Prediction of Material Failure Time for a Bucket Wheel Excavator Boom Using Computer Simulation

Materials

Sorin Mihai Radu¹  Eva Biro Korozsi¹  Ildiko Brînaș¹  Andrei Andraș¹  Florin Dumitru Popescu¹  Daniela Ioana Budilică¹ 

[1] Department of Mechanical, Industrial and Transport Engineering, University of Petroșani, 332009 Petrosani, Romania;

关键词: fatigue;    damage;    bucket wheel excavator;    boom;    time response;    strain;   

DOI  :  10.3390/ma14247897

来源: DOAJ

【 摘 要 】

Breakdown of stackers and excavators in opencast mines is possible because of operating, manufacturing and structural causes, and it produces high financial losses. These can be prevented by using various measures, including analyses and strength tests, with computerized modeling and simulation using FEA or other techniques being implemented in the recent years. In this paper a fatigue study is conducted on the boom of a BWE. Based on a computer model of the boom previously developed in SOLIDWORKS by our author team, first the modal analysis is conducted for three positions of the boom by studying the frequency response during the excavation process. This is followed by the time response determination corresponding to the maximum displacement frequency, in order to assess the stress during the excavation process, which causes the material fatigue in the boom structure. It was found that the maximum displacements appear when the BWE boom operates in a horizontal position. The aim was to estimate the period of time to failure in order to prevent unwanted accidents, and to develop a method that is applicable to any surface mining or industrial machine with similar structure.

【 授权许可】

Unknown