1520 個別要素法によるフレッティング疲労き裂進展解析

概要

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Fretting fatigue occurs at contact regions of structural components subjected to contact pressure, friction stress and cyclic fatigue stress. In fretting fatigue the early crack growth is influenced by the magnitude of the above pressure and stresses and its main crack grows in the oblique direction to the contact surface. Therefore, a thorough understanding of the nature of fretting fatigue crack is required to design machines and structures. The authors have applied Distinct Element Method (DEM) to investigation on the crack behavior in fretting fatigue. The conventional scheme of DEM has been improved by modifying properties of spring of elements to solve fatigue stress states. The improved DEM has been used to simulate the microscopic behavior of crack propagation. The results obtained are in well agreement with the experimental results and it was confirmed that this method is useful to simulate the microscopic behavior of crack propagation. in fretting fatigue.
一般社団法人日本機械学会の論文
2000-07-31