Accelerated transient elastic-plastic analysis

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F17%3A00310028" target="_blank" >RIV/68407700:21220/17:00310028 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Accelerated transient elastic-plastic analysis

Popis výsledku v původním jazyce

The report summarizes work and results obtained within the first period of project No. 653941 in scope of The EU Framework Programme for Research and Innovation Horizon 2020, namely the part of the work package WP4 participated by the Czech Technical University in Prague. The overall objective of the presented work was to suggest a reliable and effective way how to perform elastic-plastic unsteady simulations of material loading in the critical domains of rotors with respect to complex operating modes. A set of FE-analyses was realised to investigate applicability of 2D axisymmetric model geometry and boundary conditions to analyse the elastic-plastic material response of the turbine rotor shaft. Such idealisation has potential to reduce analysis time and costs while still giving a broad insight into position of critical locations of the structure and keeping accuracy of the obtained deformations and stresses in reasonable error bounds. Sensitivity studies of selected model parameters were performed. 3D submodelling technique was applied to analyse the full 3D stress-strain response in the selected domains. To sum-up, this project phase was divided into three stages: 1. Definition of operating regimes of the steam turbines. Definition of thermo-mechanical boundary conditions and loading of the turbine shaft. Steam turbine type selection. 2. Analysis of applicability of available approaches to FE modelling of turbine rotors (focus on 2D axisymmetric models and 3D submodels). Sensitivity studies on model parameters. 3. Proposal for the accelerated structural elastic-plastic FEA of the turbine rotor shaft. Each topic is thoroughly discussed within the text of this report giving overall insight into the problematics. Information gathered in the report are applicable to developing FE-models of steam turbine rotors with similar parameters.

Název v anglickém jazyce

Accelerated transient elastic-plastic analysis

Popis výsledku anglicky

The report summarizes work and results obtained within the first period of project No. 653941 in scope of The EU Framework Programme for Research and Innovation Horizon 2020, namely the part of the work package WP4 participated by the Czech Technical University in Prague. The overall objective of the presented work was to suggest a reliable and effective way how to perform elastic-plastic unsteady simulations of material loading in the critical domains of rotors with respect to complex operating modes. A set of FE-analyses was realised to investigate applicability of 2D axisymmetric model geometry and boundary conditions to analyse the elastic-plastic material response of the turbine rotor shaft. Such idealisation has potential to reduce analysis time and costs while still giving a broad insight into position of critical locations of the structure and keeping accuracy of the obtained deformations and stresses in reasonable error bounds. Sensitivity studies of selected model parameters were performed. 3D submodelling technique was applied to analyse the full 3D stress-strain response in the selected domains. To sum-up, this project phase was divided into three stages: 1. Definition of operating regimes of the steam turbines. Definition of thermo-mechanical boundary conditions and loading of the turbine shaft. Steam turbine type selection. 2. Analysis of applicability of available approaches to FE modelling of turbine rotors (focus on 2D axisymmetric models and 3D submodels). Sensitivity studies on model parameters. 3. Proposal for the accelerated structural elastic-plastic FEA of the turbine rotor shaft. Each topic is thoroughly discussed within the text of this report giving overall insight into the problematics. Information gathered in the report are applicable to developing FE-models of steam turbine rotors with similar parameters.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

20302 - Applied mechanics

Projekt

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Návaznosti

R - Projekt Ramcoveho programu EK

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů