Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

An Energy Model for Bifurcation Analysis of a Double-Notched Concrete Panel: Continuum Model

An Energy Model for Bifurcation Analysis of a Double-Notched Concrete Panel: Continuum Model In this paper, the uni-axial tension of double-notched concrete specimens is analyzed by using a continuum plasticity model. As in a companion paper, the concept of minimization of the second-order energy is used as the criterion for judging a bifurcation. The energy computation is formulated in standard continuum plasticity. The analysis confirms that the unsymmetrical crack propagation (i.e. strains localizing on one side of the specimen) may occur either before or after the peak load. Influences on bifurcation of three factors, the notch depth to panel width, the local constitutive law, and the ratio of the panel width to panel length are investigated. A larger ratio of the notch depth to panel width, a steeper softening constitutive law, and a smaller ratio of the panel width to panel length, leads to an earlier bifurcation. These conclusions are consistent with those obtained from a simplified model. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Advances in Structural Engineering SAGE

An Energy Model for Bifurcation Analysis of a Double-Notched Concrete Panel: Continuum Model

Advances in Structural Engineering , Volume 6 (1): 7 – Jan 1, 2003

Loading next page...
 
/lp/sage/an-energy-model-for-bifurcation-analysis-of-a-double-notched-concrete-P30sDpfDea

References (8)

Publisher
SAGE
Copyright
© 2003 SAGE Publications
ISSN
1369-4332
eISSN
2048-4011
DOI
10.1260/136943303321625720
Publisher site
See Article on Publisher Site

Abstract

In this paper, the uni-axial tension of double-notched concrete specimens is analyzed by using a continuum plasticity model. As in a companion paper, the concept of minimization of the second-order energy is used as the criterion for judging a bifurcation. The energy computation is formulated in standard continuum plasticity. The analysis confirms that the unsymmetrical crack propagation (i.e. strains localizing on one side of the specimen) may occur either before or after the peak load. Influences on bifurcation of three factors, the notch depth to panel width, the local constitutive law, and the ratio of the panel width to panel length are investigated. A larger ratio of the notch depth to panel width, a steeper softening constitutive law, and a smaller ratio of the panel width to panel length, leads to an earlier bifurcation. These conclusions are consistent with those obtained from a simplified model.

Journal

Advances in Structural EngineeringSAGE

Published: Jan 1, 2003

There are no references for this article.