کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
511161 865820 2007 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optimal design of machine components using notch correction and plasticity models
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
Optimal design of machine components using notch correction and plasticity models
چکیده انگلیسی

Shape optimization computational technology is used in order to maximize life time of notched machine/structural components in low cycle fatigue regime. The present approach is composed of three steps: (i) stress–strain calculation using notch correction and plasticity models, (ii) estimation of critical plane to asses fatigue lives, (iii) formulation of the optimization problem with constraint set on the number of cycles corresponding to crack initiation. The optimal design procedure is a combination of the computer aided geometrical design mathematical methods for the shape definition, the boundary element method used for analysis of the response quantities, assisted by the sequential linear programming method with move limits. Numerical examples display significant increase in the number of cycles corresponding to crack initiation phase in comparison to traditional (regular) notch shapes.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computers & Structures - Volume 85, Issues 17–18, September 2007, Pages 1382–1398
نویسندگان
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