Advances in nano research

  • 제17권1호
  • /
  • Pages.9-18
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  • 2024
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  • 2287-237X(pISSN)
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  • 2287-2388(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Development of the educational management model for dynamic instability analysis in nanocomposite sandwich beam

  • Wenxi Tang (College of Biology and Environmental Sciences, Jishou University) ;
  • Chunhui Zhou (Zhangjiajie Aviation Industry Vocational and Technical College, Sports and Art Department) ;
  • Maryam Shokravi (Energy institute of higher education, Mehrab High School) ;
  • X. Kelaxich (Department of Engineering, Warsaw Industrial)
  • 투고 : 2021.08.14
  • 심사 : 2024.06.17
  • 발행 : 2024.07.25
⟨ 이전 논문 다음 논문 ⟩

초록

This paper presents the development of an educational management model for analyzing the dynamic instability of nanocomposite sandwich beams. The model aims to provide a comprehensive framework for understanding the behavior of sandwich micro beams with foam cores, featuring top and bottom layers made of smart and porous functionally graded materials (FGM) nanocomposites. The bottom layer is influenced by an external electric field, and the entire beam is supported by a visco-Pasternak foundation, accounting for spring, shear, and damping constants. Using the Kelvin-Voigt theory to model structural damping and incorporating size effects based on strain gradient theory, the model employs the parabolic shear deformation beam theory (PSDBT) to derive motion equations through Hamilton's principle. The differential quadrature method (DQM) is applied to solve these equations, accurately identifying the improvement in student understanding (ISU) of the beams. The impact of various parameters, including FGM properties, external voltage, geometric constants, and structural damping, on the DIR is thoroughly examined. The educational model is validated by comparing its outcomes with existing studies, highlighting the increase in ISU with the application of negative external voltage to the smart layer. This model serves as a valuable educational tool for engineering students and researchers studying the dynamic stability of advanced nanocomposite structures.

키워드

과제정보

This work was supported by research project of Ideological and Political Work of Hunan Research Project (number: 23C15): Research on the realistic logic, dilemma and education system construction of college students' mental health education.

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