Assessment of dynamic response FD algorithms by beam and plate FE computations

Date

1988-10

Author

Alaylioglu, H.
Oral, Süha
Alaylıoğlu, Ayşe

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

233
views

0
downloads

Improvement in understanding of the process of direct integration of the equations of motion through numerical dissipation parameter interaction is being regarded as one of the significant achievements of structural dynamics research over the past quarter century. The numerical software fraternity has extended one-step integration algorithms, emphasizing controllable approximation characteristics with respect to such factors as period elongation and amplitude decay. These studies have resulted in setting up a class of implicit, second order finite difference (FD) generic models which are unconditionally stable depending on the range of influence of the corporate parameters. The aim of this paper is to review some of the strategems incorporating the dissipation control, and to provide representative numerical findings in beam and plate applications through a unification algorithm, which streamlines the intervention of alpha modifiers to Newmark's integration formalism by evoking a set of recurrence relations that serves to pool accessible and amendable dissipation parameters. Experience has shown that the beam and plate finite element (FE) response calculations provide considerable impetus to use Bossak's type integrator with large values of the dissipative parameter.

Subject Keywords

General engineering

URI

https://hdl.handle.net/11511/52034

Journal

Advances in Engineering Software (1978)

DOI

https://doi.org/10.1016/0141-1195(88)90035-6

Collections

Department of Mechanical Engineering, Article

Suggestions

OpenMETU
Core

RECONSTRUCTION OF PERMITTIVITY AND CONDUCTIVITY PROFILES OF A DIELECTRIC SLAB IN THE TIME DOMAIN BY DESCENT METHODS ONDER, M; Kuzuoğlu, Mustafa (Institution of Engineering and Technology (IET), 1992-10-01) An optimisation approach is presented for the problem of reconstructing the permittivity and conductivity profiles of a dielectric slab from the reflected and transmitted field data. The problem is treated as an optimal control problem where the norm of the difference of measured and calculated boundary data is minimised subject to the state equation governing the system. The original constrained optimisation problem is reduced to the evaluation of stationary points of an augmented functional which is obtai...
Mathematical modeling of horizontal two-phase flow through fully eccentric annuli Ömürlü, Çiğdem; Özbayoğlu, Evren; Department of Petroleum and Natural Gas Engineering (2006) The primary objective of this study is to understand the mechanism, the hydraulics and the characteristics, of the two-phase flow in horizontal annuli. While achieving this goal, both theoretical and experimental works have been conducted extensively. The METU-PETE-CTMFL (Middle East Technical University, Petroleum and Natural Gas Engineering Department, Cuttings Transport and Multiphase Flow Laboratory) multiphase flow loop consists of 4.84 m long eccentric horizontal acrylic pipes having 0.1143m inner dia...
Assessment of a frequency-domain linearised Euler solver for turbofan aft radiation predictions and comparison with measurements Özyörük, Yusuf (2010-03-31) This paper presents a frequency-domain computational aeroacoustics tool for predicting aft noise radiation through turbofan ducts and jets and its application to two realistic engine exhaust configurations which have been experimentally tested. The tool is based on the discretised axisymmetric form of the linearised Euler equations in conjunction with perfectly matched layer equations at the inlet and far-field boundaries using high-order finite differences. The resultant linear system of equations is inver...
Meta-Modeling of Complexity-Uncertainty-Performance Triad in Construction Projects Dikmen Toker, İrem; Erol, Huseyin; Birgönül, Mustafa Talat (Informa UK Limited, 2020-07-01) Although conceptualized in various ways within the project management literature, complexity is usually identified as one of the drivers of uncertainty, which may result in deviations from the expected project performance in the construction industry. Effective strategies to manage risk and complexity can only be formulated by understanding the complexity-uncertainty-performance triad in construction projects and modeling the non-linear interactions between these factors. In this study, a meta-modeling appr...
A computational procedure for estimating residual stresses and secondary plastic flow limits in nonlinearly strain hardening rotating shafts Eraslan, Ahmet Nedim (Springer Science and Business Media LLC, 2005-03-01) A computational procedure to estimate the residual stress distributions and the limit angular speeds for avoiding secondary plastic deformation in nonlinearly strain hardening rotating elastic-plastic shafts is given. The model is based on von Mises yield condition, J(2) deformation theory and a Swift-type hardening law. The boundary value problem for the governing nonlinear differential equation is solved by a shooting method using Newton iterations with numerically approximated tangent. Solid as well as h...

Citation Formats

H. Alaylioglu, S. Oral, and A. Alaylıoğlu, “Assessment of dynamic response FD algorithms by beam and plate FE computations,” Advances in Engineering Software (1978), pp. 175–182, 1988, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/52034.