Explicit multistep time integration for discontinuous elastic stress wave propagation in heterogeneous solids

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F19%3A00506235" target="_blank" >RIV/61388998:_____/19:00506235 - isvavai.cz</a>

Result on the web

<a href="https://onlinelibrary.wiley.com/doi/abs/10.1002/nme.6027" target="_blank" >https://onlinelibrary.wiley.com/doi/abs/10.1002/nme.6027</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/nme.6027" target="_blank" >10.1002/nme.6027</a>

Result language

angličtina

Original language name

Explicit multistep time integration for discontinuous elastic stress wave propagation in heterogeneous solids

Original language description

A multistep explicit time integration algorithm is presented for tracking the propagation of discontinuous stress waves in heterogeneous solids whose subdomain-to-subdomain critical time step ratios range fromtens to thousands. The present multistep algorithm offers efficient and accurate computations for tracking discontinuous waves propagating through such heterogeneous solids. The present algorithm, first, employs the partitioned formulation for representing each subdomain,whose interface compatibility is enforced via the method of the localized Lagrange multipliers. Second, for each subdomain, the governing equations of motion are decomposed into the extensional and shear components so that tracking of waves of different propagation speeds is treated with differentncritical step sizes to significantly reduce the computational dispersion errors. Stability and accuracy analysis of the present multistep time integration is performed with one-dimensional heterogeneous bar. Analyses of the present algorithm are also demonstrated as applied to the stresswave propagation in onedimensional heterogeneous bar and in heterogeneous plain strain problems.

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

2019

Confidentiality

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

Name of the periodical

International Journal for Numerical Methods in Engineering

ISSN

0029-5981

e-ISSN

—

Volume of the periodical

118

Issue of the periodical within the volume

5

Country of publishing house

GB - UNITED KINGDOM

Number of pages

27

Pages from-to

276-302

UT code for WoS article

000462895900003

EID of the result in the Scopus database

2-s2.0-85063004441