Files in this item
Files | Description | Format |
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application/pdf ![]() | Structural Research Series 609 |
Description
Title: | Dynamic Stability of Damage-Prone Inelastic Structural Systems |
Author(s): | Williamson, E.B.; Hjelmstad, K.D. |
Subject(s): | Deformation
Inelastic deformation Earthquakes |
Abstract: | The behavior of a simple mechanical system, experiencing large deformations and inelastic material response with damage. is presented. Because the differential equations that describe the motion are highly nonlinear and coupled for the multi-degree-of-freedom system, a numerical procedure was employed to determine the response. While most engineering approaches to the design of such systems utilize a static approach, results from this research indicate that static analyses cannot effectively predict the behavior of a dynamic, damage-prone system. Most importantly, the rate of damage accumulation will have the greatest impact on the stability properties of the system. In fact, for certain load cases, a system that accrues more damage may be less prone to instability than a system that suffers little damage. For this research, it was assumed that damage caused a reduction in the stiffness such that the structure experienced cyclic softening with increased cycles of loading. Application of the results to seismic-resistant design was considered. |
Issue Date: | 1996-05 |
Publisher: | University of Illinois Engineering Experiment Station. College of Engineering. University of Illinois at Urbana-Champaign. |
Series/Report: | Civil Engineering Studies SRS-609 |
Genre: | Technical Report |
Type: | Text |
Language: | English |
URI: | http://hdl.handle.net/2142/14231 |
Sponsor: | National Science Foundation Grant CES 86-58019 |
Date Available in IDEALS: | 2009-11-13 |