کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
770861 897577 2010 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Extension of the Tanaka–Mura model for fatigue crack initiation in thermally cut martensitic steels
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Extension of the Tanaka–Mura model for fatigue crack initiation in thermally cut martensitic steels
چکیده انگلیسی

A multi scale numerical approach for evaluation of crack initiation and propagation in thermally cut structural elements made of martensitic steel is presented. A numerical simulation of micro-crack initiation is based on the Tanaka–Mura micro-crack nucleation model, where individual grains of synthetic microstructure are simulated using the Voronoi tessellation. Three improvements are added to this model (multiple slip bands, micro-crack coalescence and segmented micro-crack generation). Crack propagation is then solved on a macro scale model using linear elastic fracture mechanics approach. Some experimental tests have also been performed to check the accuracy of the numerical model. The results of the proposed computational model show a reasonable correlation with the experimental results.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Fracture Mechanics - Volume 77, Issue 11, July 2010, Pages 2040–2050
نویسندگان
, , , ,