Experimental Study on the Influence of External Excitation Frequency Change on Liquid Sloshing Impact in Elastic Tank

4th International Conference on Energy Equipment Science and Engineering

Zhang, Han-Yu^1 ; Wu, Wen-Feng^1 ; Zhen, Chang-Wen^2 ; Tu, Jiao-Yang^2 ; Wang, Wen^1 ; Yao, Wen-Zhang^1

School of Port and Transportation Engineering, Zhejiang Ocean University, Zhoushan Zhejiang, China^1

School of Naval Architecture and Mechanical-electrical Engineering, Zhejiang Ocean University, Zhoushan Zhejiang, China^2

关键词: Abnormal phenomenon;    External excitation frequency;    Free liquid surface;    Low liquid loading;    Physical model experiments;    Pitching motion;    Resonance frequencies;    Sloshing impacts;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/242/2/022044/pdf
DOI  :  10.1088/1755-1315/242/2/022044

来源: IOP

【 摘 要 】

The sloshing impact of liquid in elastic tank under combined excitation was studied by physical model experiments, and the sloshing impact characteristics of liquid on the side wall of tank with low liquid loading rate under different external excitation frequencies were analyzed. The results show that under the combined excitation of rolling and pitching motion, the sloshing impact load at the free surface is the largest, while the sloshing impact load far from the free liquid surface is smaller. However, when the external excitation frequency of rolling and pitching motion is located at the resonant frequency and larger than resonant frequency, the sloshing impact load in individual regions appears abnormal phenomenon. When the external excitation frequency of rolling and pitching moves from far away from the resonance frequency to near or even slightly beyond the resonance frequency, the sloshing impact load at the free liquid surface presents a small decline stage, a sharp rise stage and a small rise stage, respectively.