کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10287140 | 504497 | 2005 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The dynamical identification of the tensile force in ancient tie-rods
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
مهندسی ژئوتکنیک و زمین شناسی مهندسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The dynamical identification of the tensile force in ancient tie-rods The dynamical identification of the tensile force in ancient tie-rods](/preview/png/10287140.png)
چکیده انگلیسی
The paper addresses the problem of identifying the tensile axial force of metallic tie-rods in masonry arches and vaults. The identification procedure uses the first three modal frequencies of the tie-rod, measured by means of a dynamic test. The reference structural system consists of a beam with uniform section, subjected to an axial tensile force and spring-hinged at both ends. Besides the axial tensile force, the unknown variables are the bending stiffness of the section and the stiffness of the rotational springs. Since the characteristic equation of this structural system does not allow analytical solutions, the paper proposes an approximate numerical solution, based on a minimization procedure of a suitable error function. The robustness of the method is tested by identifying a number of ideal tie-rods, modelled by means of a FEM code. Moreover, since the homogeneity of the tie-rod's mechanical stiffness throughout its axis and the equality of the constraint conditions of its extremes are hypothesised, it is verified how such hypotheses may influence the tensile force estimation. Finally, the method is tested on real tie-rods.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Structures - Volume 27, Issue 6, May 2005, Pages 846-856
Journal: Engineering Structures - Volume 27, Issue 6, May 2005, Pages 846-856
نویسندگان
Sergio Lagomarsino, Chiara Calderini,