کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6917374 | 862954 | 2014 | 28 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Improved numerical integration for locking treatment in isogeometric structural elements, Part I: Beams
ترجمه فارسی عنوان
بهبود ادغام عددی برای قفل درمان در عناصر ساختاری ایزوگومتریک، قسمت اول: پرتوهای
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی کامپیوتر
نرم افزارهای علوم کامپیوتر
چکیده انگلیسی
A general mathematical framework is proposed, in this paper, to define new quadrature rules in the context of B-spline/NURBS-based isogeometric analysis. High order continuity across the elements within a patch turned out to have higher accuracy than C0 finite elements, as well as a better time efficiency. Unfortunately, a maximum regularity accentuates the shear and membrane locking in thick structural elements. The improved selective reduced integration schemes are given for uni-dimensional beam problems, with basis functions of order two and three, and can be easily extended to higher orders. The resulting B-spline/NURBS finite elements are free from membrane and transverse shear locking. Moreover, no zero energy modes are generated. The performance of the approach is evaluated on the classical test of a cantilever beam subjected to a distributed moment, and compared to Lagrange under-integrated finite elements.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Methods in Applied Mechanics and Engineering - Volume 279, 1 September 2014, Pages 1-28
Journal: Computer Methods in Applied Mechanics and Engineering - Volume 279, 1 September 2014, Pages 1-28
نویسندگان
C. Adam, S. Bouabdallah, M. Zarroug, H. Maitournam,