利用含内缺口的圆环试件,用实验和计算的方法,研究了两种铝合金在混和应力场下的孔边裂纹萌生特性,并利用扩孔形成的残余应力和变形,探讨对延迟裂纹继续发展产生的作用.扩孔残余应力场的存在使萌生裂纹的循环周次得到提高,对于Ⅰ型应力场,延迟裂纹萌生的效果非常明显,而对于Ⅰ型和Ⅱ型混合应力场,延迟裂纹萌生的效果较弱.
参考文献
| [1] | Ahmad J;ASHBAUGH N E.Constant K crack-propagation test specimens[J].International Journal of Fracture,1982(19):115-129. |
| [2] | Cheverton R D;BRYSON J W;ALEXANDER D J;SLOT T .Thermal-shock experiments flawed clad cylinders[J].Nuclear Engineering and Design,1990,124(1-2):109-119. |
| [3] | Nunomura S;ODA Y.A mixed-mode fatigue crack propagation test using a cracked ring[A].ESIS,1993:75-81. |
| [4] | Hui-Ji Shi;Li-Sha Niu;Gerard Mesmacque;Zhong-Guang Wang .Branched crack growth behavior of mixed-mode fatigue for an austenitic 304L steel[J].International Journal of Fatigue,2000(6):457-465. |
| [5] | Erdogan F;SIH G C .On the crack extension in plates under plane loading and transverse shear[J].Journal of Basic Engineering,Transactions of the ASME,1963,85:519-527. |
| [6] | Sih G C .Strain-energy-density factor applied to mixed mode crack problems[J].International Journal of Fracture,1974,10(03):305-321. |
| [7] | Cotterell B;RICE J R .Slightly curved or kinked cracks[J].International Journal of Fracture,1980,16(02):155-169. |
| [8] | Narasimhan R;Roy YA .A finite element investigation of the effect of crack tip constraint on hole growth under mode I and mixed mode loading[J].International Journal of Solids and Structures,1999(10):1427-1447. |
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