کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4919714 | 1429075 | 2017 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A form-finding method based on the geometrically exact rod model for bending-active structures
ترجمه فارسی عنوان
یک روش پیدا کردن فرم بر اساس مدل میله ای هندسی دقیق برای ساختارهای خمشی فعال است
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کلمات کلیدی
پیدا کردن فرم ساختارهای خمشی فعال، آرامش دینامیکی، مدل میله دقیق هندسی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی
In the field of bending-active structures, the complexity of finding beforehand the equilibrium configuration and the non-linearity of the structural response are main issues during the conceptual phase. The use of tools based on classical form-finding procedures as dynamic relaxation is the main trend today; different mechanical models with 3, 4 or 6 degrees of freedom have been implemented for modelling the bending effect. However, there is a well-established class of mechanical models which has been specifically designed to reproduce the behaviour of very flexible structures and has not been used so far in form-finding of bending-active structures. These are derived from the so-called geometrically exact (or Reissner-Simo) beam theory, and they are able to treat arbitrarily large rotations and displacements. In this paper, we present the development of a form-finding tool based on Reissner-Simo's theory and the dynamic relaxation method, in order to find the static equilibrium of the system. The choice of form-finding parameters as the target curve length and the kinematic constraints at beam ends will determine the shape of the final structure in the 'design-oriented' process. Several numerical examples on a range of structures are tested to validate the formulation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Structures - Volume 152, 1 December 2017, Pages 549-558
Journal: Engineering Structures - Volume 152, 1 December 2017, Pages 549-558
نویسندگان
J. Bessini, C. Lázaro, S. Monleón,