Indexed by:Journal Article

Date of Publication:2017-10-01

Journal:COMPUTERS & STRUCTURES

Included Journals:Scopus、EI、SCIE

Volume:190

Page Number:126-149

ISSN:0045-7949

Key Words:Structural dynamics; Wave propagation; Time integration; Implicit; Numerical dissipation

Abstract:A comparative study of three composite implicit schemes including the Bathe scheme (Bathe and Baig, 2005), the ITBDF scheme (Chandra et al., 2015) and the Wen scheme (Wen et al., 2017) is conducted in this paper. The stability and accuracy characteristics of these schemes are studied and compared by analytical and numerical simulation analysis. In the solution of wave propagation problems, a demonstrative dispersion analysis is given and problems are solved to illustrate the capabilities of the schemes for the solution of wave propagation problems as well as the numerical dissipation characteristics of the schemes. The nonlinear dynamic behavior of the Wen scheme is studied by considering commonly used nonlinear dynamic problems where the nonlinear performance of the scheme is exclusively compared with the Bathe and TTBDF schemes. The priority ranks of three presented composite schemes for different types of dynamic problems are obtained by theoretical and numerical analysis. (C) 2017 Elsevier Ltd. All rights reserved.