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Acta Optica Sinica, Volume. 41, Issue 14, 1411002(2021)

Direct Generation of Triangular Mesh Finite Element Model From Industrial CT Images

Liming Duan1、*, Cheng Fang1,2, Xueqing Luo1,2, Chuandong Tan1,2, and Jinyin Sheng1,2
Author Affiliations
  • 1ICT Research Center, Key Laboratory of Optoelectronic Technology and Systems (Chongqing University), Ministry of Education, Chongqing 400044, China
  • 2College of Mechanical Engineering, Chongqing University, Chongqing 400044, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (17)
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    References (26)
    Cited By (2)
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    Figures & Tables(17)
    CT image of the sample

    Fig. 1. CT image of the sample

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    Boundary of the finite element model of the sample

    Fig. 2. Boundary of the finite element model of the sample

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    Schematic diagram of the unit

    Fig. 3. Schematic diagram of the unit

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    Schematic diagram of CT image unit of the sample

    Fig. 4. Schematic diagram of CT image unit of the sample

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    Schematic diagram of solving the minimizer

    Fig. 5. Schematic diagram of solving the minimizer

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    Minimized value of boundary unit

    Fig. 6. Minimized value of boundary unit

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    Triangulation of triangular mesh

    Fig. 7. Triangulation of triangular mesh

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    Initial finite element model of the sample

    Fig. 8. Initial finite element model of the sample

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    Value of node normal degree

    Fig. 9. Value of node normal degree

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    Edge flip method

    Fig. 10. Edge flip method

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    Unit angle optimization method

    Fig. 11. Unit angle optimization method

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    Definition of the twist angle of the triangular mesh

    Fig. 12. Definition of the twist angle of the triangular mesh

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    Finite element model of sample

    Fig. 13. Finite element model of sample

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    Sample stress nephogram

    Fig. 14. Sample stress nephogram

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    Industrial CT image sequences of cylinder head

    Fig. 15. Industrial CT image sequences of cylinder head

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    Finite element models of CT image of cylinder head. (a) Number 33; (b) number 48; (c) number 50; (d) number 57

    Fig. 16. Finite element models of CT image of cylinder head. (a) Number 33; (b) number 48; (c) number 50; (d) number 57

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    • Table 1. Parameter statistics of finite element model of CT image of cylinder head

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      Table 1. Parameter statistics of finite element model of CT image of cylinder head

      CT image numberNumber of elementsAverage edge length of elements /mmMaximum edge length ratio of mesh element lmaxMaximum twist angle θmax /(°)
      3379451.541.020.09
      4874491.971.310.49
      5087911.321.240.32
      5776621.831.510.51
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    Liming Duan, Cheng Fang, Xueqing Luo, Chuandong Tan, Jinyin Sheng. Direct Generation of Triangular Mesh Finite Element Model From Industrial CT Images[J]. Acta Optica Sinica, 2021, 41(14): 1411002

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    Paper Information

    Category: Imaging Systems

    Received: Sep. 7, 2020

    Accepted: Feb. 5, 2021

    Published Online: Jul. 11, 2021

    The Author Email: Liming Duan (duanliming163@163.com)

    DOI:10.3788/AOS202141.1411002

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology