Response analysis of systems under narrow band stationary and nonstationary random excitations

Book · Tue Dec 31 04:00:00 EST 1996

OSTI ID:418133

To, C W.S.; Chen, Z ^[1]

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1. Univ. of Western Ontario, London (Canada). Dept. of Mechanical Engineering

The stochastic central difference (SCD) method was first introduced in 1984 by the first author. Over the last decade various similar direct integration methods for random response of multi-degree-of-freedom (MDOF) systems have also been proposed by the first author and his associates. These direct integration schemes have been developed for the computation of responses of nonlinear MDOF systems under wide band stationary and nonstationary random excitations. This paper reports the results of an investigation the main aim of which is to extend the SCD method and its various efficient and accurate derivatives to problems involving with narrow band stationary and nonstationary random excitations. Results of two typical simple systems obtained by the method proposed here are compared with those determined by the Monte Carlo simulation (MCS) technique. They indicate that the method is very efficient and accurate with respect to the MCS data, and that it can provide a more realistic representation of many excitation processes in the field of structural dynamics.

• OSTI ID: 418133
• Report Number(s): CONF-960706--; ISBN 0-7918-1778-4
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
CALCULATION METHODS
COMPARATIVE EVALUATIONS
MECHANICAL STRUCTURES
MECHANICAL VIBRATIONS
RESPONSE FUNCTIONS
STOCHASTIC PROCESSES
THEORETICAL DATA