書誌事項
- タイトル別名
-
- On Reliability Evaluation of a Structure for Fatigue under Service Loads with Rain Flow Method and Fatigue Limit Diagram
- レインフローホウ ト ヒロウ ゲンドセンズ オ モチイタ ジツドウ カジュウ ヒロウ ニ タイスル コウゾウブツ シンライセイ ヒョウカ
この論文をさがす
抄録
A service load like random load has been analyzed by the rain flow method extensively. When the reliability of a structure is estimated, mean stresses on fatigue life are probably ignored because it is not easy to measure. The purpose of this study is to propose a practical estimation method of a structural reliability for fatigue under service loads by Miner's law. In addition, the fatigue tests to obtain S-N curve is carried out under constant amplitude loading. However, the each stress ratio of cyclic stress counted with rain flow method is different. In the proposed method, the effect of stress ratio has been considered by fatigue limit diagram with failure probability. On this diagram, the increment of cumulative cycle ratio ΔDpf for each cyclic stress can be calculated with failure probability by a computer program. The expected life Npf is defined as the period when Dpf reaches 1.0. If we assume the ergodicity of the sampling time T, Npf is T/Dpf. It gives fatigue life distribution, when a structure is under service loads. In conclusion, we have got a reliability curve of the structure for fatigue life. This curve can be obtained with service load or design stress easily by using our developed program. This proposed method is practical and the industrial applicability is wide.
収録刊行物
-
- 材料
-
材料 54 (1), 8-12, 2005
公益社団法人 日本材料学会
- Tweet
キーワード
詳細情報 詳細情報について
-
- CRID
- 1390282680394628224
-
- NII論文ID
- 110006266374
-
- NII書誌ID
- AN00096175
-
- ISSN
- 18807488
- 05145163
-
- NDL書誌ID
- 7220883
-
- 本文言語コード
- ja
-
- データソース種別
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- 抄録ライセンスフラグ
- 使用不可