Finite Element Analysis of Shear Strength Degradation of Reinforced Concrete Members with Corrosion

2021 ◽  
pp. 313-321
Author(s):  
R. A. C. G. Ranasinghe ◽  
J. M. R. S. Appuhamy
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Shear Strength ◽  
Reinforced Concrete ◽  
Strength Degradation ◽  
Element Analysis ◽  
Concrete Members ◽  
Shear Strength Degradation

scholarly journals Analytical Model of Two-Directional Cracking Shear-Friction Membrane for Finite Element Analysis of Reinforced Concrete

Materials ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1460
Author(s):  
Jeffrey P. Mitchell ◽  
Bum-Yean Cho ◽  
Yoo-Jae Kim
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Shear Strength ◽  
Reinforced Concrete ◽  
Shear Stiffness ◽  
Friction Model ◽  
Element Analysis ◽  
Proposed Model ◽  
Shear Friction ◽  
Load Vector

There are a multitude of existing material models for the finite element analysis of cracked reinforced concrete that provide reduced shear stiffness but do not limit shear strength. In addition, typical models are not based on the actual physical behavior of shear transfer across cracks by shear friction recognized in the ACI 318 Building Code. A shear-friction model was recently proposed that was able to capture the recognized cracked concrete behavior by limiting shear strength as a yielding function in the reinforcement across the crack. However, the proposed model was formulated only for the specific case of one-directional cracking parallel to the applied shear force. This study proposed and generalized an orthogonal-cracking shear-friction model for finite element use. This was necessary for handling the analysis of complex structures and nonproportional loading cases present in real design and testing situations. This generalized model was formulated as a total strain-based model using the approximation that crack strains are equal to total strains, using the proportional load vector, constant vertical load, and modified Newton–Raphson method to improve the model’s overall accuracy.

Sign in / Sign up

Export Citation Format

Share Document