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Topology optimization of NURBS-based isogeometric parameterized level set for complex ship structures
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Xue-liang WANG1, 2, Shuai CHEN1, 2, Hui LIU3, Shi-lin ZHANG4, Zheng-jie LI1, 2, Fei LI1, 2, Nan ZHAO1, 2, Xue-feng ZHU4, 5
Journal of Ship Mechanics | 2025, 29(4) : 610 - 618
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Journal of Ship Mechanics | 2025, 29(4): 610-618
• Structural Mechanics •
Topology optimization of NURBS-based isogeometric parameterized level set for complex ship structures
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Xue-liang WANG1, 2, Shuai CHEN1, 2, Hui LIU3, Shi-lin ZHANG4, Zheng-jie LI1, 2, Fei LI1, 2, Nan ZHAO1, 2, Xue-feng ZHU4, 5
Affiliations
  • 1.China Ship Scientific Research Center, Wuxi 214082, China
  • 2.Taihu Laboratory of Deepsea Technology Science, Wuxi 214082, China
  • 3.School of Civil Engineering, Wuhan University, Wuhan 430072, China
  • 4.Faculty of Vehicle Engineering and Mechanics, Dalian University of Technology, Dalian 116024, China
  • 5.State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, Dalian 116024, China
Published: 2025-04-20 doi: 10.3969/j.issn.1007-7294.2025.04.009
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In this paper, a NURBS-based geometric parametric level set topology optimization method is proposed to address the challenges faced by the traditional topology optimization method in seamlessly integrating CAD and CAE and dealing with the fragmentation between geometric modeling, structural analysis, and optimization design for complex ship structures. Firstly, the ship structure is immersed in a three-variable NURBS 3D solid structure. Then, a ray-tracing-algorithm is employed to quickly determine the relevant geometric information of the design domain, boundary, and load application area, such as units and control points, in order to establish the NURBS-based geometric parametric level set topology optimization method. By this method, the limitations of traditional NURBS-based topology optimization, which is restricted by regular NURBS topology, are overcome. The method can handle any complex CAD model. It is demonstrated through numerical examples that the computational efficiency of the algorithm can be improved by more than 30% compared to the traditional geometric SIMP method.

isogeometric analysis  /  topology optimization  /  parameterized level set  /  NURBS  /  complex ship structure
Xue-liang WANG, Shuai CHEN, Hui LIU, Shi-lin ZHANG, Zheng-jie LI, Fei LI, Nan ZHAO, Xue-feng ZHU. Topology optimization of NURBS-based isogeometric parameterized level set for complex ship structures[J]. Journal of Ship Mechanics, 2025 , 29 (4) : 610 -618 . DOI: 10.3969/j.issn.1007-7294.2025.04.009
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Article Info
doi: 10.3969/j.issn.1007-7294.2025.04.009
  • Receive Date：2024-10-19
  • Online Date：2026-03-24
  • Published：2025-04-20
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  • Received：2024-10-19
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Affiliations
    1.China Ship Scientific Research Center, Wuxi 214082, China
    2.Taihu Laboratory of Deepsea Technology Science, Wuxi 214082, China
    3.School of Civil Engineering, Wuhan University, Wuhan 430072, China
    4.Faculty of Vehicle Engineering and Mechanics, Dalian University of Technology, Dalian 116024, China
    5.State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, Dalian 116024, China
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红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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