Steel and Composite Structures

  • 제47권3호
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  • Pages.365-374
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  • 2023
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Topology optimization of Reissner-Mindlin plates using multi-material discrete shear gap method

  • Minh-Ngoc Nguyen (Department of Architectural Engineering, Sejong University) ;
  • Wonsik Jung (Department of Architectural Engineering, Sejong University) ;
  • Soomi Shin (Research Institute of Industrial Technology, Pusan National University) ;
  • Joowon Kang (School of Architecture, Yeungnam University) ;
  • Dongkyu Lee (Research Institute of Industrial Technology, Pusan National University)
  • 투고 : 2021.11.29
  • 심사 : 2023.03.06
  • 발행 : 2023.05.10
⟨ 이전 논문 다음 논문 ⟩

초록

This paper presents a new scheme for constructing locking-free finite elements in thick and thin plates, called Discrete Shear Gap element (DSG), using multiphase material topology optimization for triangular elements of Reissner-Mindlin plates. Besides, common methods are also presented in this article, such as quadrilateral element (Q4) and reduced integration method. Moreover, when the plate gets too thin, the transverse shear-locking problem arises. To avoid that phenomenon, the stabilized discrete shear gap technique is utilized in the DSG3 system stiffness matrix formulation. The accuracy and efficiency of DSG are demonstrated by the numerical examples, and many superior properties are presented, such as being a strong competitor to the common kind of Q4 elements in the static topology optimization and its computed results are confirmed against those derived from the three-node triangular element, and other existing solutions.

키워드

과제정보

This research was supported by and the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2022R1A2C1003776) and 2021R1I1A1A01054901.

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