Stress intensity factor solutions for cracks in railway axles

Madia, Mauro; Beretta, S.; Schödel, Manfred; Zerbst, Uwe; Luke, Michael; Varfolomeev, Igor

doi:10.1016/j.engfracmech.2010.03.019

Cited by 36 publications

(29 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The equations correlating these forces with the input loading components Q 1 , Q 2 , Y 1 , Y 2 and σ b ( Figure 5) are provided in [17]. Besides mode I they also include mode II and mode III solutions.…”

Section: Fracture Mechanics Analysesmentioning

confidence: 99%

“…The numerically derived K factor solutions were then used analytically in the subsequent analyses. All K factor solutions used by the authors for railway axles are recorded in the K factor compendium within this issue [17]. the press fit beneath the wheel and a crack at the T transition.…”

Section: Fracture Mechanics Analysesmentioning

confidence: 99%

“…The question to be answered in this section is how big the error in residual lifetime will be when the analysis is based on plane instead of rotating bending. For this, K factor solutions were derived for both loading geometries (see [17]). The principle is illustrated in Figure 15.…”

Section: Plane Vs Rotating Bendingmentioning

confidence: 99%

See 2 more Smart Citations

Parameters affecting the damage tolerance behaviour of railway axles

Zerbst¹,

Schödel

Beier

2011

Engineering Fracture Mechanics

Self Cite

View full text Add to dashboard Cite

The paper provides a discussion on damage tolerance options applied to railway axles and factors influencing the residual lifetime as well as the required inspection interval. These comprise material properties such as the scatter of the da/dN-ΔK curve, the fatigue crack propagation threshold ΔK th and the toughness of the material. Parameters affecting axle loading such as the press fit, rotating bending, load history and mixed crack opening modes are discussed. Finally the influence of the initial crack geometry on residual lifetime is simulated.

show abstract

Section: Fracture Mechanics Analysesmentioning

confidence: 99%

Section: Fracture Mechanics Analysesmentioning

confidence: 99%

See 1 more Smart Citation

Parameters affecting the damage tolerance behaviour of railway axles

Zerbst¹,

Schödel

Beier

2011

Engineering Fracture Mechanics

Self Cite

View full text Add to dashboard Cite

show abstract

“…Hence, both J-integral and displacement extrapolation methods cannot produce accurate SIFs exactly at the crack ends of a surface crack. The singularity at the crack ends of a surface crack is still being investigated by researchers (Madia et al [2], Hutař and Náhlík [3], Heyder et al [4]). Therefore, this study focus only on the calculation of SIFs at the crack tips farther away from the crack ends.…”

Section: Introductionmentioning

confidence: 99%

“…It has a significant impact on the accuracy of the SIFs. For crack tips further away from the crack ends where the crack front intersects with the weld toe, SIFs can be determined accurately using J-integral and displacement extrapolation methods under the square root singularity assumption (Shivakumar and Raju [1], Madia et al [2]). However, this is not the case for SIFs at the crack ends due to boundary layer effect.…”

Section: Introductionmentioning

confidence: 99%

Stress Intensity Factors of Tubular T/Y-Joints Subjected to Three Basic Loading

Lie¹,

Li²,

Shao³

2016

Volume 12 Number 2

View full text Add to dashboard Cite

This paper describes the determination of stress intensity factors (SIFs) of a 3D surface crack in a circular hollow section (CHS) T/Y-joint subjected to three basic loading. In order to achieve the main objective, an automatic finite element (FE) mesh generator is designed whereby the mesh density and element type of the Crack Tube zone can be controlled by the users. Extensive tests are carried out to check the accuracy and to test the convergence of the mesh models. It is found that the generated mesh models are both accurate and robust. Subsequently, a total of 246 cracked CHS T/Y-joints subjected to axial loading; in-plane bending and out-of-plane bending are analysed, and the influencing parameters β, γ, τ, θ, a/t0 and c/a on the SIFs of a 3D surface crack are investigated in this study. The SIFs at the deepest point of a 3D surface crack are also determined using an indirect method incorporated in BS7910. It is found that the later underestimates the SIFs by as much as -36.9% under axial load for crack located at the crown and -32.9% under out-of-plane bending for crack located at the saddle, respectively. Hence, the indirect method is found to be unsafe in estimating the SIFs of a 3D surface crack in CHS T/Y-joints under certain loading conditions and crack location.

show abstract

Consideration of Fatigue Crack Growth Aspects in the Design and Assessment of Railway Axles

Varfolomeev

Luke

2015

Recent Trends in Fracture and Damage Mechanics

View full text Add to dashboard Cite

Stress intensity factor solutions for cracks in railway axles

Cited by 36 publications

References 11 publications

Parameters affecting the damage tolerance behaviour of railway axles

Parameters affecting the damage tolerance behaviour of railway axles

Stress Intensity Factors of Tubular T/Y-Joints Subjected to Three Basic Loading

Consideration of Fatigue Crack Growth Aspects in the Design and Assessment of Railway Axles

Contact Info

Product

Resources

About