微小分布き裂の発生・成長・合体を伴う腐食疲労破壊過程のモンテカルロ解析モデル
微小分布き裂の発生・成長・合体を伴う腐食疲労破壊過程のモンテカルロ解析モデル
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伴随微分布裂纹萌生、扩展和合并的腐蚀疲劳断裂过程的蒙特卡罗分析模型
DOI：
10.2472/jsms.33.14
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发表时间：
1984
期刊：
影响因子：
--
通讯作者：
祐司 中曽根
中科院分区：
文献类型：
--
作者：
英夫 北川;祐司 中曽根
本文提出了光滑无缺口材料疲劳过程的新模型;即光滑无缺口材料的疲劳断裂过程由随机分布的表面小裂纹的萌生、扩展和合并组成的Monte Carlo模拟模型，基于所提出的模型，摘要利用试验结果分析了光滑无缺口HT 60钢腐蚀疲劳中分布裂纹的萌生和扩展行为。分析中考虑了小裂纹萌生位置、表面长度和扩展行为的统计特性，所提出的模型和分析方法可用于结构疲劳累积损伤的评估和可靠性分析。
The present paper proposes a new model of fatigue process for smooth unnotched materials; namely, a Monte Carlo simulation model in which the fatigue fracture process of smooth unnotched materials is composed of the initiation, growth and coalescence of randomly distributed small surface cracks.Based on the model proposed, an analysis was made by using the experimental results on the initiation and growth behavior of distributed cracks in corrosion fatigue of smooth unnotched HT 60 steel. In the analysis, the statistical nature of small cracks in their initiation sites, surface lengths and growth behavior were taken into consideration.The proposed model and analysis may be applicable to the evaluation of fatigue damage accumulated in structures, and can be used in reliability analyses.