| 消除"不规则频率"的非连续高阶元方法 |
| |
| 引用本文： | 孙亮,滕斌,张晓兔,何广华.消除"不规则频率"的非连续高阶元方法[J].海洋工程,2004,22(4):51-59. |
| |
| 作者姓名： | 孙亮 滕斌 张晓兔 何广华 |
| |
| 作者单位： | 大连理工大学,海岸和近海工程国家重点实验室,辽宁,大连,116024 |
| |
| 基金项目： | 国家杰出青年基金资助项目(50025924;10372020) |
| |
| 摘 要： | 针对使用边界元法计算波浪与结构物相互作用时所出现的“不规则频率”现象，采用连续高阶元和部分非连续高阶元对通过修改积分区域所获得的边界积分方程进行离散，有效地消除了“不规则频率”现象的发生。波浪作用下的截断圆柱所受到的水平波浪力和垂向波浪力的数值计算结果验证了该方法的有效性，同时考虑了非连续单元配置点的选择及单元划分数目对消除效果的影响。
|
| 关 键 词： | 不规则频率 部分非连续高阶元 边界积分方程 波浪力 |
| 文章编号： | 1005-9865(2004)04-0051-09 |
| 修稿时间： | 2003年10月13 |
Discontinuous higher order boundary element method for removing irregular frequencies |
| |
| SUN Liang,TENG Bin,ZHANG Xiao-tu,HE Guang-hua Dalian University of Technology,Dalian,China.Discontinuous higher order boundary element method for removing irregular frequencies[J].Ocean Engineering,2004,22(4):51-59. |
| |
| Authors: | SUN Liang TENG Bin ZHANG Xiao-tu HE Guang-hua Dalian University of Technology Dalian China |
| |
| Institution: | SUN Liang,TENG Bin,ZHANG Xiao-tu,HE Guang-hua Dalian University of Technology,Dalian 116024,China) |
| |
| Abstract: | In this paper, the phenomenon of irregular frequencies is dealt with in the course of calculating the interaction between waves and structures. The boundary integral equations obtained by the modified integral domain method are discretized by continuous higher order boundary elements and partial discontinuous higher order boundary elements. By this means, the phenomenon of the irregular frequencies is effectively removed. The numerical results of the horizontal and vertical wave forces acting on a truncated cylinder show the present method has a good validity. At the same time, the position of collocation points and of the effect the number of elements on the elimination of the irregular frequencies are considered in detail. |
| |
| Keywords: | irregular frequency partial discontinuous boundary higher order element boundary integral equation wave force |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《海洋工程》浏览原始摘要信息 |
| 点击此处可从《海洋工程》下载免费的PDF全文 |
