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研究生： 卡艾利
Kalmansur, Ellena Putri
論文名稱： 創新混凝土材料和梁彎曲性能的有限元模擬
FEM Simulation on the Innovative Concrete Material and Flexural Behavior of the Beam
指導教授： 劉光晏
Liu, Kuang-Yen
學位類別： 碩士
Master
系所名稱： 工學院 - 土木工程學系
Department of Civil Engineering
論文出版年： 2023
畢業學年度： 111
語文別： 英文
論文頁數： 88
外文關鍵詞： ABAQUS, Light Weight Concrete, Geopolymer Concrete, Flexural Strength, Beam, Numerical Analysis
相關次數： 點閱：56  下載：9 
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    • The Finite Element Method (FEM) can be used in a wide range of software programs and computer applications nowadays in order to accurately simulate the behavior of materials and structural elements. The capacity of these computer programs to accurately reproduce the real behavior of the materials or components seen in experimental tests is referred to as accuracy in this context. A popular piece of software for Finite Element Analysis (FEA) in the field of civil engineering is called ABAQUS. Numerous experiments are carried out all over the world for various reasons. However, due to the complex nature of the challenges involved, structural engineering-related tests have become more expensive and time-consuming. Additionally, after being used in research, materials like concrete and sensor gauges lose their value as tools. The objective of this study is to investigate the behavior of two types of reinforced concrete materials: Lightweight Concrete (LWC) with different ratio of fibers under monotonic loading and Geopolymer Concrete (GPC) under cyclic loading with different steel ratio (ρ) using ABAQUS/CAE. The Concrete Damage Plasticity (CDP) approach in ABAQUS/CAE will be used to predict the material properties based on laboratory experiments. The Concrete Damage Plasticity method considers that the fundamental failure mechanism of concrete is cracking due to tension and compression and models the features of concrete, such as failure models. By leveraging past experiences and validating minute details using reliable data available, numerical tools can save time and costs.

    ABSTRACT i TABLE OF CONTENTS ii LIST OF FIGURES v LIST OF TABLES xii CHAPTER 1 INTRODUCTION 1 1.1 Introduction 1 1.2 Objectives 3 1.3 Scope of Project 4 CHAPTER 2 LITERATURE REVIEW 5 2.1. Material Properties 5 2.1.1. Lightweight Concrete (LWC) 5 2.1.2. Geopolymer Concrete (GPC) 6 2.1.3. Steel Behavior 8 2.2. Beam Behavior 10 2.2.1. Monotonic loading on LWC Beams with Fibers 10 2.2.2. Cyclic Loading on GPC Beams with Different Steel Ratio (ρ) 13 2.3. Concrete Constitutive Model 14 2.3.1. Hognestad (1951) 15 2.3.2. Kent and Park (1971) 15 2.3.3. Eurocode2 (2004) 16 2.4. Finite Element Method (FEM) 17 2.5. ABAQUS/CAE 18 2.4.1 ABAQUS/CAE Module 18 2.4.2 Concrete Damage Plasticity (CDP) 23 CHAPTER 3 LIGHT WEIGHT CONCRETE 25 3.1. Experimental Process 25 3.2. Material Simulations 27 3.2.1. Concrete Model 27 3.2.2. Reinforcing Steel Bar ModelCompressive Behavior 28 3.3. Calibration and Validation of Control Model 29 3.4. Loading Simulation 33 3.5. Result and Discussion 34 CHAPTER 4 GEOPOLYMER CONCRETE 42 4.1. Experimental Process 42 4.2. Material Simulations 44 4.2.1. Concrete Model 44 4.2.2. Reinforcing Steel Bar Model 44 4.3. Calibration and Validation of Control Model 45 4.4. Loading Simulation 52 4.5. Result and Discussion 52 CHAPTER 5 CONCLUSION 57 5.1. Conclusion 57 5.2. Research Suggestions 58 REFERENCES 59 APPENDIX A: CDP PARAMETER FOR LIGHTWEIGTH CONCRETE 62 APPENDIX B: ABAQUS MODELING PROCESS 80

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