کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
767466 1463146 2012 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cohesive crack modelling of thin sheet material exhibiting anisotropy, plasticity and large-scale damage evolution
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Cohesive crack modelling of thin sheet material exhibiting anisotropy, plasticity and large-scale damage evolution
چکیده انگلیسی

The crack tip region in notched structures generally exhibit damage evolution before ultimate failure occurs. In some materials, the damaged regions may reach considerable sizes prior to structural collapse. In this work, a cohesive crack model suitable for static fracture mechanics analysis of thin sheet materials exhibiting anisotropy, plasticity, and large-scale damage evolution was developed. The material parameters of the model were calibrated solely by tensile testing of unnotched test specimens. The predictive capability of the model was verified by comparisons with experiments on notched test specimens with different crack sizes. The predictions of failure were shown to be in excellent agreement with the experiments.


► A cohesive crack model for fracture mechanics analysis of thin sheets was developed.
► The model comprised anisotropy, plasticity, and large-scale damage evolution.
► The model was calibrated solely by tensile testing of unnotched test specimens.
► The model was verified by comparisons with experiments on notched test specimens.
► The predictions of failure were in excellent agreement with the experiments.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Fracture Mechanics - Volume 79, January 2012, Pages 50–60
نویسندگان
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