Determination of the response distributions of cantilever beam under sinusoidal base excitation

4th Symposium on the Mechanics of Slender Structures

物理学;力学

Sun, Wei^1 ; Liu, Ying^1 ; Li, Hui^1 ; Pan, Dejun^1

School of Mechanical Engineering, Automation Northeastern University, Shenyang 110819, China^1

关键词: Base excitation;    Dynamic characteristics;    Force equilibrium equations;    Response distribution;    Response prediction;    Sinusoidal base excitation;    Test and analysis;    Vibration response;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/448/1/012010/pdf
DOI  :  10.1088/1742-6596/448/1/012010

学科分类：力学，机械学

来源: IOP

【 摘 要 】

As a kind of base excitation, shaking table is often used to test the dynamic characteristics of structures. However, the prediction of response to base excitation hasn't been solved effectively, which limits the further research on the test and analysis method with respect to base movement. This article is based on a cantilever beam and focuses on its response prediction under sinusoidal base excitation. By moment and force equilibrium equations, an analytical model is built for this cantilever beam, and then a method to predict dynamic response at base excitation is proposed. Finally, the method is used to solve the vibration response distributions of the cantilever beam at base excitation. Correctness of this method is also proved by comparing the result with experimental data.