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Nanoscience and Technology: An International Journal
ESCI SJR: 0.228 SNIP: 0.484 CiteScore™: 0.37

ISSN Print: 2572-4258
ISSN Online: 2572-4266

Nanoscience and Technology: An International Journal

Formerly Known as Nanomechanics Science and Technology: An International Journal

DOI: 10.1615/NanomechanicsSciTechnolIntJ.v2.i4.20
pages 295-308

SURFACE EFFECTS ON NONLOCAL CRITICAL BUCKLING TEMPERATURE OF NANOTUBES

S. Narendar
Defence Research and Development Laboratory, Kanchanbagh, Hyderabad-500 058, India
S. Ravinder
Department of Mechanical Engineering, Vardhaman College of Engineering, Shamshabad, Randa Reddy-501 218, India
S. Gopalakrishnan
Department of Aerospace Engineering, Indian Institute of Science, Bangalore 560012, India

ABSTRACT

Nanotechnology is an emerging technology involving the characterization, design, production, and application of materials, structures, and systems through the control of matter on the nanometer length scale, that is, at the level of atoms and molecules. Nanotubes are being investigated for use as latent materials for drug carriers. However, the surface effects cannot be ignored when drugs or other functional materials, such as nickel or silver, adhere to the surfaces of the nanotube. In this paper, the thermal buckling properties of nanotubes, while accounting for surface effects, are studied using the nonlocal Timoshenko beam model. The influence of the surface elasticity modulus, residual surface stress, nonlocal parameter, modenumber, and aspect ratio are investigated in detail. The results show that the critical buckling temperature is significantly affected by the surface material, nonlocal parameter, buckling mode, and aspect ratio. Plots illustrating such deviations are given to support the present work.


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