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Analysis of nonlinear sliding structures by modified stochastic linearization methods

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Abstract

Probabilistic characteristics of a sliding structure is investigated by using new versions of stochastic linearization technique. The structure is composed of base part and upper part, which are connected to each other in a spring-damping system. Coulomb friction between the base structure and earth ground is considered. Two alternative versions of stochastic linearization approach, suggested by X. Zhang and I. Elishakoff, respectively, are applied to such a sliding structure to evaluate its statistical properties. Compared with the results of Monte Carlo simulation, the two new approaches are performing much better than the conventional one in their applications to the sliding structure. Moreover, numerical results indicate that the criterion proposed by Elishakoff turns out to be superior to all other versions in the problem under study. Numerical results also suggest that the entire structure may be replaced by the rigid body in the sliding problem as long as the difference of velocity responses are considered less important than those of displacement responses.

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Authors and Affiliations

  1. Department of Civil Engineering and Operations Research, Princeton University, 08544, Princeton, NJ, U.S.A.

    Ruichong Zhang & Masanobu Shinozuka

  2. Center for Applied Stochastics Research, Florida Atlantic University, 33431-0991, Boca Raton, FL, U.S.A.

    Isaac Elishakoff

  3. Department of Mechanical Engineering, Florida Atlantic University, 33431-0991, Boca Raton, FL, U.S.A.

    Isaac Elishakoff

Authors
  1. Ruichong Zhang
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  2. Isaac Elishakoff
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  3. Masanobu Shinozuka
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Zhang, R., Elishakoff, I. & Shinozuka, M. Analysis of nonlinear sliding structures by modified stochastic linearization methods. Nonlinear Dyn 5, 299–312 (1994). https://doi.org/10.1007/BF00045339

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  • DOI: https://doi.org/10.1007/BF00045339

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