Analysis of the drive shaft fracture of the bucket wheel excavator

Savković, Mile; Gašić, Milomir; Petrović, Dragan; Zdravković, Nebojša; Pljakić, Radmila

doi:10.1016/j.engfailanal.2011.11.004

Cited by 40 publications

(12 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It weights up to hundreds of tons, length up to tens of meters. Due to the poor working conditions there exist a number of complex excitations, and it is easy to cause the low-frequency vibration of the bucked wheel boom, which induces fatigue cracks and even causes serious accidents such as collapse of the whole machine [1][2][3][4][5][6]. It is for this reason that bucked wheel excavator requires serving regularly, and abnormal vibration diagnosis and repairments are often performed on the bearing structures [7,8], which has brought huge losses to the plants.…”

Section: Introductionmentioning

confidence: 99%

Low‐Frequency Vibration Testing of Huge Bucket Wheel Excavator Based on Step‐Decay Signals

Jiang

Liu

et al. 2018

Shock and Vibration

View full text Add to dashboard Cite

The low-frequency vibration of the bucket wheel excavator has an important impact on the fatigue life of the structures. For conventional vibration testing methods, it is difficult and expensive to excite the overall low-frequency vibration of the whole machine. Hence, in this paper, the excitation method that uses the belt-supporting rollers on the boom as an exciter is tried to excite the low-frequency vibration, so that the low natural frequencies can be identified by Fourier transforming the free decay signals caused by the sudden power off. By this method, the first five natural frequencies are obtained, and the results are verified through corresponding computational numerical model of the bucket wheel excavator. It can be concluded that the proposed testing method can achieve the same accuracy but is much more convenient and costs less than existing methods.

show abstract

Section: Introductionmentioning

confidence: 99%

Low‐Frequency Vibration Testing of Huge Bucket Wheel Excavator Based on Step‐Decay Signals

Jiang

Liu

et al. 2018

Shock and Vibration

View full text Add to dashboard Cite

show abstract

“…xo, estando presente na maioria das aplicações de componentes mecânicos e é responsável por grande parte das falhas estruturais que ocorrem em componentes mecânicos (SAVKOVIĆ et al, 2012).…”

Section: O Fenômeno Da Fadiga é Altamente Comple-unclassified

Análise de falha por fadiga em eixo de transmissão utilizando o método dos elementos finitos

Silva

Chaves

Guidi

2016

Exacta

View full text Add to dashboard Cite

Neste trabalho, objetivou-se apresentar uma aplicação do método dos elementos finitos para análise de tensão e fadiga em um eixo de transmissão mecânica. Eixos de transmissão são largamente usados em máquinas rotativas, e sujeitos a problemas de fadiga. O eixo de transmissão rotativo estudado é sustentado em mancais, carregado por uma força alternada de 6,8 kN, em que o eixo tem todos os raios de arredondamento de 0,003 m, uma superfície retificada, aço AISI 1050, com módulo de elasticidade de Young igual a 206,8 GPa e módulo de Poisson igual a 0,28. Apresentam-se as condições de ruptura por tensão e também por fadiga, observadas após tensão máxima em condições de trabalho, e o coeficiente de segurança na fadiga para um tempo de vida do eixo de transmissão de 350 mil ciclos. Os resultados numéricos foram comparados com os de fadiga obtidos empiricamente e apresentaram-se satisfatórios.

show abstract

“…Structural failures [4,17] in certain cases may lead to catastrophic consequences -machines collapses, as described in [3,18]. Failures of mechanisms [5,11,16,19,[24][25][26] do not bring drastic disruption of structural integrity, but they also cause significant direct costs, as well as indirect costs due to the downtime that substantially diminishes the effects of BWE exploitation [5,6]. Although the current engineering codes and national standards used in calculations ignore the dynamic character of BWE external loads, the investigations of BWE dynamics are extremely important [6].…”

Section: Introductionmentioning

confidence: 99%

The influence of constructive parameters on response of bucket wheel excavator superstructure in the out-of-resonance region

Bošnjak

Oguamanam

Zrnić

2015

Archives of Civil and Mechanical Engineering

View full text Add to dashboard Cite

Analysis of the drive shaft fracture of the bucket wheel excavator

Cited by 40 publications

References 12 publications

Low‐Frequency Vibration Testing of Huge Bucket Wheel Excavator Based on Step‐Decay Signals

Low‐Frequency Vibration Testing of Huge Bucket Wheel Excavator Based on Step‐Decay Signals

Análise de falha por fadiga em eixo de transmissão utilizando o método dos elementos finitos

The influence of constructive parameters on response of bucket wheel excavator superstructure in the out-of-resonance region

Contact Info

Product

Resources

About