Novel Partitioned Integration Method Based on Newmark's Scheme for Structural Dynamic Problems

Abstract:

Systems of ODEs arising from transient structural dynamics generally exhibit high-frequency/low-frequency and linear/nonlinear behaviours of subsets of state variables. This paper resorts to the use of different time integrators with different time steps for subsystems, to tailor each method and its time step to the solution behaviour of the corresponding subsystem. Anovel partitioned integration method with the acceleration continuity is proposed whose velocity continuity is also ensured by means of the mass projection strategy. Both its stability and accuracy properties are examined through numerical analysis on Single-DoF split mass system.

• Periodical: Applied Mechanics and Materials (Volumes 580-583)
• Pages: 2996-3002
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.580-583.2996
• Online since: July 2014
• Authors: Chuan Guo Jia*, Ying Min Li, Hong Liu Xia, Li Ping Liu
• Keywords: Differential-Algebraic Equations, Newmark Methods, Partitioned Methods, Subcycling

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