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A CLOSED FORM SOLUTION OF STRESS INTENSITY FACTORS FOR THREE DIMENSIONAL FINITE BODIES WITH ECCENTRIC CRACKS
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作者 Wang Qizhi, Zhang Xing and Ren BingyiBeijing University of Aeronautics and Astronautics 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 1990年第4期246-257,共12页
In this paper, a new analytical-engineering method of closed form solution about stress intensity factors for three dimensional finite bodies with eccentric cracks is derived by means of energy release rate method. Th... In this paper, a new analytical-engineering method of closed form solution about stress intensity factors for three dimensional finite bodies with eccentric cracks is derived by means of energy release rate method. The results of stress intensity factors can be obtained. The results provided ir this method are in nice agreement with those of the famous alternating method by which only special cases can be solved. 展开更多
关键词 FORM A CLOSED FORM SOLUTION OF STRESS INTENSITY FACTORS FOR three dimensional FINITE BODIES WITH ECCENTRIC CRACKS
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Prediction of Three Dimensional Crack Path Brittle Fracture in Weldment under Dynamic Load
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作者 YANG Da-peng PAN Hai-yang +1 位作者 ZHAO Yao LI Tian-yun 《International Journal of Plant Engineering and Management》 2016年第2期115-128,共14页
Three dimensional dynamic stress intensity factors are analyzed for a curved crack with a second order perturbation method. The method is extended to obtain an approximate representation of a three dimensional dynamic... Three dimensional dynamic stress intensity factors are analyzed for a curved crack with a second order perturbation method. The method is extended to obtain an approximate representation of a three dimensional dynamic stress intensity factors at the tip of a curved crack. Due to three dimensional curved crack growth the dynamic energy release rate can be calculated by using the Irwin's formula. A three dimensional curved crack in materials with inhomogeneous fracture toughness are considered. Paths of a brittle three dimensional curved crack propagating along a welded joint are predicted via the present method, where the effects of dynamic applied stresses, residual stresses, and material deterioration due to welding are taken into considerations. 展开更多
关键词 three dimensional dynamic stress intensity factor curved crack second order perturbation method dynamic energy release rate
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Effect of three dimensional stress state on unstable fracture condition and crack opening level in a new crack growth model 被引量:7
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作者 Fang WANG Weicheng CUI 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2010年第1期41-49,共9页
A new model for the analysis of fatigue crack growth in the metal structures was proposed. This model shows a promising capability of explaining various fatigue phenomena. The new crack growth model is further complet... A new model for the analysis of fatigue crack growth in the metal structures was proposed. This model shows a promising capability of explaining various fatigue phenomena. The new crack growth model is further completed by a continuous empirical formula for estimating the value of variable fracture toughness during crack propagation and a modified continuous equation for the crack tip stress/strain constraint factor used to calculate the stress intensity factor at the opening level. The prediction results are proved to agree well with the observed phenomena in test. 展开更多
关键词 Marine structures Crack growth rate three dimensional stress state Fracture toughness Crack tip stress/strain constraint factor
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