Newmark method

Vibration analysis of multi-span bidirectional functionally graded material (2D-FGM) beams subjected to a moving load is presented by using a high-order deformation theory. The material properties of the beam are assumed to vary continuously in the thickness and longitudinal directions by a power-law distribution. The dynamic response of the beam is computed with the aid of the Newmark method.

8p viwinter2711 18-10-2021 13 1   Download

Nghiên cứu này trình bày về độ nhạỵ của chuyển vị tấm có vết nứt sau khi dùng phương pháp Phần tử hữu hạn mở rộng (eXtended Finite Element Method - XFEM) và biến đổi Wavelet được phân tích. Sự ảnh hưởng của chiều dài vết nứt và vị trí vết nứt được nghiên cứu. Các giá trị chuyển vị thu được từ bài toán tĩnh được tính toán bằng XFEM và phương pháp Newmark dựa trên mô hình phần tử đẳng tham số tứ giác 4 nút. Mời các bạn tham khảo!

10p interstellar 22-09-2021 22 1   Download

This paper presents study and comparison of numerical methods which are used for evaluation of dynamic response. A Single Degree of Freedom (SDF)-linear problem is solved by means of Newmark’s Average acceleration method [2], Linear acceleration method [2], Central Difference method [6,7] with the help of MATLAB. The advantages, disadvantages, relative precision and applicability of these numerical methods are discussed throughout the analysis.

10p tunelove 12-06-2021 13 1   Download

The vibration of the composite stiffened cylindrical shell with piezoelectric layers subjected to shock wave is presented in this paper. The differential equations which describe the nonlinear oscillation dynamic of the shell are solved by the Newton-Raphson iterative method in combination with the Newmark direct integration method. Numerical results are solved for the structures subjected to the effect of shock wave in MATLAB software. On the basis of the program, the effect of piezoelectric and stiffener on the nonlinear oscillation of the cylindrical composite shell are considered.

12p cothumenhmong11 05-05-2021 14 1   Download

The dynamic response to variable magnitude moving distributed masses of simply supported non-uniform Bernoulli–Euler beam resting on Pasternak elastic foundation is investigated in this paper. The problem is governed by fourth order partial differential equation with variable and singular coefficients. The main objective of this work is to obtain closed form solution to this class of dynamical problem.

16p nguaconbaynhay11 07-04-2021 7 1   Download

The study evaluated the translation quality of the Vietnamese version of the film “Rio”, which was translated and dubbed in the project of MegaStar Media Ltd. Company, Vietnam in April 2011. To reach its aim, the study used four methods including analysis and comparison, which were based on Newmark’s model. In addition, statistical and observational methods were also applied to examine the synchronisation of each utterance and its translated version.

12p miulovesmile4 19-11-2018 52 1   Download

This paper presents a modeling technique t hat derives from t he work of Newmark to describe the behavior of steel-concrete composite beams with elastic shear connection. The model is used to derive expressions for beam curvat ure, rotation and defl ection under monotonic load from wh ich the stiffness matrix is derived and finite element analysis performed on a set of illustrat ive examples. Iviodel results are compared to those obtained using other method.

10p thienthanquydu 21-10-2018 24 0   Download

This paper presents a numerical method for dynamic calculation of third order systems involving fractional operators. Using the Liouville-Rieman’s definition of fractional derivatives, a numerical algorithm is developed on base of the well-known Newmark integration method to calculate dynamic response of third order systems. Then, we apply this method to calculate linear vibrations of viscoelastic systems containing fractional derivatives.

9p thienthanquydu 17-10-2018 27 0   Download

This paper discusses the dynamic characteristics of an elastically supported Euler-Bernoulli beam subjected to an initially loaded compressive force and a moving point load. The eccentricity of the axial force is taken into consideration. The timehistories for beam deflection and the dynamic magnification factors are computed by using the Galerkin finite element method and the implicit Newmark method.

19p thienthanquydu 17-10-2018 40 0   Download

discretised vào bước thời gian n t kích thước. Giả sử một gia tốc trung bình trong thời gian bước hệ thống phương trình vi phân có thể được chuyển đổi thành một hệ thống các phương trình đại số (Newmark method4)

46p kimku18 26-10-2011 55 4   Download