5083S (175 C/240 hrs) are comparable in all Kt, except at the smallest Kt = 3 where the fracture resistance of 5083R is higher; and (7) the fracture paths are transgranular and the fracture mode is ductile void coalescence in all cases, irrespective of the stress concentration factor.Pao...
Stress Intensity Factors and Crack Interaction in Adjacent HolesStress intensity factorPart-ellipticalFinite element analysisVirtual crack closure techniqueThrough crackOblique frontCrack interactionIn this analytical investigation, stress intensity factors, K, are calculated for oblique part-elliptical through ...
Includes the crack 40CrNiMo gear material test sample to stop the crack strengthening after the pulse electric discharge, on the one hand the crack point place circle was obtuse, is smooth, reduced the crack point place stress concentration factor; On the other hand, cracks the point place organ...
Furthermore, we define a stress concentration factor for a generic notched component subjected to uniform stress σ as Kt = σmax/σ, where σmax is the maximum stress at the notch root. For an elliptical notch in an infinite plate we have (Inglis, 1913) (23)Kt=1+2aϱ with ϱ =...
Exact closed-form stress intensity factor (SIF) solutions have been developed for mode-I, II and III through-thickness cracks in an infinite plate. Centre-... ML Tan,ME Fitzpatrick,L Edwards - 《Engineering Fracture Mechanics》 被引量: 73发表: 2007年 Stress Intensity Factor Analysis of Interf...
The crack stress concentration factor and a strain concentration rule are used to calculate the notch root strain and to shift the origin of a modified HRR field, resulting in a non-singular model of the strain distribution ahead of the crack tip. In this way, the damage caused by each ...
The value of the stress singularity exponent depends on the V-notch opening angle. The finite element method was used for a determination of stress distribution in the vicinity of the sharp V-notch tip and for the estimation of the generalized stress intensity factor dependin...
Effect of a Stringer on the Stress Concentration Due to a Crack in a Thin Sheet A coefficient is obtained for determining the effect of a reinforcing stringer on the stress concentration factor at the tip of a crack in a thin sheet. The results are given for the case on which the stringe...
Key words: Stress concentration, Equivalent Stiffness ratio, Fiber metal laminates, Stress intensity factor, Fatigue crack propagation, Finite element analysis PAGE PAGE VII VI VI 图、表清单图 2.1 GLARE 层板的断裂性能 10 图 2.2 GLARE2 和 GLARE3 从起始裂纹的疲劳断裂过程 11 图 2.3 GLARE 在飞机...
The original stress was in the direction 90 degrees to the crack - the crack has relieved the stress somewhat and may have changed the direction of the new stress. Fatigue may be a factor. In any case, a detailed analysis needs to be conducted since a crack is the first sign of impendi...