Free vibration analysis
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In this work, the free vibration analysis of Timoshenko microbeams made of the Functionally Graded Material (FGM) on the Winkler–Paternak elastic foundation based on the Modified Coupled Stress Theory (MCST) is investigated. Material characteristics of the beam vary throughout the thickness according to the power distribution and are estimated though Mori–Tanaka, Hashin–Shtrikman and Voigt homogenization techniques.
13p dianmotminh02 03-05-2024 8 2 Download
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In this paper, the author uses the forced displacement method combined with the finite element method to study the free vibration of the bar with different boundary conditions with considering the influence of the shear strain, the theory used here is the full beam theory.
10p visherylsandber 04-07-2022 19 3 Download
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The objectives of the thesis: The thesis has developed a technique by combining the equivalent linearization method and the weighted averaging value to analyze the responses of some undamped free nonlinear vibrations.
31p extraenglish 24-05-2021 13 3 Download
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The thesis has developeda technique by combining the equivalent linearization method and the weighted averagingvalueto analyze the responses of some undamped free nonlinear vibrations.
31p capheviahe29 17-03-2021 27 3 Download
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This paper is concerned with the vibration and stability analysis of thick rectangular plates resting on elastic foundation, which is distributed over the particular area of the plate. A two-parameter (Pasternak) model is considered to describe the elastic foundation.
18p tohitohi 19-05-2020 8 0 Download
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This paper presents a numerical analysis of free vibration of thin circular and annular plate using finite element method. The first five natural frequencies are presented for uniform annular plates of various inner-to-outer radius ratios, with nine possible combinations of free, clamped and simply supported boundary conditions at the inner and outer edges of plates.
8p tohitohi 19-05-2020 28 1 Download
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In this paper free vibration analysis of eccentric and concentric stiffened isotropic plate with central stiffener and double stiffener has been studied and effect of various parameters such as boundary conditions, aspect ratio on non-dimensional frequency parameter of plate are investigated.
12p tohitohi 19-05-2020 14 0 Download
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This paper presents two parameter foundation models for free vibration analysis of non-homogeneous orthotropic rectangular plate resting on elastic foundation whose concept is extensively used in engineering practice.
12p tohitohi 19-05-2020 10 0 Download
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Cutouts are commonly used as access port for mechanical and electrical structures. Most of the tructures generally work under severe dynamic loading and different constrained conditions during their service life. This may lead to vibration of the structure.
8p tohitohi 19-05-2020 13 2 Download
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This paper presents the free vibration analysis of stiffened isotropic plate by means of finite element method. Stiffeners are used in plates to increase the strength and stiffness. The effect of position of stiffeners on isotropic plate has been studied which involve the possible combination of clamped and free edge condition.
10p tohitohi 19-05-2020 10 0 Download
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Finite element method is used to study the free vibration analysis of functionally graded skew plates. The material properties of the skew plates are assumed to vary continuously through their thickness according to a power-law distribution of the volume fractions of the plate constituents.
10p tohitohi 19-05-2020 11 0 Download
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In this paper, an analytical method is proposed for calculation of natural frequencies of a delaminated composite beam from both free and constrained mode frequencies. In previous studies, the frequencies of a delaminated composite beam were computed with assumption of occurring open or close delamination during the vibration.
8p tohitohi 19-05-2020 18 1 Download
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In this paper, a differential quadrature element method (DQEM) is developed for free transverse vibration analysis of a non-uniform cantilever Timoshenko beam with multiple concentrated masses.
12p tohitohi 19-05-2020 11 1 Download
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The present paper addresses the problem for free vibration of multistep Timoshenko beams with arbitrary number of cracks, continuing the work accomplished in [28], where the problem was studied on the base of Euller-Bernoulli beam theory. First, the obtained general solution of uniform Timoshenko beam is employed to develop the TMM for modal analysis of multistep Timoshenko beam with multiple cracks. Then, effect of beam slenderness and stepped change in cross section on sensitivity of natural frequencies to cracks is thoroughly examined.
16p abcxyz123_02 03-03-2020 18 2 Download
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+ Các biện pháp phân tích dao động tự do (Free Vibration Analysis Procedure): được thực hiện phân tích trạng thái tĩnh tuyến tính (thẳng), nó không bao trùm tất cả chi tiết. Việc phân tích dao động tự do sử dụng các bước sau: - Gán hình học - Gán những thuộc tính của vật chất - Định nghĩa các kiểu vùng tiếp xúc - Định nghĩa vùng điều khiển mắt lưới - Định nghĩa các kiểu phân tích - Tìm các kết quả tần số yêu cầu - Tìm các tần số tập hợp ...
5p vteo20 01-10-2010 181 76 Download
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Dao động tự do là dao động mà các tần số chỉ phụ thuộc vào các đặc tính của hệ mà không phụ thuộc vào các yếu tố bên ngoài Trong phần này, việc mô phỏng dao động tự do được thực hiện một cách tổng quát. Trong mô phỏng việc phân tích dao động tự do tương tự như việc phân tích trạng thái tuyến tính (thẳng) Bài toán tính dao động tự do có phương pháp chính cần phải làm: + Cơ sở của phân tích dao động tự do (Free Vibration Analysis): Tính toán dao động tự...
14p vteo20 01-10-2010 193 78 Download