Finite Element Fatigue Analysis of Unsupported Crane

Buczkowski, Ryszard; Żyliński, Bartłomiej

doi:10.2478/pomr-2021-0012

Cited by 9 publications

(4 citation statements)

References 17 publications

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“…When actually calculating the fatigue life of components, the combination of several methods is often used for fatigue analysis and performance evaluation. Aiming at fatigue damage of welded structure of lifting machinery, scholars at home and abroad have conducted a lot of research [7][8][9], in order to find a method that can effectively and accurately evaluate the fatigue life of welded structure.…”

Section: Introductionmentioning

confidence: 99%

Study on fatigue life estimation method of welded structure of lifting machinery

Liu,

Jiang,

Shao

et al. 2024

J. Phys.: Conf. Ser.

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The fatigue strength of lifting machinery structure has always been an important issue in ensuring safety. In order to effectively and accurately evaluate the fatigue life of lifting machinery structure, this paper based on Miner linear cumulative damage theory and S-N curve in British BS 7608 standard, the fatigue life calculation of metal welded structure is carried out. Taking the large-scale bridge crane of hydropower station as an example, the nominal stress of the corresponding key parts is obtained by applying the actual load in the finite element model, and the stress time history is calculated, and then the safe service life of the structure is estimated, which provides an effective and feasible method for evaluating the fatigue residual life of the crane. The example analysis shows that the calculation method is convenient and reliable, which provides a scientific basis for accurately estimating the fatigue life of welded structure of lifting machinery.

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Section: Introductionmentioning

confidence: 99%

Study on fatigue life estimation method of welded structure of lifting machinery

Liu,

Jiang,

Shao

et al. 2024

J. Phys.: Conf. Ser.

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“…However, most control methods have been proposed mainly for overhead or container cranes (Jaafar et al 2019), and the number of control methods for tower cranes is much smaller than for overhead cranes. The strength and wear of the crane and its parts: body, jib, and boom, can be assessed by numerical analysis (Buczkowski & Żyliński, 2021).…”

Section: Introductionmentioning

confidence: 99%

Dynamic analysis of the joint movement of the hoisting and slewing mechanisms of a boom crane

Loveikin,

Romasevych,

Kadykalo

2023

Tehnìka ta energetika

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To increase the productivity of boom cranes, the operation of individual mechanisms is combined. At the same time, dynamic loads on structural elements, drive mechanisms and loads on a flexible suspension increase, which reduces the reliability of crane operation and increases energy losses. Therefore, the research aims to consider the problem of the dynamics of the joint movement of the mechanisms for load slewing and hoisting of a boom crane. To study the dynamics of the joint movement of the mechanisms, the boom system was represented by a mechanical system with 6DOF, where the basic movement of the mechanisms and the oscillatory movement of the structural links with elastic and dissipative properties, as well as the load on a flexible suspension in the plane of crane slewing and hoisting were considered. For such a mechanical system of a crane, the differential equations of the joint motion of the crane slewing and hoisting mechanisms were developed. The obtained equations are a system of the second order nonlinear differential equations, for solving which a numerical method in the form of a computer program was used. Using the developed program, the dynamics of the joint movement of the mechanisms of a jib crane with specific numerical parameters were calculated. Based on the calculations, a dynamic analysis of the joint movement of the mechanisms for slewing and hoisting the load of a jib crane with a hoisting boom was carried out, which revealed high-frequency vibrations of links with elastic and dissipative properties, as well as low-frequency oscillations of the load on a flexible suspension. The greatest impact of oscillations is observed during the start-up of mechanisms, where high-frequency oscillations dampen during the transient process, and low-frequency oscillations dampen over a fairly significant period. To improve the dynamic properties of the mechanisms for turning and hoisting a load during their joint movement, it is proposed to optimise the mode of movement in the areas of transient processes (start-up, braking). The research results can be used in the development and operation of cranes in mechanical engineering, construction, and other industries

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“…Marquez et al [4] provide a great wealth of knowledge compiled into a literature review consisting of common causes for failure of cranes, as well as their root-cause-analysis reports. This paper was used in the development of the mental framework, in guiding design decisions and developing the analysis plan in accordance with the common failure causes discovered.…”

Section: Introductionmentioning

confidence: 99%

Novel Procedures for Sustainable Design in Structural Rehabilitation on Oversized Metal Structures

Mocanu

Rece

Burlacu

et al. 2022

Metals

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This article includes several studies and advanced research carried out on the subject of large KANGUR-type port cranes, subjected to regular or interventional maintenance work; besides the beneficial effects for which they were intended, some undesirable effects were detected in terms of affecting safety in exploitation. The purpose of this paper is to identify the risk factors and to offer sustainable solutions for increasing operational safety and service life for the respective equipment, as well as for other similar fields of activity, including oversized structures. Following the theoretical studies and the experimental research carried out in situ that confirmed the validity of the theoretical models used, the article in conclusion provides specific and sustainable solutions as well as new methods of assessment, which combine the positive elements of the usual solutions, but in parallel, allow the elimination of the negative side effects that may occur in time. Hence, the article’s novelties also consist of a new approach to achieve structural interventions, resulting in the increase in the service life, and in parallel with that, the safety in operation of the respective equipment.

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Finite Element Fatigue Analysis of Unsupported Crane

Cited by 9 publications

References 17 publications

Study on fatigue life estimation method of welded structure of lifting machinery

Study on fatigue life estimation method of welded structure of lifting machinery

Dynamic analysis of the joint movement of the hoisting and slewing mechanisms of a boom crane

Novel Procedures for Sustainable Design in Structural Rehabilitation on Oversized Metal Structures

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