Fatigue characteristics of vulcanized natural rubber for antivibration (2nd report, A study on the fatigue life prediction under uniaxial variable loading)

Shunsaku Shibata, Hideki Ohshima, Yuuta Aono, Hiroshi Noguchi

研究成果: Contribution to journalArticle査読

抄録

In order to investigate fatigue characteristics of vulcanized natural rubber (NR), fatigue tests are carried out under various stress ratios R and variable loading. In this paper, fatigue crack propagation life is predicted depending on fatigue crack propagation behavior, because the fatigue life is almost the fatigue crack propagation life. Two essential assumptions for the application of Miner's rule are satisfied. It is considered that Miner's rule can predict the fatigue life safely under two-step loading, because the fatigue damage location is depending on R. Under complex variable loading, it is considered that the crack growth rate under 0<R< 1 condition is accelerated because of disappearance of crystallization effect. So, it is necessary to make up the modified constant life diagram. The fatigue crack propagation life can be predicted using the modified constant life diagram and Miner's rule.

本文言語英語
ページ(範囲)558-565
ページ数8
ジャーナルNihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
74
4
DOI
出版ステータス出版済み - 4 2008

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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