Dynamic characteristics for system of bearing on the top of first story column based on geometry nonlinearity

2017 2nd International Seminar on Advances in Materials Science and Engineering

Lin, Zhidan^1 ; Xue, Lu^1

City Institute, Dalian Univ. of Tech., Dalian, China^1

关键词: Bending stiffness;    Clamped-free boundary conditions;    Differential quadrature element method;    Dynamic characteristics;    Free vibration;    Governing equations;    Lower order natural frequencies;    Shear distortion;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/231/1/012096/pdf
DOI  :  10.1088/1757-899X/231/1/012096

来源: IOP

【 摘 要 】

According to the serial system of bearing with column, the natural frequency of serial system is investigated, and the effects of axial load and different rubber bearings are discussed. Taking into account the effects of the cross-section rotation, shear distortion and compression axial force, the mathematical model for free vibration of the system is established. The differential quadrature element method is employed for the discrete processing in governing equations and boundary conditions. The natural frequency of serial system with clampedfree boundary conditions is solved numerically, and the figures of natural frequency with compression axial force are presented. It is shown that the axial force will reduce the lower order natural frequencies significantly, and in certain case of total height, the equivalent bending stiffness of rubber bearings reduces the natural frequencies to different extent.