Results 111 to 120 of about 1,690 (132)

Four-stage Newmark method for structural dynamics analysis

AIP Conference Proceedings, 2017
This paper develops a four-stage direct integration scheme for structural dynamics analysis. Based on Newmark method, the new scheme is formulated by expanding displacement to the fourth derivative. The stability, accuracy and dissipation of the new scheme are discussed, which results in two optimal sets of control parameters δ and α.
Huimin Zhang, Yufeng Xing, Zhenyu Li
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Modified Newmark method for head-disk interface dynamics

Computers & Structures, 1998
Abstract The head-disk assembly in a disk drive has been modeled as a multi-degree-of-freedom system. To simulate the dynamics of the head-disk assembly, the Newmark method with δ > 1 2 , α > 1 4 is usually applied. This method may introduce some algorithmic dissipation which is desired for eliminating high-frequency oscillation ...
Sheng, Gang, Liu, Bo
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On accuracy, stability and efficiency of the Newmark method with incomplete solution by multilevel methods

International Journal for Numerical Methods in Engineering, 1999
Summary: We examine an incomplete iterative solver aimed at an approximate solution of equilibrium equations resulting from the finite element semidiscretization in space. Our approach is motivated by the fact that: (i) the effective stiffness matrix is well-conditioned because of the stabilizing effect of diagonally dominated mass matrix; (ii) the ...
Fish, Jacob, Chen, Wen
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A technique for overcoming load discontinuity in using Newmark method

Journal of Sound and Vibration, 2007
Although a closed form solution can be obtained for the shock response to an impulse by using the Duhamel integral method for a single degree-of-freedom system, it is analytically verified herein that an extra amplitude distortion will be introduced at the end of the impulse by using the Newmark method.
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Accuracy Evaluation of Newmark Method Referring to Theoretical Solutions

Journal of Earthquake Engineering, 2008
Current accuracy evaluation of a step-by-step integration method is generally based on the numerical solution itself and the exact solution is not referred to except for period distortion. Furthermore, the numerical accuracy associated with external force is generally not considered.
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Extensions of the dynamic Newmark method for seismic stability analysis of a rock block

International Journal for Numerical and Analytical Methods in Geomechanics, 2021
Xiaodong Fu, Yongqiang Zhou
exaly  

Insight to the Newmark Implicit Time Integration Method for Solving the Wave Propagation Problems

Iranian Journal of Science and Technology - Transactions of Civil Engineering, 2021
Sobhan Rostami, Reza Kamgar
exaly  

Applying the Newmark Method to the Discontinuous Deformation Analysis

2014
Discontinuous deformation analysis (DDA) is a newly developed simulation method for discontinuous systems. It was designed to simulate systems with arbitrary shaped blocks with high efficiency while providing accurate solutions for energy dissipation. But DDA usually exhibits damping effects that are inconsistent with theoretical solutions.
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A modified Newmark block method for determining the seismic displacement of a slope reinforced by prestressed anchors

Computers and Geotechnics, 2023
Yuliang Lin, Hao Xing
exaly  

Selection and modification of ground motion records using a weighted scaling method based on the Newmark-Hall target spectrum

Structures, 2022
Dongsheng Wang
exaly