡轮叶片超冷结构设计与精准制造技术基础。E-mail：yang-haoqin@nuaa.edu.cn
闫丹丹^*（通信作者）女，1991年生，博士、助理研究员。研究方向为数字化多材料砂型整体打印成形技术与装备和数字化冷冻砂型绿色铸造技术与装备。E-mail：yandandan@nuaa.edu.cn。
基金资助:
江苏省自然科学基金青年项目(BK20230885);航空发动机及燃气轮机重大专项基础研究项目（J2022-Ⅶ-006-0048）;工信部高质量发展专项;华中科技大学材料成形与模具技术全国重点实验室开放基金(P2025-012);上海航天科技创新基金

Abstract

Abstract:

Facing the lightweight manufacturing requirements of ceramic core for aeroengine turbine blade casting， the topology optimization design of lattice structure and the mechanics property regulation mechanism were systematically studied based on the photopolymerization additive manufacturing technology. Through the variable density topology optimization method， 12 kinds of monomer structures were simulated and analyzed. Combined with the actual working load of ceramic core for aeroengine turbine blades， the effects of monomer type， lattice size and filling direction on the performance of lightweight structure were studied. The results show that the triangular honeycomb and hexagonal honeycomb structures have better bearing performance than the curved surface/beam member structure due to the plane connection characteristics and the cooperative stress dispersion mechanism. The triangular honeycomb structure with lattice size of 1.5 mm has better mechanics properties（equivalent stress 15.05 MPa） in the direction of UVW filling. Based on the optimized parameters， the silicon oxide based ceramic core was successfully prepared， with a dimensional error is within ±0.05 mm and a bending strength of 30.7 MPa at room temperature.

Key words: structural design, lattice structure, additive manufacturing, numerical calculation, mechanics property

摘要：

面向航空发动机涡轮叶片铸造用陶瓷型芯的轻量化制造需求，基于光固化增材制造技术，系统研究了点阵结构拓扑优化设计及其力学性能调控机制。通过变密度拓扑优化方法对12类单体结构进行仿真分析，结合航空发动机涡轮叶片铸造用陶瓷型芯实际工况载荷，研究了单体类型、晶格尺寸与填充方向对轻量化结构性能的影响规律。研究结果表明：三角形蜂窝与六边形蜂窝结构因平面连接特性及协同应力分散机制，相较曲面/梁杆结构具有更优承载性能；晶格尺寸为1.5 mm的三角形蜂窝结构在UVW填充方向下力学性能较佳（等效应力15.05 MPa）。基于优化参数成功制备氧化硅基陶瓷型芯，其尺寸误差小于±0.05 mm，常温抗弯强度达30.7 MPa。

关键词: 结构设计, 点阵结构, 增材制造, 数值计算, 力学性能

CLC Number:

TH122

YANG Haoqin, SHAN Zhongde, YAN Dandan, WU Runmou, KONG Xianghao. Study on Mechanics Properties of Lightweight Ceramic Core Structure Made of Photopolymerization for Aeroengine Turbine Blades[J]. China Mechanical Engineering, 2026, 37(6): 1353-1361.

杨浩秦, 单忠德, 闫丹丹, 吴润谋, 孔祥浩. 航空发动机涡轮叶片光固化增材制造陶瓷型芯轻量化结构力学性能研究[J]. 中国机械工程, 2026, 37(6): 1353-1361.

Figures/Tables 16

Fig.1 Flow chart of unit lattice structure design

Fig.2 Boundary condition setting of lattice structure

Fig.3 Simulation results of solid test block

Fig.4 Topological monomer structure

Fig.5 Test block topology

Fig.6 Equivalent stress simulation results of different monomer topologies

Fig.7 Equivalent stress simulation results of different monomer topologies

Fig. 8 Lightweight design effect of triangular honeycomb structure monomer with differentlattice sizes

Fig.9 Lightweight design effect of hexagonal oneycomb structure monomer with different lattice sizes

Fig.10 Effect of lattice size on equivalent force

Fig.11 Lightweight design effect and simulation results in different monomer directions

Fig. 12 Typical ceramic core parts

Fig.13 Lightweight design of ceramic core

Fig.14 Sintering process curve

Fig.15 Typical ceramic core parts with lightweight design

Fig. 16 Typical parts of large wall thickness ceramic core with lightweight design

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Study on Mechanics Properties of Lightweight Ceramic Core Structure Made of Photopolymerization for Aeroengine Turbine Blades

航空发动机涡轮叶片光固化增材制造陶瓷型芯轻量化结构力学性能研究

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Figures/Tables 16

References 23

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