Mitchell, J.P.; Chae, S.-U.; Kim, Y.-J.; Abaza, M.E. Finite Element Analysis Using the Crack Strain Separation Model for Reinforced Concrete Membrane. Buildings2023, 13, 1896.
Mitchell, J.P.; Chae, S.-U.; Kim, Y.-J.; Abaza, M.E. Finite Element Analysis Using the Crack Strain Separation Model for Reinforced Concrete Membrane. Buildings 2023, 13, 1896.
Mitchell, J.P.; Chae, S.-U.; Kim, Y.-J.; Abaza, M.E. Finite Element Analysis Using the Crack Strain Separation Model for Reinforced Concrete Membrane. Buildings2023, 13, 1896.
Mitchell, J.P.; Chae, S.-U.; Kim, Y.-J.; Abaza, M.E. Finite Element Analysis Using the Crack Strain Separation Model for Reinforced Concrete Membrane. Buildings 2023, 13, 1896.
Abstract
This paper presents a finite element analysis of the bi-directional orthogonal model, which incorporates individual crack strain separation and tracking. The objective of the research is to expand the current shear friction model to manage bi-directional cracking at any angle, allowing for a more universal model that can be applied to intricate structures and non-proportional loading cases. The proposed model was initially developed as a total strain-based model, with the assumption that crack strains are equivalent to total strains, but was subsequently recalculated to improve accuracy by separating crack strains from total strains. Furthermore, a separate crack strain formulation was created to account for strains in the concrete's uncracked portions and locked-in crack strains. The article then discusses the testing of various convergence methods and loading programs to achieve high convergence. Comparative analyses of the generalized shear friction model with other models for crack orientation and loading cases similar to those of a reinforced concrete membrane are also presented. The MATLAB program successfully applied the bi-directional cracking model for one finite element under a uniform cyclical strain state, using a secant stiffness formulation.
Keywords
Finite Element Model; Crack Strain Separation; Orthogonal; Shear Friction
Subject
Engineering, Architecture, Building and Construction
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
