Elastic-Plastic Dynamic Line-Spring Model for the Simplified Analysis of the Impact Response of a 3-D Surface Crack

Hiroyuki Abé, Masumi Saka, Manabu Utagawa

Research output: Contribution to journalArticlepeer-review

Abstract

An elastic-plastic dynamic line-spring model is proposed for the simplified analysis of impact response of a part-through surface crack in an elastic perfectly plastic plate. Bending of the plate is treated based on Mindlin’s theory. Stiffness of the dynamic line-spring is evaluated by considering the growth of the plastic zone in the remaining regament and the unloading. The crack tip opening displacement, CTOD, for a semielliptical surface crack in a plate subjected to impact loading at its ends is calculated by using the present model. It is found that CTOD takes its maximum value at the deepest penetration point of the surface crack and the maximum value is larger than that in the static case.

Original languageEnglish
Pages (from-to)1099-1106
Number of pages8
JournalTransactions of the Japan Society of Mechanical Engineers Series A
Volume56
Issue number525
DOIs
Publication statusPublished - 1990

Keywords

  • Crack Tip Opening Displacement
  • Elastic-plastic Dynamic Line-spring
  • Fracture Mechanics
  • Plastic Zone
  • Unloading

ASJC Scopus subject areas

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

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