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点阵圆锥壳振动特性研究

发表时间:2017-04-14  浏览量:1473  下载量:268
全部作者: 陈立明,杜冰,杨洋
作者单位: 重庆大学航空航天学院,非均质材料力学重庆市重点实验室
摘 要: 通过有限元(finite element,FE)方法深入研究有无蒙皮对Kagome点阵圆锥壳振动特性的影响。在ABAQUS中建立点阵夹芯圆柱壳模型,并与试验结果对比验证有限元计算的正确性。建立点阵圆锥壳的有限元模型,得到了其在自由边界条件下的振型和频率。对比点阵夹芯圆锥壳、点阵加筋圆锥壳与点阵圆锥壳的振动特性,发现在相同边界条件下,增加蒙皮能够提高点阵圆锥壳的基频,点阵夹芯圆锥壳的基频是点阵圆锥壳的近3倍。
关 键 词: 固体力学;点阵圆锥壳;夹芯;加筋;自由振动;基频
Title: Study on the vibration property of lattice conical shell
Author: CHEN Liming, DU Bing, YANG Yang
Organization: Chongqing Key Laboratory of Heterogeneous Material Mechanics, College of Aerospace Engineering, Chongqing University
Abstract: In this paper, the effect of skin on the vibration property of Kagome lattice conical shell was numerically investigated. Finite element (FE) model of lattice sandwich cylindrical shell was established in ABAQUS and the FE simulation was validated by comparing with the existing experimental results. FE simulation of lattice conical shell was also implemented to get the vibration mode and frequency. Comparison between lattice sandwich conical shell, lattice stiffened conical shell and lattice conical shell were conducted. It is shown that covering with skin can enhance the fundamental frequency of lattice conical shell in the same boundary conditions. Notably, the fundamental frequency of lattice sandwich conical shell is almost triple as high as that of lattice conical shell.
Key words: solid mechanics; lattice conical shell; sandwich; stiffened; free vibration; fundamental frequency
发表期数: 2017年4月第7期
引用格式: 陈立明,杜冰,杨洋. 点阵圆锥壳振动特性研究[J]. 中国科技论文在线精品论文,2017,10(7):764-768.
 
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