A Stress-Weighted Damage Model for Ductile Fracture Initiation in Structural Steel Undercyclic Loading and Generalized Stress States
Abstract/Contents
- Abstract
- Fracture in steel structures represents a critical limit state in evaluating the safety and resiliency of civil infrastructure during earthquakes. This importance was demonstrated by the widespread fractures observed in older steel connections during the 1994 Northridge earthquake, and in modern connections during the 2011 Christchurch Earthquake. The application of traditional crack-tip fracture mechanics to structural design provisions has successfully delayed the onset of Northridge-type brittle fracture. However, the extreme strain capacity in modern ductile connections increases the relevance of ductile fracture. Recent developments in 'local' fracture models have proven successful at predicting ductile fracture under many conditions. However, the application of these models has been limited due to their limited scope and difficulty in evaluation of the necessary continuum parameters. The current objective in the structural engineering community of replacing full-scope experiments with advanced finite element simulations require accurate models and calibration techniques to evaluate cyclic plasticity and fracture predictions.
Description
| Type of resource | text |
|---|---|
| Date created | October 2014 |
Creators/Contributors
| Author | Smith, CM |
|---|---|
| Author | Deierlein, G |
| Author | Kanvinde, A |
Subjects
| Subject | steel fracture |
|---|---|
| Subject | ductile fracture |
| Subject | stress |
| Subject | plastic materials |
| Subject | damaged-based model |
| Subject | micrographic |
| Subject | northridge-type |
| Subject | brittle fracture |
| Subject | christchurch |
| Subject | northridge |
| Genre | Technical report |
Bibliographic information
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- This work is licensed under a Creative Commons Attribution 3.0 Unported license (CC BY).
Preferred citation
- Preferred Citation
- Smith, CM and Deierlein, G and Kanvinde, A. (2014). A Stress-Weighted Damage Model for Ductile Fracture Initiation in Structural Steel Undercyclic Loading and Generalized Stress States. John A. Blume Earthquake Engineering Technical Report 187. Stanford Digital Repository. Available at: http://purl.stanford.edu/qy227tf3022
Collection
John A. Blume Earthquake Engineering Center Technical Report Series
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- Contact
- jabeec-email@stanford.edu
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