有限要素法による船体構造の弾塑性座屈解析

概要

論文の詳細を見る
Buckling strength is one of the most important problems in the local strength of hull structures, and the establishment of the analytical method is desired. In the previous paper, the authors studied theoretical analysis on elastic buckling of hull structures by the finite element method. However, in high stress zone as a bracket corner and a slot corner, hull structures locally yield at lower load than buckling load, and show the behaviour of elastic-plastic buckling. In this case, it is almost impossible to clarify buckling strength by elastic analysis. Therefore, authors studied elastic-plastic buckling analysis for the purpose of applications to the hull structures, and developed a computer program by the finite element method. To verify the method, comparisons were made between the experimental results and the theoretical predictions in cases of (1) a square plate with a circular hole compressed under the simply supported condition along all edges, (2) a bracket model compressed at both sides, and (3) web plate models with slots for longitudinals under docking condition. They were satisfactory and indicated the usefulness of the method.
社団法人日本船舶海洋工学会の論文
1971-07-31