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Unified CDM model and local criterion for ductile fracture—I. Unified CDM model for ductile fracture

✍ Scribed by Tie-Jun Wang

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
448 KB
Volume
42
Category
Article
ISSN
0013-7944

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✦ Synopsis

A general continuum damage mechanics (CDM) model for ductile fracture is proposed in the framework of CDM which can be reduced to linear and/or nonlinear models and can unify many known models by introducing appropriate values for the damage coeflicients of materials. Comparisons of the modelling and experimental results are presented and good agreements are found.

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A model is proposed for prediction of fracture initiation from surface flaws, bands of slag inclusions and zones with low yield strength in thin-walled structures. The mod del applies to cases where the whole ligament or defect zone is plasticized. Application of the model to, esign cases requires i