Analysis of a Crane Runway Failure

Vašková, Veronika; Fojtík, Roman; Pustka, David

doi:10.1016/j.proeng.2017.05.335

Cited by 3 publications

(5 citation statements)

References 7 publications

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“…Their conclusion is based on an experimental study of 1/2 scale welded I‐sections. Other fatigue studies of crane runway girders based on the endurance approach have been performed by Kossakowski et al, 16 Citarelli and Feldmann, 17 and Vašková et al 18 …”

Section: Numerical Fatigue Assessment Of Crane Runway Girdersmentioning

confidence: 99%

“…Their conclusion is based on an experimental study of 1/2 scale welded I-sections. Other fatigue studies of crane runway girders based on the endurance approach have been performed by Kossakowski et al, 16 Citarelli and Feldmann, 17 and Vaškov a et al 18 The overarching conclusion that can be drawn from these studies is that fatigue life of nonstandardized welded joints, which are often unavoidable in the design of the crane runway girders, cannot be reliably determined based on the nominal stress method as currently described by most standards. Because the method does not explicitly account for local stress raisers such as welds.…”

Section: Numerical Fatigue Assessment Of Crane Runway Girdersmentioning

confidence: 99%

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Fracture mechanics and hot spot stress‐based fatigue life calculation: Case study for a crane runway girder

Hectors

Chaudhuri

Waele

2022

Fatigue Fract Eng Mat Struct

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This work presents the case study of a welded overhead crane runway girder. A full-shell global finite element model was developed and validated using strain measurements. The global model drives solid submodels of different scales. Using load spectra based on real operational data, hot spot stress and XFEM-based fracture mechanics simulations are performed to assess the fatigue properties of two critical joints. For the fracture mechanics-based approach, it is shown that small cracks quickly converge to the same aspect ratio. Hence, the choice of the initial crack aspect ratio was found to be inconsequential. But the aspect ratio must not be assumed to be constant during the fatigue crack growth simulations. Finally, it is shown that the size at which a crack is transferred from one submodel to a subsequent is critical for the accuracy of the fatigue crack growth simulations.

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Section: Numerical Fatigue Assessment Of Crane Runway Girdersmentioning

confidence: 99%

Section: Numerical Fatigue Assessment Of Crane Runway Girdersmentioning

confidence: 99%

Fracture mechanics and hot spot stress‐based fatigue life calculation: Case study for a crane runway girder

Hectors

Chaudhuri

Waele

2022

Fatigue Fract Eng Mat Struct

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“…The irradiation will result in a series of subsequent damage event and physical changes in materials’ microstructure, including swelling, growth, phase change, and segregation 22 . Generally, long‐term exposure to irradiation will speed up the crane rail beam creep and lead to structural failures such as bolt failure 23 . It can also reduce the positioning accuracy of the crane, give rise to wear failures between wheels and rails, and eventually lead to serious problems such as excessive running noise, and unexpected functions of the items that relies on the crane to conduct moving actions.…”

Section: Introductionmentioning

confidence: 99%

“…22 Generally, long-term exposure to irradiation will speed up the crane rail beam creep and lead to structural failures such as bolt failure. 23 It can also reduce the positioning accuracy of the crane, give rise to wear failures between wheels and rails, and eventually lead to serious problems such as excessive running noise, and unexpected functions of the items that relies on the crane to conduct moving actions. Therefore, under such above-mentioned circumstances, analysis and evaluation of reliability of the crane rail beam necessitate considering the effect of irradiation creep, which refers to deformation phenomenon activated by neutron flux.…”

Section: Introductionmentioning

confidence: 99%

Monte‐Carlo simulation‐based analysis for structural reliability of the crane rail beam under stochastic crane movements and irradiation conditions

Qian

Ren

et al. 2023

Quality & Reliability Eng

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This study presents a Monte-Carlo simulation-based approach to investigate how stochastic crane movements affect the structural reliability of the rail beam considering radiation effects. In the simulation, the rail beam loaded under a stochastically moving crane is discretized into 47 equispaced structural points for calculating its strain profile. Then the structural reliability at each structural point is calculated with the consideration of irradiation creep, represented as an accumulated strain over a given period of time. And the rail beam reliability is determined by the minimum value from the reliabilities calculated at different structural points, according to the weakest link principle. In our simulations, three candidate distributions, including the normal distribution, uniform distribution, and 3-parameter lognormal distributions respectively, are applied to describe the stochastic distances of the crane. It can be seen from the simulation results that the rail beam reliability degrades with the most rapid rate when the crane distances follow a normal distribution, compared to the other two distributions. This paper offers a possible way of using the proposed Monte-Carlo simulation-based method to carry out reliability analysis and improvements for the rail beam working in extreme environments, such as irradiation conditions, with random operational tasks.

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“…Through the measurement of track geometric deviations and the determination of skew motion caused by eccentric load, the failure problem of 200t casting crane caused by the rail wear is discussed in (Kulka J et al, 2016). Veronika (Vašková V et al 2017) analyses the crane operation failure attributed to the deformation of the track caused by the insufficient rigidity of crane track girder. Rettenmeier (Rettenmeier P, et al, 2016) puts forward the fatigue residual life evaluation method of crane rail girder under multi-axial stress state for combining wheel load with and welding residual stress.…”

Section: Introductionmentioning

confidence: 99%

Fatigue residual life prediction of casting crane under track defect model

Dong

Xin

2018

JAMDSM

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For the safety problems caused by abnormal changes of stress-time history at fatigue risk points of casting crane metal structure due to the vertical impact effect of track defects, the forecast method of fatigue residual life of casting crane under track defect model is proposed. Guided by the kinematics and dynamics theory, the kinematic-dynamic model of dynamic load resulted from crane travelling on defective track including the highlow dislocation and horizontal gap is established. The influence of track defects on the vertical impact effect of operation crane is analyzed. Furthermore, combining with the collection of technological process and usage of casting crane, the characteristic parameters needed in the process of stress spectrum acquisition are determined. The allowable stress method combined with finite element simulation is used to get the fatigue risk cross-sections and points of crane metal structure and the first principal stress-time histories of dangerous points are obtained. The double parameter stress spectrum of dangerous points is extracted by rain flow technology. Based on fracture mechanics and damage tolerance design, the fatigue residual life of dangerous points is estimated by Paris formula. Taking the 100/40t-28.5m casting crane as an example, the feasibility of the above model and method is verified.

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Analysis of a Crane Runway Failure

Cited by 3 publications

References 7 publications

Fracture mechanics and hot spot stress‐based fatigue life calculation: Case study for a crane runway girder

Fracture mechanics and hot spot stress‐based fatigue life calculation: Case study for a crane runway girder

Monte‐Carlo simulation‐based analysis for structural reliability of the crane rail beam under stochastic crane movements and irradiation conditions

Fatigue residual life prediction of casting crane under track defect model

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