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Uncoupled vibrations in cracked functionally graded beams with temperature-dependent properties

Do Nam, Nguyen Tien Long, Phi Thi Hang, Nguyen Tien Khiem
Author affiliations

Authors

  • Do Nam \(^1\) VNU University of Engineering and Technology, 144 Xuan Thuy, Cau Giay Ward, Hanoi, Vietnam
  • Nguyen Tien Long \(^2\) Institute of Mechanics and Environment Engineering, VUSTA, 264 Doi Can, Ngoc Ha Ward, Hanoi, Vietnam
  • Phi Thi Hang \(^3\) Electric Power University, 235 Hoang Quoc Viet, Nghia Do Ward, Hanoi, Vietnam
  • Nguyen Tien Khiem \(^4\) CIRTECH Institute, HUTECH University, 475A Dien Bien Phu, Thanh My Tay Ward, Ho Chi Minh City, Vietnam https://orcid.org/0000-0001-5195-2704

DOI:

https://doi.org/10.15625/0866-7136/24104

Keywords:

functionally graded material, cracked beam, thermal effect, uncoupled vibration

Abstract

In the present study, the free vibration of cracked temperature-dependent functionally graded Euler--Bernoulli beams is addressed using the power law of material gradation and double spring model of a transverse open crack. Under the assumptions of ignoring inertia for rotation and axial deformation, discomposed longitudinal and bending vibrations are investigated for temperature-dependent multiple-cracked functionally graded beams. Hence, the effect of the material gradation index, temperature rise distribution, and cracks on the natural frequencies of the decoupled vibration modes is examined. Numerical results show that the longitudinal wave speed and the natural frequencies of both the longitudinal and bending vibrations decrease with an increasing material fraction index and temperature rise. It is also revealed that there is a significant effect of material gradation and temperature on the sensitivity of the beam natural frequencies to crack location and depth.

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Published

12-06-2026

How to Cite

Nam, D., Long, N. T., Hang, P. T., & Khiem, N. T. (2026). Uncoupled vibrations in cracked functionally graded beams with temperature-dependent properties. Vietnam Journal of Mechanics. https://doi.org/10.15625/0866-7136/24104

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