Further insights of a composite implicit time integration scheme and its performance on linear seismic response analysis. (15th August 2021)

• Record Type: Journal Article
• Authors: Liu, Tianhao; Huang, Fanglin; Wen, Weibin; He, Xuhui; Duan, Shengyu; Fang, Daining
• Is Part Of: Engineering structures. Volume 241(2021)
• Publication Date: 2021-08-15
• Subjects: Time integration -- Structural dynamics -- Implicit -- Seismic response; Structural engineering -- Periodicals; Structural analysis (Engineering) -- Periodicals; Construction, Technique de la -- Périodiques; Génie parasismique -- Périodiques; Pression du vent -- Périodiques; Earthquake engineering; Structural engineering; Wind-pressure; Periodicals; 624.105
• DOI: 10.1016/j.engstruct.2021.112490
• Languages: English
• ISSNs: 0141-0296

Abstract

Highlights: Algorithmic properties of a sub-step composite scheme are studied to obtain optimal parameter. Accuracy of the sub-step composite scheme is first analyzed considering the load effect. The presented composite scheme is more desirable for seismic response analysis than classical schemes. Abstract: In this work, some further insights of a composite implicit time integration scheme proposed by Wen et al. are presented. The local truncation error of the proposed scheme is first derived, and analytical accuracy solution is thus acquired as well as the optimal value of algorithmic parameter. The influence of approximate loads on computation accuracy of the proposed scheme is quantified by local truncation errors. More detailed analysis is conducted to demonstrate the desirable performance of the proposed scheme on accuracy, stability and numerical dissipation properties. The calculation procedure of the presented scheme for seismic response is proposed. Numerical examples demonstrate the presented scheme possesses desirable accuracy and efficiency for seismic response analysis when compared with other representative schemes.