An isogeometric approach for nonlocal bending and free oscillation of magneto-electro-elastic functionally graded nanobeam with elastic constraints  

作　　者：Thu Huong NGUYEN THI Van Ke TRAN Quoc Hoa PHAM 

机构地区：[1]School of Mechanical and Automotive Engineering,Hanoi University of Industry,Hanoi 100000,Vietnam [2]Faculty of Mechanical Engineering,Le Quy Don Technical University,Hanoi 100000,Vietnam [3]Faculty of Engineering and Technology,Nguyen Tat Thanh University,Ho Chi Minh City 700000,Vietnam

出　　处：《Frontiers of Structural and Civil Engineering》2024年第9期1401-1423,共23页结构与土木工程前沿（英文版）

摘　　要：This work uses isogeometric analysis(IGA),which is based on nonlocal hypothesis and higher-order shear beam hypothesis,to investigate the static bending and free oscillation of a magneto-electro-elastic functionally graded(MEE-FG)nanobeam subject to elastic boundary constraints(BCs).The magneto-electric boundary condition and the Maxwell equation are used to calculate the variation of electric and magnetic potentials along the thickness direction of the nanobeam.This study is innovative since it does not use the conventional boundary conditions.Rather,an elastic system of straight and torsion springs with controllable stiffness is used to support nanobeams’beginning and end positions,creating customizable BCs.The governing equations of motion of nanobeams are established by applying Hamilton’s principle and IGA is used to determine deflections and natural frequency values.Verification studies were performed to evaluate the convergence and accuracy of the proposed method.Aside from this,the impact of the input parameters on the static bending and free oscillation of the MEE-FG nanobeam is examined in detail.These findings could be valuable for analyzing and designing innovative structures constructed of functionally graded MEE materials.

关 键 词：elastic boundary conditions isogeometric analysis nanobeam via nonlocal theory grading of magneto-electro-elastic functions 

分 类 号：TU323.3[建筑科学—结构工程] TB383[一般工业技术—材料科学与工程]