Service stresses and implications for fatigue strength in dragline tubular structures

F. R. Mashiri, X. L. Zhao, D. Pang, P. Dayawansa, H. Jiao, J. Price

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

1 Citation (Scopus)

Abstract

Draglines are the powerhouses of open cut mining in the coal industry in Australia. They have the capability of moving more than 100 tonnes of overburden in a cycle. Following site measurements of stress in one of the clusters where cracking is prevalent under service, this paper looks at the applicability of predicting fatigue life in draglines clusters using cumulative damage analysis. The design curves used in the analysis are in the hot stress method. Variable stress as well as equivalent stress range is used in estimating the fatigue life of the cluster. In the main chord of the cluster, where the cycle is largely compressive it is found that predicting fatigue life using a compressive stress reduction based on the British Standard BS7608 results in a prediction that is relatively closer to observed fatigue lives for new clusters. Using the full stress range on the other hand predicts fatigue lives in the main chord that are comparable to the fatigue life in repaired connections.

Original languageEnglish
Title of host publication5th International Conference on Advances in Steel Structures, ICASS 2007
Pages956-961
Number of pages6
Publication statusPublished - 2007
Externally publishedYes
Event5th International Conference on Advances in Steel Structures, ICASS 2007 - Singapore, Singapore
Duration: 5 Dec 20077 Dec 2007

Publication series

Name5th International Conference on Advances in Steel Structures, ICASS 2007
Volume3

Conference

Conference5th International Conference on Advances in Steel Structures, ICASS 2007
Country/TerritorySingapore
CitySingapore
Period5/12/077/12/07

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Metals and Alloys

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