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Acta Mechanica Sinica

, Volume 3, Issue 1, pp 73–81 | Cite as

Dual-parameter elastic-plastic fracture criterion of metals and alloys in the plane strain case

  • Zhuang Tao
Article

Abstract

In recent years, some investigators discussed the applicability of the HRR theory for engineering materials based on the results of numerical analyses and experimental studies. In the present paper, the finite element method is employed to analyze the crack tip fields of the engineering elastic-plastic material with a variety of geometry configurations of cracked specimens from elastic state to intensely general yielded state in the plane strain case. The results indicate that the HRR theory loses its validity of application for engineering elastic-plastic materials in the plane strain case. The reasons for this are analyzed. A dual-parameter fracture criterion is suggested for this case.

Key words

HRR theory crack tip field elastic-plastic materials plane strain case dual-parameter fracture criterion 

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Copyright information

© Chinese Society of Theoretical and Applied Mechanics 1987

Authors and Affiliations

  • Zhuang Tao

There are no affiliations available

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