Determination of Elastic Plastic Fracture Toughness Parameters for a Compact Tension Specimen Using the Finite Element Method
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Uğur Özdemir
Abstract
In this study, elastic-plastic fracture toughness of an aluminum alloy is investigated. J-integral was calculated using the finite element software and formulation. Crack tip opening displacement (CTOD) is determined by using the plastic hinge model (δph) and direct measurement (δ5). J-Δ a and CTOD-Δ a resistance curves are constructed and compared with those obtained from formulation and those generated from test data, respectively. Good agreement has been obtained between the test results, the formulation and the results of the finite element analysis. The relationship between δph and δ5 is nonlinear and as CTOD increases δ5 becomes larger than δph. The relationship between J-integral and CTOD is found to be linear for both δph and δ5. It has been seen that the proportionality constant dn considerably depends on the method of calculation of CTOD.
Kurzfassung
In der diesem Beitrag zugrunde liegenden Studie wurde das bruchmechanische Verhalten einer Aluminiumlegierung untersucht. Hierzu wurde das J-Integral unter Verwendung einer Finite Elemente Software mit der entsprechenden Formulierung bestimmt. Der CTOD-Wert wurde mittels des plastischen Hinge-Modells (δ ph) sowie anhand direkter Messung (δ5) ermittelt. Die J-Δa und CTOD-Δa Widerstandkurven wurden entwickelt sowie jeweils mit den formulierten und mit denen aus Testdaten generierten verglichen. Es konnte eine gute Übereinstimmung zwischen den Testergebnissen, der Formulierung und den Ergebnissen der Finite Elemente Analysen erzielt werden. Das Verhältnis zwischen δph und δ5 ist nichtlinear und wenn der CTOD-Wert ansteigt, wird δ5 größer als δph. Das Verhältnis zwischen dem J-Integral und dem CTOD-Wert war sowohl für δph als auch für δ5 linear. Es konnte festgestellt werden, dass die Proportionalitätskonstante dn bemerkenswert von dem Kalkulationsverfahren des CTOD-Wertes abhängt.
References
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© 2012, Carl Hanser Verlag, München
Artikel in diesem Heft
- Inhalt/Contents
- Inhalt
- Fachbeiträge/Technical Contributions
- Effect of Heat Treatment Conditions on Microstructure and Mechanical Properties of Long Term Serviced Fe25Cr-35Ni Alloy
- Characterization of Eutectic Sn-Cu Solder Alloy Properties Improved by Additions of Ni, Co and In
- Recycling of Aluminium Alloy Scraps by Pressure-Assisted Investment Casting for Aluminium Foam Manufacture
- X-ray Residual Stress Analysis of Nitrided Low Alloyed Steels
- Determination of Elastic Plastic Fracture Toughness Parameters for a Compact Tension Specimen Using the Finite Element Method
- Structural Damage Detection Using Modal Parameters and Particle Swarm Optimization
- Examination of Microstructure and Wear Behaviour of a Roller Material Produced by Centrifugal Casting
- Effects of Co as an Alloying Element and Heat Treatment Processes on the Properties of High Speed Steels
- Application of Genetic Algorithm (GA) for Optimum Design of Module, Shaft Diameter and Bearing for Bevel Gearbox
- Evaluation and Optimization of Operating Parameters Affecting the Davis Tube Magnetic Tester by Using 2nd Factorial Design
- Terahertz Time Domain Spectroscopy for Non-Destructive Testing of Hazardous Liquids
- Vorschau/Preview
- Vorschau
- Kalender/Calendar
- Kalender
Artikel in diesem Heft
- Inhalt/Contents
- Inhalt
- Fachbeiträge/Technical Contributions
- Effect of Heat Treatment Conditions on Microstructure and Mechanical Properties of Long Term Serviced Fe25Cr-35Ni Alloy
- Characterization of Eutectic Sn-Cu Solder Alloy Properties Improved by Additions of Ni, Co and In
- Recycling of Aluminium Alloy Scraps by Pressure-Assisted Investment Casting for Aluminium Foam Manufacture
- X-ray Residual Stress Analysis of Nitrided Low Alloyed Steels
- Determination of Elastic Plastic Fracture Toughness Parameters for a Compact Tension Specimen Using the Finite Element Method
- Structural Damage Detection Using Modal Parameters and Particle Swarm Optimization
- Examination of Microstructure and Wear Behaviour of a Roller Material Produced by Centrifugal Casting
- Effects of Co as an Alloying Element and Heat Treatment Processes on the Properties of High Speed Steels
- Application of Genetic Algorithm (GA) for Optimum Design of Module, Shaft Diameter and Bearing for Bevel Gearbox
- Evaluation and Optimization of Operating Parameters Affecting the Davis Tube Magnetic Tester by Using 2nd Factorial Design
- Terahertz Time Domain Spectroscopy for Non-Destructive Testing of Hazardous Liquids
- Vorschau/Preview
- Vorschau
- Kalender/Calendar
- Kalender
