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Stability and accuracy analysis of the central difference method for real-time substructure testing

✍ Scribed by B. Wu; H. Bao; J. Ou; S. Tian

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
128 KB
Volume
34
Category
Article
ISSN
0098-8847

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✦ Synopsis

Abstract

The central difference method (CDM) that is explicit for pseudo‐dynamic testing is also believed to be explicit for real‐time substructure testing (RST). However, to obtain the correct velocity dependent restoring force of the physical substructure being tested, the target velocity is required to be calculated as well as the displacement. The standard CDM provides only explicit target displacement but not explicit target velocity. This paper investigates the required modification of the standard central difference method when applied to RST and analyzes the stability and accuracy of the modified CDM for RST. Copyright © 2005 John Wiley & Sons, Ltd.

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