منابع مشابه
/-Integral Estimates for Strain-Hardening Materials in Ductile Fracture Problems
A finite-element procedure is developed to analyze plane ductile fracture problems in the presence of largescale yielding near the crack tip. Strain and stress singularities near the crack tip, corresponding to the strainhardening material model, are embedded in elements near the crack tip. The developed elastic-plastic incremental finite-element method is based on a hybrid displacement model. ...
متن کاملEvaluation of Varying Ductile Fracture Criteria for 42CrMo Steel by Compressions at Different Temperatures and Strain Rates
Fracturing by ductile damage occurs quite naturally in metal forming processes, and ductile fracture of strain-softening alloy, here 42CrMo steel, cannot be evaluated through simple procedures such as tension testing. Under these circumstances, it is very significant and economical to find a way to evaluate the ductile fracture criteria (DFC) and identify the relationships between damage evolut...
متن کاملYield Criteria for Ductile Materials and Fracture Mechanics of Brittle Materials
Brittle materials are materials that display Hookean behavior (linear relationship between stress and strain) and which fail at a discrete strain. Plastic materials display a variety of yielding behaviors associated with changes in the internal structure of the material at a fixed level of strain and at a fixed rate of strain. The time dependence to yielding behavior is due to the structural ch...
متن کاملNumerical modelling of ductile fracture in blanking
• A submitted manuscript is the author's version of the article upon submission and before peer-review. There can be important differences between the submitted version and the official published version of record. People interested in the research are advised to contact the author for the final version of the publication, or visit the DOI to the publisher's website. • The final author version ...
متن کاملEffect of temperature on the high strain-rate fracture characteristics of ductile metals
Induction heating has been employed to rapidly raise the temperature of ferrous specimens prior to testing at strain-rates > 10 s". The results show a general tendency for the ductility of a specially-processed pure iron to decrease with temperature over the range tested (20400 C). Based on the experimental data and the results of numerical simulations of the experiment, an empirical fracture m...
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ژورنال
عنوان ژورنال: Bulletin of JSME
سال: 1972
ISSN: 0021-3764,1881-1426
DOI: 10.1299/jsme1958.15.1507