三维钝裂纹的边界元模拟和剩余腐蚀疲劳寿命估算方法

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 1994, Vol. 15 ›› Issue (3): 269-274.

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BOUNDARY ELEMENT METHOD SIMULATION AND CORROSION FATIGUELIFE PREDICTION FOR 3-D BLUNT CRACKS

Zhang Yongyuan, Ruan Guohua

Department of Engineering Mechanics,Shanghai Jiaotong University,Shanghai,200030

Received:1993-02-19 Revised:1993-07-06 Online:1994-03-25 Published:1994-03-25

Abstract

Abstract: A calculation model for 3-D blunt cracks in proposed and the corresponding boundary element method(BEM)computer program system is also established.The corrosion fatigue life calculation method for components with 3-D blunt crack is discussed using available model for fatigue crack growth.Calculations are for 3-D plates with surface blunt crack in air and in sea water.The results show that both the method and the BEM program proposed are val-id for both fatigue growth ofsharp cracks and fatigue growth of 3-D blunt cracks.

Key words: 3-D blunt crack, stress-corrosion fatigue, boundary element method(BEM), stress intensity factor(SIF)

CLC Number:

Zhang Yongyuan;Ruan Guohua. BOUNDARY ELEMENT METHOD SIMULATION AND CORROSION FATIGUELIFE PREDICTION FOR 3-D BLUNT CRACKS[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 1994, 15(3): 269-274.

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BOUNDARY ELEMENT METHOD SIMULATION AND CORROSION FATIGUELIFE PREDICTION FOR 3-D BLUNT CRACKS

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