کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4964007 1447416 2017 26 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An isogeometrical approach to structural level set topology optimization
ترجمه فارسی عنوان
یک رویکرد ایزوگومتریک به سطح ساختاری، بهینه سازی توپولوژی را تعیین می کند
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
چکیده انگلیسی
This paper aims to utilize the Isogeometric Analysis (IGA) for the level set structural topology optimization. The level set function is parametrized using the Non-Uniform Rational B-Spline (NURBS) basis functions in a higher dimension. The same basis functions are employed for approximating the unknown deformations, geometry modeling of the design domain and the level set function. In this research, three optimization problems including minimization of the mean compliance considering a certain amount of material, minimization of weight with avoiding local stress concentration as well as minimization of weight and strain energy under local stress constraints are dealt with. The sensitivity analyses for the optimization problems are carried out to obtain velocity functions on the boundaries. In order to move the boundaries towards optimum the Hamilton-Jacobi (H-J) equation is solved using the forward Euler scheme. In order to illustrate the performance of the method to obtain reasonable results with smooth boundaries, several numerical examples are presented and compared with well-known problems in literature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Methods in Applied Mechanics and Engineering - Volume 319, 1 June 2017, Pages 240-257
نویسندگان
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