Počet záznamů: 1
Explicit multistep time integration for discontinuous elastic stress wave propagation in heterogeneous solids
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SYSNO ASEP 0506235 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Explicit multistep time integration for discontinuous elastic stress wave propagation in heterogeneous solids Tvůrce(i) Cho, S.S. (ed. KR)
Kolman, Radek (UT-L ed.) RID
González, J. A. (ed. ES)
Park, K.C. (ed. US)Celkový počet autorů 4 Zdroj.dok. International Journal for Numerical Methods in Engineering. - : Wiley - ISSN 0029-5981
Roč. 118, č. 5 (2019), s. 276-302Poč.str. 27 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova component-wise partitioned equations of motion ; explicitmultistep time integration ; heterogeneous solids ; localized Lagrange multipliers Vědní obor RIV BI - Akustika a kmity Obor OECD Applied mechanics CEP EF15_003/0000493 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy GA17-22615S GA ČR - Grantová agentura ČR Způsob publikování Omezený přístup Institucionální podpora UT-L - RVO:61388998 UT WOS 000462895900003 EID SCOPUS 85063004441 DOI 10.1002/nme.6027 Anotace 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 different
critical 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.Pracoviště Ústav termomechaniky Kontakt Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Rok sběru 2020 Elektronická adresa https://onlinelibrary.wiley.com/doi/abs/10.1002/nme.6027
Počet záznamů: 1