Abstract：For water-filled multi-stiffened sandwich structure , modal analysis expended too much time when the coupling of inner water and structure was considered. To overcome this difficulty, a kind of alternative additional mass method based on ABAQUS was put forward. Simultaneously the applicability of additional mass method was discussed, which was on the basis of the analysis of different radius and height of water-filled cylindrical shell. In order to evaluate directly the fluid effects on natural frequency of the structure, the concept of fluid participation factors was introduced. It was pointed out that the calculation results of additional mass method was accurate when the fluid participation factors were close to 1. Finally, additional mass method was adopted for the modal calculation of water-filled multi-stiffened sandwich structure, which was compared with the test results. The results showed that additional mass method was feasible.
收稿日期: 2015-05-14
出版日期: 2016-07-25
引用本文:
武大江，梅志远，王永历. 充水密加筋夹层结构固有特性仿真及试验研究[J]. 振动与冲击, 2016, 35(15): 134-139.
WU Dajiang，MEI Zhiyuan，WANG Yongli. Natural characteristic simulation and experiment research of water-filled multi-stiffened sandwich structure. JOURNAL OF VIBRATION AND SHOCK, 2016, 35(15): 134-139.
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