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Automatic unstructured mesh generation approach for simulation of electronic packaging system

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Abstract

An automatic unstructured mesh generation approach is presented to discretize complex electronic packaging systems for finite element analysis. Various novel schemes are developed to resolve the common issues (models contain geometrical defects, models contain small but necessary features, simulation properties are predefined on models, etc.) to automate the entire mesh generation pipeline. These schemes include employing Boolean operations with a few technical considerations to resolve the geometrical defects of the original model, defining a sizing function that can adapt to small features, and developing a new data structure named the unified topology model to connect a CAD model and the mesh resulting from the model. The proposed approach can generate quality meshes on certain models with geometrical defects, while state-of-the-art open-source tools (Netgen and Gmsh) generate nonconforming meshes on those models. Tests on complex configurations show that the proposed approach can achieve a speed-up of 3–5 times in comparison with state-of-the-art commercial tools (e.g., COMSOL Multiphysics). Simulation results are provided to demonstrate that the proposed approach can create a mesh with satisfactory quality.

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Acknowledgements

The authors would like to thank the support Zhejiang Provincial Science and Technology Program in China (Grant No.2021C01108) and the Innovative Research Foundation of Ship General Performance in China (Grant No.14022105).

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Authors and Affiliations

  1. School of Aeronautics and Astronautics, Zhejiang University, Hang Zhou, 310027, China

    Kejie Fu, Jianjun Chen, Kaixin Yu & Yao Zheng

  2. State Key Lab of CAD&CG, Zhejiang University, Hang Zhou, 310027, China

    Jianjun Chen

  3. Key Laboratory of Ministry of Education of China for Research of Design and Electromagnetic Compatibility of High Speed Electronic Systems, Shanghai Jiao Tong University, Shanghai, 200240, China

    Jie Li & Min Tang

  4. School of Software Technology, Zhejiang University, Hang Zhou, 310027, China

    Jiangda He

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  1. Kejie Fu
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Fu, K., Chen, J., Li, J. et al. Automatic unstructured mesh generation approach for simulation of electronic packaging system. Engineering with Computers 39, 3527–3559 (2023). https://doi.org/10.1007/s00366-022-01764-w

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