Please use this identifier to cite or link to this item:
Full metadata record
DC FieldValueLanguage
dc.contributor.authorLiu, Huen_US
dc.contributor.authorLv, Zhengen_US
dc.contributor.authorWu, Hanen_US
dc.identifier.citationLiu, H., Lv, Z. & Wu, H. (2019). Nonlinear free vibration of geometrically imperfect functionally graded sandwich nanobeams based on nonlocal strain gradient theory. Composite Structures, 214, 47-61.
dc.description.abstractThis paper is devoted to examining the nonlinear vibrational behaviors of functionally graded (FG) sandwich nanobeams in the presence of initial geometric imperfection. Based on the nonlocal strain gradient theory, the governing equation of the FG sandwich nanobeam with consideration of the Von-Karman nonlinearity and initial geometric imperfection is derived. The nonlinear oscillator frequency is obtained with the aid of He's variational principle. Three types of nanobeams, i.e., FG nanobeam (Type A), sandwich nanobeam with homogeneous core and FG skins (Type B), and sandwich nanobeam with FG core and homogeneous skins (Type C) are taken into account. A cosine function similar to the mode shape form is employed to describe the geometric imperfection mode. Firstly, the present theoretical model is verified by comparing with previous perfect FG sandwich beams. Then, several key parameters such as the power-law exponent, the amplitudes of the nonlinear oscillator and the geometric imperfection, as well as the nonlocal and material characteristic parameters are investigated in detail. Finally, apart from the structural types, the influence of thickness distribution scheme is also thoroughly elucidated. The results obtained in this paper are helpful for exploring the FG sandwich design to enhance the mechanical performance of nano-devices.en_US
dc.relation.ispartofComposite Structuresen_US
dc.rights© 2019 Elsevier Ltd. All rights reserved.en_US
dc.subjectEngineering::Mechanical engineeringen_US
dc.subjectEngineering::Civil engineeringen_US
dc.titleNonlinear free vibration of geometrically imperfect functionally graded sandwich nanobeams based on nonlocal strain gradient theoryen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Mechanical and Aerospace Engineeringen_US
dc.contributor.schoolSchool of Civil and Environmental Engineeringen_US
dc.subject.keywordsNonlinear Vibrationen_US
dc.subject.keywordsFunctionally Gradeden_US
item.fulltextNo Fulltext-
Appears in Collections:MAE Journal Articles

Citations 5

Updated on Mar 25, 2023

Web of ScienceTM
Citations 5

Updated on Mar 26, 2023

Page view(s)

Updated on Mar 26, 2023

Google ScholarTM




Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.