http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Zambon, Ivan (검색결과 4 건)
- 무료
- 기관 내 무료
- 유료
-
Zambon, Ivan,Vidovic, Anja,Strauss, Alfred,Matos, Jose,Friedl, Norbert Techno-Press 2018 Smart Structures and Systems, An International Jou Vol.21 No.3
The second half of the 20th century was marked with a significant raise in amount of railway bridges in Austria made of reinforced concrete. Today, many of these bridges are slowly approaching the end of their envisaged service life. Current methodology of assessment and evaluation of structural condition is based on visual inspections, which, due to its subjectivity, can lead to delayed interventions, irreparable damages and additional costs. Thus, to support engineers in the process of structural evaluation and prediction of the remaining service life, the Austrian Federal Railways (${\ddot{O}}$ BB) commissioned the formation of a concept for an anticipatory life cycle management of engineering structures. The part concerning concrete bridges consisted of forming a bridge management system (BMS) in a form of a web-based analysis tool, known as the LeCIE_tool. Contrary to most BMSs, where prediction of a condition is based on Markovian models, in the LeCIE_tool, the time-dependent deterioration mechanisms of chloride- and carbonation-induced corrosion are used as the most common deterioration processes in transportation infrastructure. Hence, the main aim of this article is to describe the background of the introduced tool, with a discussion on exposure classes and crucial parameters of chloride ingress and carbonation models. Moreover, the article presents a verification of the generated analysis tool through service life prediction on a dozen of bridges of the Austrian railway network, as well as a case study with a more detailed description and implementation of the concept applied.
-
Ivan Zambon,Anja Vidović,Alfred Strauss,Jose Matos,Norbert Friedl 국제구조공학회 2018 Smart Structures and Systems, An International Jou Vol.21 No.3
The second half of the 20th century was marked with a significant raise in amount of railway bridges in Austria made of reinforced concrete. Today, many of these bridges are slowly approaching the end of their envisaged service life. Current methodology of assessment and evaluation of structural condition is based on visual inspections, which, due to its subjectivity, can lead to delayed interventions, irreparable damages and additional costs. Thus, to support engineers in the process of structural evaluation and prediction of the remaining service life, the Austrian Federal Railways (oBB) commissioned the formation of a concept for an anticipatory life cycle management of engineering structures. The part concerning concrete bridges consisted of forming a bridge management system (BMS) in a form of a web-based analysis tool, known as the LeCIE_tool. Contrary to most BMSs, where prediction of a condition is based on Markovian models, in the LeCIE_tool, the time-dependent deterioration mechanisms of chloride- and carbonation-induced corrosion are used as the most common deterioration processes in transportation infrastructure. Hence, the main aim of this article is to describe the background of the introduced tool, with a discussion on exposure classes and crucial parameters of chloride ingress and carbonation models. Moreover, the article presents a verification of the generated analysis tool through service life prediction on a dozen of bridges of the Austrian railway network, as well as a case study with a more detailed description and implementation of the concept applied.
-
Nonlinear viscous material model
Ivica Kozar,Ivana Ban,Ivan Zambon Techno-Press 2023 Coupled systems mechanics Vol.12 No.5
We have developed a model for estimating the parameters of viscous materials from indirect tensile tests for asphalt. This is a simple Burger nonlinear rheological two-cell model or standard model. At the same time, we begin to develop a more versatile and complex multi-cell model. The simple model is validated using experimental load-displacement results from laboratory tests: The recorded displacements are used as input values and the measured force data are simulated with the model. The optimal model parameters are estimated using the Levenberg-Marquardt method and a very good agreement between the experimental results and the model calculations is shown. However, not all parts of the model are active in the loading phase of the experiment, so we extended the validation of the model to the simulation of the relaxation behaviour. In this stage, the other model parameters are activated and the simulation results are consistent with the literature. At this stage, we have estimated the parameters only for the two-cell uniaxial model, but further work will include results for the multi-cell model.
-
CRUNCH CFD<SUP>®</SUP> Turbulent Combustion Modeling Capabilities for Rocket Engine Applications
Jongmin Kim(김종민),Hyungchul Jeon(전형철),Sungtae Kim(김성태),Balaji Muralidhar,Andrea C. Zambon,Ashvin Hosangadi,William H. Calhoon, Jr. 한국추진공학회 2018 한국추진공학회 학술대회논문집 Vol.2018 No.12
This paper provides an overview of the implementation and validation of the Flamelet Generated Manifold (FGM) combustion model into CRUNCH CFD®, CRAFT Tech’s unstructured, high-fidelity CFD solver. The implementation extends over an existing Laminar Flamelet Model (LFM) based lookup approach that has been successfully employed in the past for investigating combustion and wall heat transfer under high-pressure conditions, e.g., in liquid rocket engines. Robustness and accuracy of the FGM approach are demonstrated by studying two canonical flame configurations: (i) a piloted methane/air flame and (ii) a lifted methane flame. Simulation data are compared with past experimental results for validation of the developed approach. As a demonstration of the application of FGM to high-pressure conditions, a simplified setup of a gaseous H₂ and liquid O₂ supercritical combustor is investigated. This study indicates that FGM captures more flame unsteadiness since finite rate chemistry effects are resolved.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
