Interaction in primary-secondary systems

T. Igusa, A. Der Kiureghian

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations


Primary-secondary systems, consisting of a primary subsystem supporting a relatively light secondary subsystem, are characterized by special dynamic characteristics. One important characteristic is interaction, which is mathematically manifested by coupling between the equations of motion of the two subsystems and results in a reduction in the secondary response. The dynamic analyses of primary-secondary systems is often performed using a decoupled system of equations which is simpler to analyze, but may give overly conservative results leading to unnecessarily costly designs. In this paper, interaction in primary-secondary systems is examined in detail, criteria for assessing the importance of interaction are developed, and the concepts are illustrated with examples of interacting systems.

Original languageEnglish (US)
Pages (from-to)45-50
Number of pages6
JournalAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
StatePublished - Dec 1 1988
Externally publishedYes
EventDynamics and Seismic Issues in Primary and Secondary Systems - Pittsburgh, PA, USA
Duration: Jun 19 1988Jun 23 1988

ASJC Scopus subject areas

  • Mechanical Engineering


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