Investigation on mitigation of welding deformation on assembly of ship hull block using ultra large scale analysis method

2015 Fiscal Year Final Research Report

• Project/Area Number: 26889052
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Naval and maritime engineering
• Research Institution: Osaka Prefecture University
• Principal Investigator: Ikushima Kazuki 大阪府立大学, 工学(系)研究科(研究院), 助教 (80734003)
• Project Period (FY): 2014-08-29 – 2016-03-31
• Keywords: 有限要素法 / 船体ブロック / 溶接変形 / 非線形解析 / 大変形

Outline of Final Research Achievements

In this research, a new analysis method based on the Idealized Explicit FEM, which can perform large scale simulation and is gathering attention, was developed. In addition, the developed method was applied to the fundamental investigation of welding distortion on the assembly process of ship hull block.
As a result of investigation, it was shown that it is possible to analyze the buckling behavior which includes large change of deformation tendency by using Idealized Explicit FEM. This kind of behavior may cause the collapse of analysis in the conventional method which is based on static implicit FEM. In addition, the developed method was applied to the simulation of the welding deformation on welding assembly process of ship hull block. As a result it was found that the developed method can analyze the large scale problem within the reasonable computing time.

Free Research Field

材料力学、構造力学、溶接力学、計算力学