Thermoelastic responses in rotating nanobeams with variable physical properties due to periodic pulse heating

Yahya, A.M.H.; Abouelregal, Ahmed E.; Khalil, Khalil M.; Atta, Doaa

doi:10.1016/j.csite.2021.101443

Cited by 13 publications

(3 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This area of study focuses on the manipulation of minuscule beams or rods, inducing rotational motion inside them. Nanoscale systems possess distinct features and uses, exhibiting behavior that diverges significantly from their macroscopic counterparts [18]. In the context of rotating nanobeams, the term ''rotation'' refers to the angular displacement that the beam exhibits as it revolves around a central axis or point of rotation.…”

Section: Introductionmentioning

confidence: 99%

A modified couple stress model to analyze the effect of size-dependent on thermal interactions in rotating nanobeams whose properties change with temperature

Abouelregal,

Rabih,

Alharbi

et al. 2024

Mathematics and Mechanics of Solids

View full text Add to dashboard Cite

Understanding the behavior of rotating materials and structures on small scales is crucial for many scientific and engineering fields, and such studies play an important role in this regard. This paper aims to propose a novel paradigm for analyzing the vibrational characteristics of thermoelastic nanobeams with diverse physical attributes. The incorporation of size effects in the structural and thermal constitutive relationships involves the consideration of nonlocal elasticity theory (NET) and the modified couple stress (MCS) model, together with the utilization of the Euler–Bernoulli assumptions for thin beams. The work also involves the development of a new non-Fourier thermoelasticity model that incorporates the Moore–Gibson–Thompson (MGT) equation. Furthermore, it was taken into account that the thermal conductivity of the flexible materials is not consistent but rather changes with temperature. Periodic pulse heating was applied to rotating nanobeams, and the behavior of the nanobeams was investigated with respect to thermal, rotational, and length-scale effects. To demonstrate the impact of the distinctive characteristics of the MCS and MGT thermoelastic models on the physical fields, a range of numerical data are presented. The study also investigated the propagation characteristics of thermo-mechanical waves, taking into account aspects such as thermal relaxation time and the influence of temperature change on physical properties. Based on the observed results, including the size impact in the structural and thermal equations can lead to significant disparities when compared to conventional models. The inclusion of the length-scale component in the MCS theory, which increases the rigidity and hardiness of the nanobeam structure, may help to explain the observed effect.

show abstract

Section: Introductionmentioning

confidence: 99%

A modified couple stress model to analyze the effect of size-dependent on thermal interactions in rotating nanobeams whose properties change with temperature

Abouelregal,

Rabih,

Alharbi

et al. 2024

Mathematics and Mechanics of Solids

View full text Add to dashboard Cite

show abstract

“…Zhang et al [57] presented the atomistic simulations of double-walled carbon nanotubes F I G U R E 1 Some realistic applications of rotating micromachined beams (a) microgyroscope with rotary movement of pillars [48] (b) axial microturbine [49] (c) micromachined Gyroscope proposed by National University of Defense Technology (NUDT) [34] (d) Nano-Gyroscope in rotating machine composed of carbon nanotube [50] on rotational bearings. Several works in the literature focused on the dynamic characteristics of rotating small-sized structures [58][59][60][61][62] demonstrating the importance of this topic among researchers and scientists.…”

Section: Introductionmentioning

confidence: 99%

“…[57] presented the atomistic simulations of double‐walled carbon nanotubes on rotational bearings. Several works in the literature focused on the dynamic characteristics of rotating small‐sized structures [58–62] demonstrating the importance of this topic among researchers and scientists.…”

Section: Introductionmentioning

confidence: 99%

Nonlocalized thermal behavior of rotating micromachined beams under dynamic and thermodynamic loads

et al. 2021

Self Cite

View full text Add to dashboard Cite

Rotating micromachined beams are one of the most practical devices with several applications from power generation to aerospace industries. Moreover, recent advances in micromachining technology have led to huge interests in fabricating miniature turbines, gyroscopes and microsensors thanks to their high quality/reliability performances. To this end, this article is organized to examine the axial dynamic reaction of a rotating thermoelastic nanobeam under a constantvelocity moving load. Using Eringen's nonlocal elasticity in conjunction with Euler-Bernoulli theory and Hamilton's principle, the governing equations are derived. It is assumed that the nanobeam is affected by thermal load and the boundary condition is simply supported. The Laplace transform approach is employed to solve the partial differential equations. A numerical example is presented to analyze the effects of the nonlocal parameter, rotation speed and velocity of the static moving load on the dynamic behavior of the system. The numerical results are graphically illustrated and analyzed to recognize the variations of field variables. Finally, in some special cases, our results are compared to those reported in the literature to demonstrate the reliability of the current model.

show abstract

Vibrational behavior of thermoelastic rotating nanobeams with variable thermal properties based on memory-dependent derivative of heat conduction model

2022

View full text Add to dashboard Cite

Thermoelastic responses in rotating nanobeams with variable physical properties due to periodic pulse heating

Cited by 13 publications

References 52 publications

A modified couple stress model to analyze the effect of size-dependent on thermal interactions in rotating nanobeams whose properties change with temperature

A modified couple stress model to analyze the effect of size-dependent on thermal interactions in rotating nanobeams whose properties change with temperature

Nonlocalized thermal behavior of rotating micromachined beams under dynamic and thermodynamic loads

Vibrational behavior of thermoelastic rotating nanobeams with variable thermal properties based on memory-dependent derivative of heat conduction model

Contact Info

Product

Resources

About