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.
RENNeng, YANGLüwei, LIJun, et al. Research Progress in Numerical Simulation of Superalloys during Directional Solidification[J]. Special Casting & Nonferrous Alloys, 2023, 43(10): 1336-1350.
[6]
DONGY, BUK, DOUY, et al. Determination of Interfacial Heat-transfer Coefficient during Investment-casting Process of Single-crystal Blades[J]. Journal of Materials Processing Technology, 2011, 211(12): 2123-2131.
LISuwen, ZHANGXueqin, ZHANGKeqiang, et al. Preparation and Mechanical Properties of Ceramic/Polyurea Composite Structures Based on 3D Printed Al2O3 Gradient Lattice Structure[J]. Journal of Anhui Polytechnic University, 2024, 39(1): 22-29.
JINBocheng, LIMing. Study on Properties of Silicon Nitride Ceramics of Lattice Structure Fabricated by 3D Printing[J]. China Ceramics, 2022,58(11): 45-54.
[11]
周海伦.面向增材制造的梯度点阵结构力学性能研究及其拓扑优化应用[D].重庆:重庆大学,2020.
[12]
ZHOUHailun. Research on Mechanical Properties of Gradient Lattice Structures for Additive Manufacturing and Their Application in Topology Optimization[D]. Chongqing:Chongqing University, 2020.
[13]
GAOS, WANGC, XINGB, et al. Experimental Investigation on Bending Behaviour of ZrO2 Honeycomb Sandwich Structures Prepared by DLP Stereolithography[J]. Thin-Walled Structures, 2020, 157: 107099.
[14]
KAFKASLıOĞLU YıLDıZB, YıLDıZA S, KUL M, et al. Mechanical Properties of 3D-printed Al2O3 Honeycomb Sandwich Structures Prepared Using the SLA Method with Different Core Geometries[J]. Ceramics International, 2024, 50(2): 2901-2908.
[15]
HUK, WANGH, LUK, et al. Fabrication of Silica-based Ceramic Cores with Internal Lattice Structures by Stereolithography[J]. China Foundry, 2022, 19(5): 369-379.
LIUDuo, JIANGYuhan, DONGDeyi, et al. Topological Optimization Design of Space Mirror Based on Additive Manufacturing[J]. Journal of Mechanical & Electrical Engineering, 2022, 39(7): 1010-1016.
LIANGZulei, MENGYansong, ZHAOJiaxi, et al. Research Progress on Design, preparation and Properties of Additive Manufacturing Lattice Structures[J]. The Chinese Journal of Nonferrous Metals, 2025, 35(1): 34-56.
[22]
DESHPANDEV S, FLECKN A, ASHBYM F. Effective Properties of the Octet-truss Lattice Material[J]. Journal of the Mechanics and Physics of Solids, 2001, 49(8): 1747-1769.
[23]
DINGG, HER, ZHANGK, et al. Stereolithography-based Additive Manufacturing of Gray-colored SiC Ceramic Green Body[J]. Journal of the American Ceramic Society, 2019, 102(12): 7198-7209.
[24]
LIUY, CHENZ, LIJ, et al. 3D Printing of Ceramic Cellular Structures for Potential Nuclear Fusion Application[J]. Additive Manufacturing, 2020, 35: 101348.
[25]
KIMD H, LEEJ, BAE J, et al. Mechanical Analysis of Ceramic/Polymer Composite with Mesh-type Lightweight Design Using Binder-jet 3D Printing[J]. Materials, 2018, 11(10): 1941.
FANHengliang, LIDasheng, WANGChao, et al. Compression and Sound Absorption Properties of TPMS Porous Structures Fabricated by Additive Manufacturing[J]. China Plastics Industry, 2025, 53(1): 90-95.
WUYaozhong, WANGYahui, LIXuepeng, et al. Finite Element Simulation of Three-point Bending Properties of Triply Periodic Minimal Surface Sandwich Structures with Different Parameters[J]. Materials for Mechanical Engineering, 2024, 48(12): 106-111.
HUANGXinyu, TANGHuayuan, WANGLei. Recent Progress on Some Fundamental Mechanical Properties of TPMS Structures Based on Additive Manufacturing[J]. Chinese Journal of Theoretical and Applied Mechanics, 2024, 56(11): 3099-3115.
WANGZhaolin, ZHANGZhigang, ZHOUJing, et al. Flow and Heat Transfer Characteristics Based on Gyroid Triply Periodic Minimal Surface Heat Exchange Components[J]. Chemical Industry and Engineering Progress, 2025, 44(8): 4454-4462.
[34]
XUD, ZHAOL, LINM. Optimization of Porous Structures via Machine Learning for Solar Thermochemical Fuel Production[J]. Progress in Natural Science: Materials International, 2024, 34(5): 895-906.