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Studies of Newmark method for solving nonlinear systems: (I) basic analysis

  • Shuenn Yih Chang

Research output: Contribution to journalArticlepeer-review

52 Scopus citations

Abstract

The performance of the Newmark method in the solution of linear elastic systems can be reliably predicted by the currently available evaluation techniques. However, its performance for solving nonlinear systems is still not clear. Therefore, its numerical characteristics in the solution of nonlinear systems are explored in this study by using a newly developed technique. Only a specific implementation of the Newmark method is studied in this paper although there are several possible implementations for this integration method. It seems numerical properties of the Newmark method in the solution of linear elastic and nonlinear systems can be entirely captured by the newly developed technique. Although this technique is only aimed at a specific time step, it is still indicative for the whole step-by-step integration procedure since this procedure consists of each time step.

Bibliographical note

Funding Information:
The author is grateful to acknowledge that this study is financially supported by the National Science Council, Taiwan, R.O.C., under Grant No. NSC-91-2218-E-027-010.

Keywords

  • Accuracy
  • Degree of nonlinearity
  • Evaluation
  • Nonlinear system
  • Stability

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