کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
511406 865847 2005 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Response of beams on nonlinear viscoelastic foundations to harmonic moving loads
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
Response of beams on nonlinear viscoelastic foundations to harmonic moving loads
چکیده انگلیسی

The response of infinite beams supported by nonlinear viscoelastic foundations subjected to harmonic moving loads is studied. A straightforward solution technique applicable in the frequency domain is presented in this paper. The governing equations are solved using a perturbation method in conjunction with complex Fourier transformation. A closed-formed solution is presented in an integral form based on the presented Green’s function and the theorem of residues is used for the calculation of integrals. The solution is directed to compute the deflection and bending moment distribution along the length of the beam. A parametric study is carried out and influences of the load speed and frequency on the beam responses are investigated. It is found that for an excitation frequency of Ω there exist superharmonics of 3Ω O(ε), 5Ω O(ε2), …, (2n − 1) × Ω O(εn−1), n = 1, 2, …

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computers & Structures - Volume 83, Issues 23–24, September 2005, Pages 1865–1877
نویسندگان
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