Response Analysis of an Elasto-Plastic System Under Nonstationary Random Input

by T. Shimogo, Keio Univ, Japan,
Y. Oshinoya, Keio Univ, Japan,



Document Type: Proceeding Paper

Part of: Structural Safety and Reliability

Abstract:

This study presents that the variance of cumulative plastic deformation of a simple elasto-plastic structure under seismic excitation can be estimated in a relatively simple theoretical manner. A nonstationary response analysis was carried out by using a two-state method, in which the response is separated into an elastic part and a plastic part. It was clarified by a computer simulation that the variance of cumulative plastic deformation can be estimated within a good accuracy by the proposed method, if a damping ratio at the elastic region is about 0.03 to 0.1, even for relatively low yield level of the structure.



Subject Headings: Plastics | Elastic analysis | Excitation (physics) | Plastic analysis | Structural analysis | Load and resistance factor design | Elastoplasticity | Statistics

Services: Buy this book/Buy this article

 

Return to search