Dawei Li (李大伟)

Assistant Professor, Ph.D.
School of Mechanical Engineering
Nanjing University of Science and Technology

Address: No.200 Xiaolingwei Street, Nanjing, Jiangsu Province
Email: ldw@njust.edu.cn



I am currently an Assistant Professor at Nanjing University of Science and Technology (NJUST), and I joined the microsatellite design and integral manufacturing team led by Prof. Wenhe Liao in 2020. I received my PhD from Nanjing University of Aeronautics and Astronautics (NUAA) in 2019, under the supervision of Prof. Wenhe Liao. I also studied in Additive Design and Manufacturing Lab (ADML) led by Prof. Yaoyao Fiona Zhao at McGill University, Canada during 2017-2018.

My research interests include innovative metamaterial/metastructure design, artificial intelligence-aided design, electromagnetic wave-absorbing material design, and topology optimization.


Professional Activities



  • Electromagnetic Metastructures
  • The work presented here proposes a novel EM-wave-absorbing metastructure with an isotropic morphology inspired by the gyroid microstructures seen in Parides sesostris butterfly wings. A matching redesign methodology between the material and subwavelength scale properties of the gyroid microstructure is proposed, inspired by the interaction mechanism between the microstructure and the material properties on the EM-wave-absorption performance of the prepared metastructure.


  • AI-aided Design for Metastructures
  • Controllable anisotropy of the microscale lattice metastructures is the key to achieving designable mechanical properties of the macrostructures. However, a current computational challenge is precisely controlling the anisotropy of the design domain containing an ultra-large number of lattice structural units. In this work, we decompose the large-scale design domain into several mesoscale subregions and propose an artificial intelligence-aided design method that can automatically control the anisotropic properties of the mesoscale design domain.


  • Bionic Metastructure Design and Optimization
  • Inspired by the strengthening mechanism of crystal twinning boundary, this work proposes a novel strategy for lattice metamaterial design to improve stiffness, strength, and toughness. At the microscale, the inclination variable of unit-cell is introduced into the analytical formula of modulus in the compression direction. At the scale of periodic macro-array, to achieve the best mechanical properties in the compression direction without sacrificing the mechanical properties in the horizontal direction, twinning boundaries are introduced into both horizontal and vertical directions of the structure.


  • Lattice Structure Multi-scale Design and Optimization
  • In this work, we present a novel anisotropic lattice structure design and multi-scale optimization method that can generate conformal gradient lattice structures (CGLS). The goal of optimization is to achieve gradient density, adaptive orientation and variable scale (or periodic) lattice structures with the highest mechanical stiffness. The asymptotic homogenization method is employed for the calculation of the mechanical properties of various lattice structures.


    Selected Publications

    Note: * Corresponding author, # Co-first authors.

  • Chengtao Sun#, Dawei Li#*, Tingting Liu, Qing An, Changdong Zhang, Wenhe Liao. Manuscript Title: Design of Functionally Gradient Metastructure with Ultra-broadband and Strong Absorption. 2024, Submitted.
  • Ruijang Fan#, Dawei Li#*, Tingting Liu, Changdong Zhang, Xiangjia Li, Tengteng Tang, Wenhe Liao*. Metastructure Coding Design with Tortuosity and Connectivity Principle for Electromagnetic Absorption. 2024, Submitted.
  • 2023
  • Zhongkai Ji#, Dawei Li#*, Wenhe Liao, Yi Min Xie. AI-aided design and multi-scale optimization of mechanical metastructures with controllable anisotropy. 2023, Submitted.
  • Kanghui Song#, Dawei Li#*, Wenhe Liao, Tingting Liu, Changdong Zhang*, Yi Min Xie. Glass-sponge-inspired 3D heterogeneous metastructure with excellent mechanical properties. 2023, Submitted.
  • Gang Wang#, Dawei Li#*, Tingting Liu, Changdong Zhang, Yi Min Xie, Wenhe Liao*. Design and manufacturing of lightweight modular broadband microwave absorbing metastructure. Composites Part B: Engineering, 2023.
  • Xinze Shen, Changdong Zhang, Xiuyi Jia, Dawei Li, Tingting Liu*, Sukun Tian, Wei Wei, Yuchun Sun*, Wenhe Liao*. TranSDFNet: Transformer-Based Truncated Signed Distance Fields for The Shape Design of Removable Partial Denture Clasps. IEEE Journal of Biomedical and Health Informatics, 2023.
  • Qing An#, Dawei Li#*, Wenhe Liao*, Tingting Liu, Dylan Joralmon, Xiangjia Li, Junming Zhao. A Novel Ultra-wideband Electromagnetic Wave-absorbing Metastructure Inspired by Bionic Gyroid Structures. Advanced Materials, 2023: 2300659.
  • Kanghui Song#, Dawei Li#*, Changdong Zhang, Tingting Liu, Yunlong Tang, Yi Min Xie, Wenhe Liao*. Bio-inspired hierarchical honeycomb metastructures with superior mechanical properties. Composite Structures, 2023, 304: 116452.
  • 2022
  • Zhongkai Ji#, Dawei Li#*, Wenhe Liao, Yi Min Xie. AI-aided design of multiscale lattice metastructures for controllable anisotropy. Materials & Design, 2022, 223: 111254.
  • Kanghui Song#, Dawei Li#, Tingting Liu, Changdong Zhang*, Yi Min Xie, Wenhe Liao*. Crystal-twinning inspired lattice metamaterial for high stiffness, strength, and toughness. Materials & Design, 2022, 221: 110916.
  • Rui Dai#, Dawei Li#, Wenhe Liao, Haofan Sun, Yunlong Tang, Qiong Nian*. Molecular dynamics simulations to understand the mechanical behavior of functional gradient nano-gyroid structures. Journal of Applied Physics, 2022, 132(13): 135109.
  • Haobin Hu, Wenhe Liao, Tingting Liu, Qing An, Liming Hou, Xiang Zhang, Dawei Li. Dual-polarized Frequency-selective Rasorbers with Two Transmission Bands. 2022 IEEE 5th International Conference on Electronics Technology (ICET). IEEE, 2022: 896-900
  • Tingting Liu, Zuoheng Liang, Fangxi Ren, Wenhe Liao, Changdong Zhang, Dawei Li. Design of Lightweight Multi-Lattice Structure and Mechanical Property Analysis of Transition Boundaries. Aeronautical Manufacturing Technology, 2022, 65(14): 110-117.
  • 2021
  • Fangxi Ren, Changdong Zhang*, Wenhe Liao, Tingting Liu, Dawei Li, Xin Shi, Weiming Jiang, Cong Wang, Junfeng Qi, Yi Chen, Zhen Wang. Transition boundaries and stiffness optimal design for multi-TPMS lattices. Materials & Design, 2021, 210: 110062.
  • Xin Shi, Wenhe Liao*, Tingting Liu*, Changdong Zhang, Dawei Li, Weiming Jiang, Cong Wang, Fangxi Ren. Design optimization of multimorphology surface-based lattice structures with density gradients. The International Journal of Advanced Manufacturing Technology, 2021, 117(7): 2013-2028.
  • 2020
  • Dawei Li, Wenhe Liao, Ning Dai*, Yi Min Xie. Anisotropic Design and Optimization of Spatially Gradient Lattice Structures. Computer-Aided Design, 2020, 119: 102787
  • Zhenyang Gao, Dawei Li, Guoying Dong, Yaoyao Fiona Zhao*. Crack path-engineered 2D octet-truss lattice with bio-inspired crack deflection. Additive Manufacturing, 2020, 36: 101539.
  • Guoying Dong, Yunlong Tang, Dawei Li, Yaoyao Fiona Zhao*. Design and optimization of solid lattice hybrid structures fabricated by additive manufacturing. Additive Manufacturing, 2020, 33: 101116.
  • Hao Liu*, Lei Liu, Dawei Li, Renkai Huang, Ning Dai. An approach to partition workpiece CAD model towards 5-axis support-free 3D printing. The International Journal of Advanced Manufacturing Technology, 2020, 106(1): 683-699.
  • Xin Zhou, Ning Dai*, Mingqiang Chu, Lei Wang, Dawei Li, Lei Zhou, Xiaosheng Cheng. X-ray CT analysis of the influence of process on defect in Ti-6Al-4V parts produced with Selective Laser Melting technology. The International Journal of Advanced Manufacturing Technology, 2020, 106(1): 3-14.
  • Xiaotong Jiang, Ning Dai, Changdong Zhang, Baosu Guo, Dawei Li, Changwen Li. A Semi-Automatic Precise Tooth Segmentation Algorithm of Dental Model. Journal of Computer-Aided Design & Computer Graphics, 2020, 32(5): 820-829
  • 2019
  • Dawei Li, Wenhe Liao, Ning Dai*, Yi Min Xie. Comparison of Mechanical Properties and Energy Absorption of Sheet-based and Strut-based Gyroid Cellular Structures with Graded Densities. Materials, 2019, 12(13): 2183
  • Dawei Li, Ning Dai*, Yunlong Tang, Guoying Dong, Yaoyao Fiona Zhao*. Design and Optimization of Graded Cellular Structures with Triply Periodic Level Surface-based Topological Shapes. Journal of Mechanical Design, 2019: 1-18
  • Jinqiang Wang, Xiaosheng Chen, Ning Dai*, Dawei Li, Xin Zhou, Yunlong Tang. Programmable Shape-shifting from Planar Sheets to Curved Geometries via Front Photopolymerization Approach. Journal of Mechanical Engineering, 2019, 55(13): 175-184,194.
  • Longwei Ding, Ning Dai*, Xiaoming Mu, Shaohui Xie, Xu Fan, Dawei Li, Xiaosheng Cheng. Design of soft multi-material pneumatic actuators based on principal strain field. Materials & design, 2019, 182: 108000.
  • Jinqiang Wang, Xiaoming Mu, Dawei Li, Changjiang Yu, Xiaosheng Cheng, Ning Dai*. Modeling and Application of Planar-to-3D Structures via Optically Programmed Frontal Photopolymerization. Advanced Engineering Materials, 2019, 21(5): 1801279.
  • Wei Chen, Ning Dai*, Jinqiang Wang, Hao Liu, Dawei Li, Lele Liu. Personalized design of functional gradient bone tissue engineering scaffold. Journal of Biomechanical Engineering, 2019, 141(11).
  • 2018
  • Dawei Li, Wenhe Liao, Ning Dai*, Guoying Dong, Yunlong Tang, Yi Min Xie. Optimal design and modeling of gyroid-based functionally graded cellular structures for additive manufacturing. Computer-Aided Design, 2018, 104: 87-99
  • Dawei Li, Ning Dai*, Xin Zhou, Renkai Huang, Wenhe Liao. Self-supporting interior structures modeling for buoyancy optimization of computational fabrication. The International Journal of Advanced Manufacturing Technology, 2018, 95(1-4): 825-834
  • Renkai Huang, Ning Dai*, Dawei Li, Xiaosheng Cheng, Hao Liu, Dengguang Sun. Parallel non-dominated sorting genetic algorithm-II for optimal part deposition orientation in additive manufacturing based on functional features. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2018, 232(19): 3384-3395.
  • Guoying Dong, Yunlong Tang, Dawei Li, Yaoyao Fiona Zhao*. Mechanical properties of continuous kevlar fiber reinforced composites fabricated by fused deposition modeling process. Procedia Manufacturing, 2018, 26: 774-781.
  • Xin Zhou, Ning Dai*, Dawei Li, Dengguang Sun, Jinqiang Wang, Xiaosheng Chen. Optimization technology of DLP 3D printing process based on controllable strength of support. Computer Integrated Manufacturing Systems, 2018, 24(09):22-28
  • 2017
  • Ning Dai*, Dawei Li, Xu Yang, Cheng Cheng, Yuchun Sun. Research and primary evaluation of an automatic fusion method for multisource tooth crown data. International Journal for Numerical Methods in Biomedical Engineering, 2017, 33(11): e2878.
  • 2016
  • Dawei Li, Ning Dai*, Xiaotong Jiang, Xiaosheng Chen. Interior structural optimization based on the density-variable shape modeling of 3D printed objects. The International Journal of Advanced Manufacturing Technology, 2016, 83(9-12): 1627-1635
  • Dawei Li, Ning Dai*, Xiaotong Jiang, Yu Zhang, Xiaosheng Chen. 3D Parametric Modeling Technique of Bionic Sharkskin Denticle. Journal of Mechanical Engineering, 2016, 52(23): 182-188.
  • Presentation

  • Dawei Li; Design, Simulation and Optimization of Functionally Graded Lattice Structures (FGLS) for Additive Manufacturing, 2019 International Conference on Research Advances in Additive Manufacturing, Nanjing, CHINA, 2019-3-4
  • Honors & Awards

    2023第一届全国先进结构技术挑战赛特等奖(安庆、王港、曲植、樊瑞疆), 指导老师: 李大伟 2023
    2023届南京理工大学优秀毕业设计(计忠凯、孙成涛,并被推荐省优), 指导老师: 李大伟 2023
    2023年第四届全国高校航空航天类专业本科毕业设计成果交流会特等奖, 指导老师: 李大伟 2023
    2022届南京理工大学优秀毕业设计(陈翔), 指导老师: 李大伟 2022
    2021年度江苏省科学技术奖一等奖 2021
    2021年度南京航空航天大学优秀博士学位论文 2021
    2019 Journal of Mechanical Design Editors' Choice Honorable Mention 2020
    2019年度研究生国家级奖学金 2019
    2018年度工信部创业奖学金“二等奖” 2018
    2017年度“江苏省优秀学术学位硕士研究生论文” 2017
    2016年中国国际飞行器设计挑战赛暨科研类全国航空航天模型锦标赛“一等奖” 2016
    2015年度研究生国家级奖学金 2015

    Host Projects

    GF Foundation Technology Fund 280w 2021-2024
    GF Technology Innovation Project 120w 2021-2023
    National Natural Science Foundation of China 30w 2020-2023


    2023SpringPython Programming
    2023/2022FallAdvanced Material Processing and Application Technology
    2023/2022FallAdvanced Manufacturing Technology and Equipment (II)