Buckling analysis of laminated composite thin-walled I-beam under mechanical and thermal loads

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Authors

  • Xuan-Bach Bui Ho Chi Minh City University of Technology and Education, 1 Vo Van Ngan Street, Thu Duc City, Ho Chi Minh City, Vietnam https://orcid.org/0000-0002-7933-2985
  • Anh-Cao Nguyen Ho Chi Minh City University of Technology and Education, 1 Vo Van Ngan Street, Thu Duc City, Ho Chi Minh City, Vietnam https://orcid.org/0000-0001-5100-603X
  • Ngoc-Duong Nguyen Ho Chi Minh City University of Technology and Education, 1 Vo Van Ngan Street, Thu Duc City, Ho Chi Minh City, Vietnam https://orcid.org/0000-0003-0981-5970
  • Tien-Tho Do Ho Chi Minh City University of Technology and Education, 1 Vo Van Ngan Street, Thu Duc City, Ho Chi Minh City, Vietnam
  • Trung-Kien Nguyen CIRTech Institute, HUTECH University, 475A Dien Bien Phu Street, Binh Thanh District, Ho Chi Minh City, Vietnam https://orcid.org/0000-0002-1215-9348

DOI:

https://doi.org/10.15625/0866-7136/17956

Keywords:

thin-walled beam, thermal buckling, buckling analysis, series solution

Abstract

Despite the extensive use of thin-walled structures, the studies on their behaviours when exposed to extreme thermal environment are relatively scarce. Therefore, this paper aims to present the buckling analysis of thin-walled composite I-beams under thermo-mechanical loads. The thermal effects are investigated for the case of studied beams undergoing a uniform temperature rise through their thickness. The theory is based on the first-order shear deformation thin-walled beam theory with linear variation of displacements in the wall thickness. The governing equations of motion are derived from Hamilton's principle and are solved by series-type solutions with hybrid shape functions. Numerical results are presented to investigate the effects of fibre angle, material distribution, span-to-height's ratio and shear deformation on the critical buckling load and temperature rise. These results for several cases are verified with available references to demonstrate the present beam model’s accuracy.

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Published

20-03-2023

How to Cite

[1]
X.-B. Bui, A.-C. Nguyen, N.-D. Nguyen, T.-T. Do and T.-K. Nguyen, Buckling analysis of laminated composite thin-walled I-beam under mechanical and thermal loads, Vietnam J. Mech. 45 (2023) 75–90. DOI: https://doi.org/10.15625/0866-7136/17956.

Issue

Vol. 45 No. 1 (2023)

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Research Article

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