Efficient computational approaches for analysis of thin and flexible multibody structures

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F21%3A43960984" target="_blank" >RIV/49777513:23520/21:43960984 - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/article/10.1007/s11071-021-06225-5" target="_blank" >https://link.springer.com/article/10.1007/s11071-021-06225-5</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11071-021-06225-5" target="_blank" >10.1007/s11071-021-06225-5</a>

Result language

angličtina

Original language name

Efficient computational approaches for analysis of thin and flexible multibody structures

Original language description

A large group of real mechanical problems can be modelled and analysed using the approaches of flexible multibody dynamics. The computational models in the form of differential-algebraic equations can be quite complex, and therefore it is suitable to develop efficient approaches for the analysis of such models. This paper deals with the development of fast and efficient computational techniques for the analysis of flexible and thin mechanical structures modeled using the absolute nodal coordinate formulation (ANCF). The first original contribution of this paper is the introduction of fast evaluation of nonlinear elastic forces of the ANCF cable element based on the pre-computation of various terms that are constant when evaluated numerically at Gaussian points. The second part of the paper is aimed at the usage of quasi-Newton methods, which led to the reduction of iteration matrix re-evaluations in case of Newmark type of numerical integration methods for equations of motion. Proposed improvements are implemented in an in-house software in MATLAB environment and their effects are tested on the cable-mass system considered as a flexible multibody system. The numerical results shown in the paper have proven the efficiency of the proposed algorithms. Real behaviour of testing mechanical systems was supported by presented experimental results.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20302 - Applied mechanics

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

NONLINEAR DYNAMICS

ISSN

0924-090X

e-ISSN

—

Volume of the periodical

103

Issue of the periodical within the volume

3

Country of publishing house

CH - SWITZERLAND

Number of pages

18

Pages from-to

2475-2492

UT code for WoS article

000613186700001

EID of the result in the Scopus database

2-s2.0-85100514130