کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
770337 1463069 2016 19 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Proposal for a new CTOD calculation formula
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Proposal for a new CTOD calculation formula
چکیده انگلیسی


• CTOD calculation from P–Vg curve was discussed using FE-analysis results.
• The rotational factor, rp was newly calibrated and examined for the experiments.
• A new CTOD calculation formula, considering yield-to-tensile ratio is proposed.
• Prediction of numerical CTOD by the proposed CTOD was examined in wide range of YR.
• The proposed CTOD calculation was also examined by the experiment results.

A new CTOD calculation method is investigated in this work, considering the variation of crack tip blunting due to strain hardening. The calculation formula is constructed assuming that CTOD45FEM based on three-dimensional elasto-plastic FEM is the target CTOD to be calibrated. A new factor f is introduced to correct the plastic term. In this factor, the blunted crack tip shape is considered to depend on the strain hardening exponent, and f is given as a function of the yield-to-tensile ratio (YR) of the material and the specimen thickness. The appropriateness of the investigated CTOD calculation is verified numerically and experimentally.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Fracture Mechanics - Volume 159, July 2016, Pages 16–34
نویسندگان
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