Fatigue Failure of a 2500-Ton Forge Press
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- 作者：Nicoli Ames ; Joseph Lemberg ; Robert Caligiuri
- 关键词：Catastrophic failure ; Failure analysis ; Fatigue failure ; Finite element analysis ; Fatigue analysis ; Steel
- 刊名：Journal of Failure Analysis and Prevention
- 出版年：2017
- 出版时间：February 2017
- 年：2017
- 卷：17
- 期：1
- 页码：15-22
- 全文大小：3019KB
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Tribology, Corrosion and Coatings; Characterization and Evaluation of Materials; Classical Mechanics; Structural Mechanics; Quality Control, Reliability, Safety and Risk;
- 出版者：Springer US
- ISSN：1864-1245
- 卷排序：17
文摘
Large industrial equipment can fail spectacularly, and analyzing the failure can prove difficult, as catastrophic failures can provide red herrings that confound the failure analysis. One such case involved the fatigue failure of a 2500-ton forge press. During operation, two tie rods failed, leading to catastrophic failure of the press. During post-mortem analysis, several fatigue cracks were found in the upper platen of the forge press and misalignment of some of the tie rod nuts was observed. Finite element modeling revealed that the presence of the platen fatigue cracks and the misaligned nuts had little effect on the fatigue behavior of the press. Instead, the high strength of the two failed tie rods led to higher-than-intended service stresses in these tie rods and resulted in a reduced fatigue life.