THE FLEXOELECTRIC EFFECT OF NANOBEAM BASED ON A REFORMULATED STRAIN GRADIENT ELASTICITY
To accurately predict the flexoelectric response of nanobeam-based energy harvesting, a reformulated strain gradient elasticity theory is employed to derive an electromechanical model of nanobeam.Three independent material length scale parameters are incorporated to capture the size effect.The governing equation and boundary conditions are derived by applying the Hamilton principle for the simply supported beam.The closed-form analytical solutions to the bending response with mechanical and electric loads applied are obtained.The results show that the strain gradient elasticity can decrease the transverse displacement of the simply supported beam and significantly reduce the energy efficiency.Therefore, the strain gradient elasticity shouldnt be ignored when studying the flexoelectric responses of nanoscale structures.
Flexoelectricity Strain gradient elasticity Energy harvesting Piezoelectricity
Xu YANG Ya-rong ZHOU Kun-yu YAO Bing-lei WANG
Department of Engineering Mechanics, School of Civil Engineering, Shandong University, Jinan, 250061, P.R.China
国际会议
哈尔滨
英文
434-437
2019-01-11（万方平台首次上网日期，不代表论文的发表时间）