3529 応力比が疲労き裂進展特性に及ぼす影響のRPG荷重による解析(S14-2 FLARPによる疲労き裂発生伝播シミュレーション(2),S14 FLARPによる疲労き裂発生伝播シミュレーション)

抄録

This paper shows the analysis result of the effect of the stress ratio on the fatigue crack growth behavior using RPG load based on the comparison between the FE-analysis results and estimation results by FLARP system. Crack opening stress during fatigue crack is growing, independent of stress ratio, but the increase in plastic strain at the re-plastic zone depends on the stress ratio. The re-plastic zone size is almost same as the size of re-compressive plastic zone.