Title: Isotropic damage model to simulate failure in reinforced concrete beam // Magazine of Civil Engineering. – 2021. – С. 10714
Creators: Al-Kutti W. A.; Chernykh T. C.
Imprint: 2021
Collection: Общая коллекция
Subjects: Строительство; Строительная механика; reinforced concrete beams; destruction of reinforced concrete beams; modeling of destruction of beams; isotropic damage; bending loads; beam stiffness; железобетонные балки; разрушение железобетонных балок; моделирование разрушения балок; изотропные повреждения; изгибные нагрузки; жесткость балок
UDC: 624.04
LBC: 38.112
Document type: Article, report
File type: PDF
Language: English
DOI: 10.34910/MCE.107.14
Rights: Свободный доступ из сети Интернет (чтение, печать, копирование)
Record key: RU\SPSTU\edoc\67982

Allowed Actions: Read Download (1.0 Mb)

Group: Anonymous

Network: Internet


This study investigates the possibility of simulating the behavior of reinforced concrete (RC) beams subjected to flexure using a simplified elasto-isotropic damage. The phenomenological damage concept was used to evaluate stress-induced damage. The influence of the damage on elastic stiffness was used to evaluate mechanical performance with respect to material degradation. RC beams damaged in flexure with 40 %, 60 %, 75 %, and 90 % of ultimate flexural loading were modeled using the COMSOL Multi-physics finite element package to simulate mechanical performance of RC concrete beams. The proposed elasto-damage model predicted the ultimate load of the RC beams with 1 % estimated error. The proposed model showed similar ability to predict the axial strain for the reinforcement steel as the maximum strain in tensile reinforcement. The accuracy of these results were compared with other constitutive models for concrete such as elasto-plastic damage model reported in literature. The outcome of this research paper provides engineers with a simplified approach for analyzing the behavior of RC beams subjected to flexural loading using elasto-damage model.

Document access rights

Network User group Action
ILC SPbPU Local Network All Read Print Download
-> Internet All Read Print Download

Table of Contents

  • Isotropic damage model to simulate failure in reinforced concrete beam
    • 1. Introduction
    • 2. Methods
      • 2.1. Testing plan
      • 2.2. Cement, aggregates and mix design
      • 2.3. Specimens
      • 2.4. Curing
      • 2.5. Laboratory Tests
      • 2.5.1 Compressive strength
      • 2.5.2 Flexural Test
    • 3. Results and Discussion:
      • 3.1. Mechanical Behavior
      • 3.2. COMSOL Simulation Steps
      • 3.3. COMSOL Simulation of Mechanical Behavior
      • 3.3.4 COMSOL Simulation of Mechanical Damage
      • 3.3.5 Cracks Development in RC Beams
    • 4. Conclusions

Usage statistics

stat Access count: 158
Last 30 days: 9
Detailed usage statistics