کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1562329 999585 2011 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fatigue modeling of materials with complex microstructures
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مکانیک محاسباتی
پیش نمایش صفحه اول مقاله
Fatigue modeling of materials with complex microstructures
چکیده انگلیسی

A new approach and method of the analysis of microstructure-lifetime relationships of materials with complex structures is presented. The micromechanical multiscale computational analysis of damage evolution in materials with complex hierarchical microstructures is combined with the phenomenological model of fatigue damage growth. As a result, the fatigue lifetime of materials with complex structures can be determined as a function of the parameters of their structures. As an example, the fatigue lifetimes of wood modeled as a cellular material with multilayered, fiber reinforced walls were determined for different parameters of wood microstructures. In so doing, 3D hierarchical finite element models of softwood, and a computational technique, including the repeating restart and model change procedures, have been employed to model the fatigue response of latewood.

Research highlightsA program to generate automatically multilayered latewood with a notch is presented. Two programs are developed to transform the Abaqus inp files and control the repeated run. An approach based on Palmer–Miner rule is proposed to estimate the fatigue life.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computational Materials Science - Volume 50, Issue 5, March 2011, Pages 1644–1650
نویسندگان
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