PSI - Issue 6

ScienceDirect Available online at www.sciencedirect.com Available o line at www.sciencedire t.com ScienceDirect Structural Integrity Procedia 00 (2016) 000 – 000 Procedia Structu al Integrity 6 (2017) 244–251 Available online at www.sciencedirect.com ScienceDirect StructuralIntegrity Procedia 00 (2017) 000 – 000 Available online at www.sciencedirect.com ScienceDirect StructuralIntegrity Procedia 00 (2017) 000 – 000

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XV Portuguese Conference on Fracture, PCF 2016, 10-12 February 2016, Paço de Arcos, Portugal Thermo-mechanical modeling of a high pressure turbine blade of an airplane gas turbine engine P. Brandão a , V. Infante b , A.M. Deus c * a Department of Mechanical Engineering, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1, 1049-001 Lisboa, Portugal b IDMEC, Department of Mechanical Engineering, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1, 1049-001 Lisboa, Portugal c CeFEMA, Department of Mechanical Engineering, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1, 1049-001 Lisboa, Portugal Abstract During their operation, modern aircraft engine components are subjected to increasingly demanding operating conditions, especially the high pressure turbine (HPT) blades. Such conditions cause these parts to undergo different types of time-dependent degradation, one of which is creep. A model using the finite element method (FEM) was developed, in order to be able to predict the creep behaviour of HPT blades. Flight data records (FDR) for a specific aircraft, provided by a commercial aviation company, were used to obtain thermal and mechanical data for three different flight cycles. In order to create the 3D model needed for the FEM analysis, a HPT blade scrap was scanned, and its chemical composition and material properties were obtained. The data that was gathered was fed into the FEM model and different simulations were run, first with a simplified 3D rectangular block shape, in order to better establish the model, and then with the real 3D mesh obtained from the blade scrap. The overall expected behaviour in terms of displacement was observed, in particular at the trailing edge of the blade. Therefore such a model can be useful in the goal of predicting turbine blade life, given a set of FDR data. Copyright © 2017 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the MCM 2017 organizers. XXVII International Conference “Mathematical and Computer Simulations in Mechanics of Solids and Structures”. Fundamentals of Static and Dynamic Fracture (MCM 2017) Strength analysis of nuclear power plant structures in case of aircraft crash impact Fedorenko R.V. a, *, Kudryavtsev A.A. a , Lukin A.V. a ,Modestov V.S. a , Murtazin I.R. a a Peter the Great St.Petersburg Polytechnic University, Institute of Applied Mathematics and Mechanics, dep. of Mechanics and Control Abstract In this article the results of the strength analysis of nuclear power plant structures in case of aircraft crash impact probl m are presented.Finite element analysi was pe formed using ABAQUS CAE system. Nonlinear material models were used, such as “Concrete damaged plasticity” and “Drucker - Prager” for concrete and el astic-plastic model for steel.For the purpose of verification of the mathematical models and engineering methods used in reinforcement concrete buildings strength analysis under different loads (static and transient temperature, structural and other loads), the following computational simulations were carried out: uniaxial compression of the cylindrical concrete specimens; reinforced concrete beams analysis under the static loads;reinforced concrete slab analysis under dynamic loads; reinforced concrete slab analysis under the missile impact. Experimental data for the aforenamed verificatory tasks was found in periodicals. © 2017 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the MCM 2017 organizers. Keywords: finite element method; nuclear power plant; strength analysis; reinforced concrete; aircraft impact; stress-strain state; Riera method. XXVII International Conference “Mathematical and Computer Simulations in echanics of Solids and Structures”. Fundamentals of Static and Dynamic Fracture (MCM 2017) Strength analysis of nuclear power plant structures in c se of aircraft crash impact Fedorenko R.V. a, *, Kudryavtsev A.A. a , Lukin A.V. a ,Modestov V.S. a , Murtazin I.R. a a Peter the Great St.Petersburg Polytechnic University, Institute of Applied Mathematics and Mechanics, dep. of Mechanics and Control Abstract In this article the results of th strength analy is of nuclear power plant structures in case of aircraft crash impact pr blem are presented.Finite element analysis was perfo med using ABAQUS CAE system. Nonlinear material ls were used, such as “Concrete dam ged plasticity” and “Drucker - Prager” for concrete and el astic-plastic model for steel.Fo the purpose of verification of the math matical models and e gineering methods used in reinf rc ment concrete buildings strength analysis under different loa s (static nd transient temperature, structur l and oth r loads), the following computational simul tions wer carried out: uniaxial c mpression of the cyli drical concrete specimens; reinforced concrete beams analysis under the static loads;reinforced concrete sl b analysis under dynamic lo ds; reinforced concrete slab analysis under the missile impact. Experimental data for the aforenamed verificatory tasks was found in periodicals. © 2017 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the MCM 2017 organizers. Keywords: finite element method; nuclear power plant; strength analysis; reinforced concrete; aircraft impact; stress-strain state; Riera method. © 2016 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of PCF 2016. One of the uclear power plants (NPP) engineering pr blems is strength calculation and loading bearing capacity (in particular, analysis of the NPPs’ outer containment) under a ircraft crash impact. In addition, important aspect is One of the nuclear power plants (NPP) engineering problems is strength calculation and loading bearing capacity (in particular, analysis of the NPPs’ outer containment) under a ircraft crash impact. In addition, important aspect is Keywords: High Pressure Turbine Blade; Creep; Finite Element Method; 3D Model; Simulation. 1. Introduction 1. Introduction

* Fedorenko Roman. Tel.: +7-921-921-11-17. E-mail address: fedorenko_rv@spbstu.ru * Fedorenko Roman. T l.: +7-921-921-11-17. E-mail address: fedorenko_rv@spbstu.ru

* Corresponding author. Tel.: +351 218419991. E-mail address: amd@tecnico.ulisboa.pt 2452 3216 © 201 7 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the MCM 2017 organizers. 2452-3216 © 201 7 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the MCM 2017 organizers.

2452-3216 © 2016 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of PCF 2016.

2452-3216 Copyright  2017 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the MCM 2017 organizers. 10.1016/j.prostr.2017.11.037