University of Illinois Urbana-Champaign

Dynamic Stability of Damage-Prone Inelastic Structural Systems

Williamson, E.B.; Hjelmstad, K.D.

Content Files
SRS-609.pdf

Permalink

https://hdl.handle.net/2142/14231

Description

Title
Dynamic Stability of Damage-Prone Inelastic Structural Systems
Author(s)
  • Williamson, E.B.
  • Hjelmstad, K.D.
Issue Date
1996-05
Keyword(s)
  • Deformation
  • Inelastic deformation
  • Earthquakes
Date of Ingest
2009-11-13T22:41:43Z
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.
Publisher
University of Illinois Engineering Experiment Station. College of Engineering. University of Illinois at Urbana-Champaign.
Series/Report Name or Number
Civil Engineering Studies SRS-609
Type of Resource
text
Genre of Resource
Technical Report
Language
en
Permalink
http://hdl.handle.net/2142/14231
Sponsor(s)/Grant Number(s)
National Science Foundation Grant CES 86-58019

Owning Collections

Civil Engineering Studies: Structural Research Series PRIMARY