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发布时间：2019-03-10

论文类型：期刊论文

发表时间：2007-07-25

发表刊物：EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS

收录刊物：Scopus、EI、SCIE

卷号：36

期号：9

页面范围：1127-1149

ISSN号：0098-8847

关键字：real-time tests; substructure tests; pseudodynamic tests; hybrid simulation; implicit integration; equivalent force control

摘要：This paper presents a new method, called the equivalent force control method, for solving the nonlinear equations of motion in a real-time substructure test using an implicit time integration algorithm. The method replaces the numerical iteration in implicit integration with a force-feedback control loop, while displacement control is retained to control the motion of an actuator. The method is formulated in such a way that it represents a unified approach that also encompasses the effective force test method. The accuracy and effectiveness of the method have been demonstrated with numerical simulations of real-time substructure tests with physical substructures represented by spring and damper elements, respectively. The method has also been validated with actual tests in which a Magnetorheological damper was used as the physical substructure. Copyright (c) 2007 John Wiley & Sons, Ltd.