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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:SCIE、EI、Scopus
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.