The Fatigue Behavior of Steel Structures under Random Loading

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

Fatigue damage accumulation in steel structures under random loading has been studied in a number of investigations at the Technical University of Denmark. The fatigue life of welded joints has been determined both experimentally and from a fracture mechanics analysis. In the experimental part of the investigation, fatigue test series with a total of 540 fatigue tests have been carried through on various types of welded plate test specimens and full-scale offshore tubular joints. The materials that have been used are either conventional structural steel or high-strength steel. The fatigue tests and the fracture mechanics analyses have been carried out using load histories, which are realistic in relation to the types of structures studied, i.e. primarily bridges, offshore structures and chimneys. In general, the test series carried through show a significant difference between constant amplitude and variable amplitude fatigue test results. Both the fracture mechanics analysis and the fatigue test results indicate that Miner’s rule, which is normally used in the design against fatigue in steel structures, may give results, which are unconservative, and that the validity of the results obtained from Miner’s rule will depend on the distribution of the load history in tension and compression.
Original languageEnglish
Title of host publicationIIW Doc. XIII-2277-09
Number of pages13
Place of PublicationSingapore
PublisherInternational Institute of Welding
Publication date2009
Pages3-15
Publication statusPublished - 2009
Event62nd Annual Assembly of the International Institute of Welding - Singapore, Singapore
Duration: 12 Jul 200917 Jul 2009

Conference

Conference62nd Annual Assembly of the International Institute of Welding
CountrySingapore
CitySingapore
Period12/07/200917/07/2009

Cite this

Agerskov, H. (2009). The Fatigue Behavior of Steel Structures under Random Loading. In IIW Doc. XIII-2277-09 (pp. 3-15). Singapore: International Institute of Welding.
Agerskov, Henning. / The Fatigue Behavior of Steel Structures under Random Loading. IIW Doc. XIII-2277-09. Singapore : International Institute of Welding, 2009. pp. 3-15
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publisher = "International Institute of Welding",

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Agerskov, H 2009, The Fatigue Behavior of Steel Structures under Random Loading. in IIW Doc. XIII-2277-09. International Institute of Welding, Singapore, pp. 3-15, 62nd Annual Assembly of the International Institute of Welding, Singapore, Singapore, 12/07/2009.

The Fatigue Behavior of Steel Structures under Random Loading. / Agerskov, Henning.

IIW Doc. XIII-2277-09. Singapore : International Institute of Welding, 2009. p. 3-15.

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

TY - GEN

T1 - The Fatigue Behavior of Steel Structures under Random Loading

AU - Agerskov, Henning

PY - 2009

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N2 - Fatigue damage accumulation in steel structures under random loading has been studied in a number of investigations at the Technical University of Denmark. The fatigue life of welded joints has been determined both experimentally and from a fracture mechanics analysis. In the experimental part of the investigation, fatigue test series with a total of 540 fatigue tests have been carried through on various types of welded plate test specimens and full-scale offshore tubular joints. The materials that have been used are either conventional structural steel or high-strength steel. The fatigue tests and the fracture mechanics analyses have been carried out using load histories, which are realistic in relation to the types of structures studied, i.e. primarily bridges, offshore structures and chimneys. In general, the test series carried through show a significant difference between constant amplitude and variable amplitude fatigue test results. Both the fracture mechanics analysis and the fatigue test results indicate that Miner’s rule, which is normally used in the design against fatigue in steel structures, may give results, which are unconservative, and that the validity of the results obtained from Miner’s rule will depend on the distribution of the load history in tension and compression.

AB - Fatigue damage accumulation in steel structures under random loading has been studied in a number of investigations at the Technical University of Denmark. The fatigue life of welded joints has been determined both experimentally and from a fracture mechanics analysis. In the experimental part of the investigation, fatigue test series with a total of 540 fatigue tests have been carried through on various types of welded plate test specimens and full-scale offshore tubular joints. The materials that have been used are either conventional structural steel or high-strength steel. The fatigue tests and the fracture mechanics analyses have been carried out using load histories, which are realistic in relation to the types of structures studied, i.e. primarily bridges, offshore structures and chimneys. In general, the test series carried through show a significant difference between constant amplitude and variable amplitude fatigue test results. Both the fracture mechanics analysis and the fatigue test results indicate that Miner’s rule, which is normally used in the design against fatigue in steel structures, may give results, which are unconservative, and that the validity of the results obtained from Miner’s rule will depend on the distribution of the load history in tension and compression.

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Agerskov H. The Fatigue Behavior of Steel Structures under Random Loading. In IIW Doc. XIII-2277-09. Singapore: International Institute of Welding. 2009. p. 3-15