充气尾翼湿模态分析与试验研究
发布时间:2018-01-05 16:09
本文关键词:充气尾翼湿模态分析与试验研究 出处:《振动与冲击》2016年15期 论文类型:期刊论文
更多相关文章: 充气尾翼 空气附加质量 UEL 干模态 湿模态
【摘要】:为分析复杂形状充气尾翼的模态特性,基于势流理论和预应力刚化模型,提出采用单元尺度的三角形单元等效单元面积特征参数,建立三角形单元附加质量的计算方法,应用Abaqus的UEL二次开发建立了数值分析方法。通过经典的平面圆形薄膜试验验证了方法,并对复杂形状充气尾翼的模态进行了分析与试验,两者结果吻合较好。对飞艇等复杂充气结构模态特性研究具有参考价值。
[Abstract]:In order to analyze the modal characteristics of the aerated tail wing with complex shape, based on the potential flow theory and the prestress rigidization model, the equivalent area characteristic parameters of triangular elements with element size are proposed. The calculation method of the additional mass of triangle element is established, and the numerical analysis method is established by using Abaqus's UEL secondary development. The method is verified by classical planar circular film test. The modal analysis and test of the aerated tail wing with complex shape are carried out and the results are in good agreement with each other. It is valuable to study the modal characteristics of the airship and other complicated inflatable structures.
【作者单位】: 上海交通大学空间结构研究中心;
【基金】:国家自然科学基金(51278299;51478264)
【分类号】:V214
【正文快照】: 充气尾翼是典型气囊式充气膜结构,在对其进行风振响应分析时,由于膜结构柔度较大,当结构自身振动时,结构周围的流体也随之振动。在研究结构自振特性时,可将流体的作用作为附加质量进行分析,与轻质薄膜结构一致,附加质量对充气膜结构的振动模态的影响十分显著,大型膜结构的实测,
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