Exact Solution of Nonlinear Hysteretic Responses Using Complex Mode Superposition Method and its Application to Base-Isolated Structures
Publication: Journal of Engineering Mechanics
Volume 131, Issue 3
Abstract
In this paper, the responses of the structures subjected to arbitrary ground motions are evaluated. With the problem formulated in a state-space form, an exact solution scheme capable of dealing with a variety of material cases is proposed, including cases when postyield stiffness exhibits strain-hardening, strain-softening, and elastic-perfectly plastic properties, respectively. The proposed method can provide much higher accuracy, and requires less computational effort than the traditional step-by-step integration solution technique. The reason for these advantages is discussed and the related formulas are provided. In addition, a new efficient approach is provided for evaluating dynamic response of nonlinear base-isolated structures by taking advantage of their characteristics. Two buildings excited by real earthquake and harmonic ground motions are considered in numerical examples to demonstrate the efficiency of the proposed method.
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 131 • Issue 3 • March 2005
Pages: 282 - 289
Copyright
© 2005 ASCE.
History
Received: Nov 4, 2003
Accepted: Jun 15, 2004
Published online: Mar 1, 2005
Published in print: Mar 2005
Notes
Note. Associate Editor: Nicos Makris
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