2000 Fiscal Year Final Research Report Summary
Study on high-precise zooming analysis of ship structures using multi-grid method
| Project/Area Number |
10555337
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B).
|
| Allocation Type | Single-year Grants |
|---|
| Section | 展開研究 |
|---|
| Research Field |
船舶工学
|
|---|
| Research Institution | The University of Tokyo |
|---|
Principal Investigator |
SUZUKI Katsuyuki The University of Tokyo Graduate School of Frontier Sciences Associate Prof., 大学院・新領域創成科学研究科, 助教授 (10235939)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
OHTSUBO Hideomi The University of Tokyo Graduate School of Engineering Proffessor, 大学院・工学系研究科, 教授 (20011132)
|
|---|
| Project Period (FY) |
1998 – 2000
|
| Keywords | Multi grid method / Overlaying mesh method / Zooming analysis / global element / Finite element method / ship structure |
|---|
| Research Abstract |
The overlaying mesh finite element method, which uses global and local mesh that overlies each other, is applied for 2 dimensional elastostatic problem and plate bending problem. The results are compared with the traditional zooming analysis, in which displacement or load boundary conditions obtained by global analysis are given to local analysis. It was shown that while the accuracy of zooming analysis greatly depends on the size of the global mesh, the overlying mesh analysis generally gives quite good results even when coarse mesh is used in global analysis. Also the method that repeat local and global analysis iteratively is proposed, which makes it possible to use general purpose FEM code in overlaying mesh method, and it was shown that using under relaxation the convergence speed increase.
|
