Nonlinear Finite Element Analysis of Reinforced Concrete Under Short Term Monotonic Loading

Barzegar-Jamshidi, F.; Schnobrich, William C.

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https://hdl.handle.net/2142/14143 Copy

Description

Title

Nonlinear Finite Element Analysis of Reinforced Concrete Under Short Term Monotonic Loading

Author(s)

• Barzegar-Jamshidi, F.
• Schnobrich, William C.

Issue Date

1986-11

Keyword(s)

• Reinforced concrete
• nonlinear analysis
• finite element analysis

Abstract

"Reinforced concrete (R/C) is a composite material which demonstrates a highly nonlinear behavior caused by many interacting factors such as cracking, crushing, aggregate interlock, bond slip, dowel action, as well as yielding of reinforcement. Today the finite element method along with the available computational hardware offer a powerful tool for analyzing complex R/C structures. However, the success of such analyses and the reliability of the numerical results depend on thorough understanding and modeling of different aspects of the nonlinear behavior at the element level. The incompleteness of analytical models for reinforced concrete elements is still a limiting factor to the widespread use of the existing computational capabilities in analysis of R/C structures. In this study a computational procedure for analyzing membrane and flexural R/C elements is developed. The main focus is on the post-cracking behavior of anisotropically reinforced elements. The ""smeared non-orthogonal cracking model"" is modified and extended to simulate the behavior of cracked concrete. The bond effect or ""tension stiffening"" is considered; in cases where the cracks are inclined with respect to the reinforcing direction a rational procedure is formulated. The importance of ""shear retention factor"" and its influence on the load-carrying mechanism is discussed in detail. The feasibility of employing an alternative layering technique to simulate RIC cross sections is investigated. Finally, a number of experimental specimens are analyzed to demonstrate the relative importance of different nonlinear effects and the capabilities of the adopted numerical procedures."

Publisher

University of Illinois Engineering Experiment Station. College of Engineering. University of Illinois at Urbana-Champaign.

Series/Report Name or Number

Civil Engineering Studies SRS-530

Type of Resource

text

Language

en

Permalink

http://hdl.handle.net/2142/14143

Sponsor(s)/Grant Number(s)

National Science Foundation CEE 83-00226

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