| Structural Vibration Mode Re-Analysis of Offshore Structures |
| |
| 作者单位： | Jin Xianding Sun Renzhang Rrofessor，Dept. of Naval Architecture and Ocean Engineering，Shanghai Jiao Tong University，Shanghai 200030 Engineer，Applied Software Development Center of China State Shipbuilding Corp. Shanghai 200032 |
| |
| 摘 要： | -This paper reviews the current methodology for dynamic reanalysis. Rayleigh-Ritz approach and receptance approach are discussed in detail. Based on a general finite element structural analysis program SAPS, an eigenproblem re-analysis prorgram ERP was compiled. With a very small change the program can be implemented readily with any general FEM program. Finally, some numerical examples show that the new algorithm is of high precision and efficiency. In the case of local modification in the offshore platform, the efficiency is raised by 20- 50 times when compared with the re-calculation of the whole model.
|
Structural Vibration Mode Re-Analysis of Offshore Structures |
| |
| Authors: | Jin Xianding Sun Renzhang Rrofessor Dept of Naval Architecture and Ocean Engineering Shanghai Jiao Tong University Shanghai Engineer Applied Software Development Center of China State Shipbuilding Corp |
| |
| Institution: | Jin Xianding Sun Renzhang Rrofessor,Dept. of Naval Architecture and Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200030 Engineer,Applied Software Development Center of China State Shipbuilding Corp. Shanghai 200032 |
| |
| Abstract: | -This paper reviews the current methodology for dynamic reanalysis. Rayleigh-Ritz approach and receptance approach are discussed in detail. Based on a general finite element structural analysis program SAPS, an eigenproblem re-analysis prorgram ERP was compiled. With a very small change the program can be implemented readily with any general FEM program. Finally, some numerical examples show that the new algorithm is of high precision and efficiency. In the case of local modification in the offshore platform, the efficiency is raised by 20- 50 times when compared with the re-calculation of the whole model. |
| |
| Keywords: | offshore structure eigenproblem reanalysis structural vibration |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《中国海洋工程》浏览原始摘要信息 |
| 点击此处可从《中国海洋工程》下载免费的PDF全文 |
