A second-order scheme for integration of one-dimensional dynamic analysis

  • Ma H
  • Qin Q
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This paper proposes a second-order scheme of precision integration for dynamic analysis with respect to long-term integration. Rather than transforming into first-order equations, a recursive scheme is presented in detail for direct solution of the homogeneous part of second-order algebraic and differential equations. The sine and cosine matrices involved in the scheme are calculated using the so-called 2Nalgorithm. Numerical tests show that both the efficiency and the accuracy of homogeneous equations can be improved considerably with the second-order scheme. The corresponding particular solution is also presented, incorporated with the second-order scheme where the excitation vector is approximated by the truncated Taylor series. © 2005 Elsevier Ltd. All rights reserved.

Author-supplied keywords

  • Differential quadrature method
  • Initial problem
  • Precision integration
  • Second-order scheme

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