| Full text | |
| Author(s): |
Total Authors: 3
|
| Affiliation: | [1] Univ Sao Paulo, Engn Sch Sao Carlos, Dept Struct Engn, Sao Carlos, SP - Brazil
[2] Univ Los Andes, Dept Struct Engn, Merida 5101 - Venezuela
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | ENGINEERING STRUCTURES; v. 70, p. 23-35, JUL 1 2014. |
| Web of Science Citations: | 9 |
| Abstract | |
This paper presents a formulation for the analysis of the inelastic behavior of pipes, tunnels and rings. This new framework is based on lumped damage mechanics and emphasizes on the mathematical description of concrete cracking; the approach can be extended to other brittle materials as well. Lumped damage mechanics combines the concept of plastic hinge with the ideas and procedures of fracture and continuum damage mechanics. The resulting models allow for the characterization of the damage state of the structure, it is even possible to quantify the crack opening displacements in a simplified way. Experimental and fracture mechanics results were used to validate the proposed method. The structural analyses can be carried out using very few elements (less than a dozen in most cases) while the conventional approaches require tens of thousands of them. Thus, even if the models can be implemented in conventional finite element programs, the computations can also be carried out with symbolic manipulators, general numerical analysis programs (Maple, Matlab, Mathematica, Mathcad, and so on) or even spread-sheet applications. This simplified approach can be used for design purposes, validation of finite element analysis or structural reliability assessment where thousands of analyses of a same structure are needed. (C) 2014 Elsevier Ltd. All rights reserved. (AU) | |
| FAPESP's process: | 12/02370-7 - New developments and applications of lumped damage mechanics |
| Grantee: | Ana Lucia Homce de Cresce El Debs |
| Support Opportunities: | Research Grants - Visiting Researcher Grant - International |