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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Structural Engineering and Mechanics, An Int'l Journal Structural Engineering and Mechanics, An Int'l Journal Vol.76 No.6
- 발행연도
- 2020.1
- 수록면
- 765 - 779 (15page)
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This article presents a nonclassical size dependent model based on the modified couple stress theory to study and analyze the bending behavior of perforated microbeams under different loading patterns. Modified equivalent material and geometrical parameters for perforated beam are presented. The modified couple stress theory with one material length scale parameter is adopted to incorporate the microstructure effect into the governing equations of perforated beam structure. The governing equilibrium equations of the perforated Timoshenko as well as the perforated Euler Bernoulli are developed based on the potential energy minimization principle. The Poisson’s effect is included in the governing equilibrium equations. Regular square perforation configuration is considered. Based on Fourier series expansion, closed forms for the bending deflection and the rotational displacements are obtained for simply supported perforated microbeams. The proposed methodology is validated and compared with the available results in the literature and an excellent agreement is detected. Numerical results demonstrated the applicability of the proposed methodology to investigate the bending behavior of regularly squared perforated beams incorporating microstructure effect under different excitation patterns. The obtained results are significantly important for the design and production of perforated microbeam structures.
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참고문헌 (76)
참고문헌 신청
Alaa A. Abdelrahman / 2019 / Free and forced analysis of perforated beams / Steel and Composite Structures, An International Journal 31(5):489~502
Abdelrahman, A. A. / 2020 / Static bending of perforated nanobeams including surface energy and microstructure effects / Engineering with Computers :1~21
Alashti, R. A. / 2014 / A size-dependent Bernoulli-Euler beam formulation based on a new model of couple stress theory / J. Eng 27(6):951~960
Agwa, M. A. / 2016 / Vibration of a carbyne nanomechanical mass sensor with surface effect / Appl. Physics A 122(4):335
Khalid H. Almitani / 2019 / On forced and free vibrations of cutout squared beams / Steel and Composite Structures, An International Journal 32(5):643~655
Abdelrahman, A. A. / 2020 / Static bending of perforated nanobeams including surface energy and microstructure effects / Engineering with Computers :1~21
Alashti, R. A. / 2014 / A size-dependent Bernoulli-Euler beam formulation based on a new model of couple stress theory / J. Eng 27(6):951~960
Agwa, M. A. / 2016 / Vibration of a carbyne nanomechanical mass sensor with surface effect / Appl. Physics A 122(4):335
Khalid H. Almitani / 2019 / On forced and free vibrations of cutout squared beams / Steel and Composite Structures, An International Journal 32(5):643~655
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