PSI - Issue 6

ScienceDirect Available online at www.sciencedirect.com Av ilable o line at www.sciencedire t.com ScienceDirect Structural Integrity Procedia 00 (2016) 000 – 000 Procedia Structu al Integrity 6 (2017) 228–235 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2017) 000–000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2017) 000–000

www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia

www.elsevier.com/locate/procedia

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) Time-Dependent Hydro-Geomechanical Reservoir Simulation of Field Production Bazyrov I.ª*, Glazyrina A. ᵇ , Lukin S. ᵇ , Alchibaev D. ᵇ , Salishchev M. ᵇ , Ovcharenko Yu. ᵇ ª Saint-Petersburg Mining University, Department of oil and gas fields development and operation, Vasilievsky Island, 21st line,2, 199106 St Petersburg, Russian-Federation ᵇ Gazpromneft Science & Technology Centre, Geomechanics Unit, 75-79 liter D Moika River emb., 19000, St Petersburg, Russian-Federation Abstract In this paper pore pressure effects such as stress reorientation and faults reactivation are considered. Risk assessment of these effects is crucial for field development planning. Coupled 4D hydro-mechanical modelling was carried out to evaluate the prospects of well-candidates for repeated multistage hydraulic fracturing, particularly the repeated fracture geometry alteration. Furthermore, the factors influencing repeated fracture orientation were clarified. Influence of pore pressure on faults reactivation was considered in the context of fault permeability definition. Several methods for validation of numerical simulations have been reviewed. © 2017 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the MCM 2017 organizers. Keywords: numerical simulation, geomechanics, hydraulic fracturing, refracturing, pore pressure, coupled simulation, principal stress reorientation, micro-seismic observation Introduction Development of oil and gas fields is a process of hydrocarbon production that occurs due to disequilibrium in a reservoir. The mechanical impact on a reservoir is the reason of volume changes and results in redistribution of pore XXVII International Conference “Mathematical and Computer Simulations in echanics of Solids and Structures”. Fundamentals of Static and Dynamic Fracture (MCM 2017) Time-D pend nt Hydro-Geomechanical Reservoir Simulation of Field Production Bazyrov I.ª*, Glazyrina A. ᵇ , Lukin S. ᵇ , Alchibaev D. ᵇ , Salishchev M. ᵇ , Ovcharenko Yu. ᵇ ª Saint-Petersburg Mining University, Department of oil and gas field development a d operation, Vasilievsky Island, 21st line,2, 199106 St Petersburg, Russian-Federation ᵇ Gazpromneft Science & Technology Centre, Geomechanics Unit, 75-79 liter D Moika River emb., 19000, St Petersburg, Russian-Federation Abstract In this paper pore pr ssur effects such s stress re rientation an faults re ctivation are considered. Risk assessment of thes effects i crucia for field develo ment planning. Coupled 4D hyd o-mechanic l mod lling was carried out to ev uate the prospects of well-candidates for repeated multistage hydraulic fracturing, particularly th repeat d fracture geometry lteration. Furthermor , the factors influencing repeat d fractur or entation were clarified. Influence of pore pr ssure on f ults reactivatio was co sider d in the c text of fault pe meability definiti . Seve al methods for validatio of nu erical simulatio s have been reviewed. © 2017 The Autho s. Publ shed by Elsevier B.V. Peer-review under responsibility of the MCM 2017 organizers. Keywords: u erical s ulation, geomechanics, hydraulic fracturing, refracturing, pore pressure, coupled simulation, principal stress reorientation, micro-seismic observation Introduction Development of oil and gas fields is a process of hydrocarbon production that occurs due to isequilibrium in a reservoir. The mechanical impact on a reservoir is the reason of volume changes and results in redistribution of pore © 2016 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of PCF 2016.

Keywords: High Pressure Turbine Blade; Creep; Finite Element Method; 3D Model; Simulation.

* Corresponding author. Tel.: +7-911-033-9958 (I.Bazyrov) E-mail addresses: Ildarbazyrov@gmail.com (I.Bazyrov), Glazyrina.AE@gazpromneft-nct.ru (A.Glazyrina), Lukin.SV@gazpromneft-nct.ru (S.Lukin), Alchibaev.DV@ gazpromneft-nct.ru (D.Alchibaev), Salishchev.MV@gazpromneft-ntc.ru (M. Salishchev), Ovcharenko.YuV@gazpromneft-ntc.ru (Yu.Ovcharenko) * Correspon ing author. Tel.: +7-911-033-9958 (I.Baz ro ) E-mail addresses: Ildarbazyrov@ mail.com (I.Bazyrov), Glazyrina.AE@gazpromneft-nct.ru (A.Glazyrina), Lukin.SV@gazpromneft-nct.ru (S.Lukin), Alchibaev.DV@ gazpromneft-nct.ru (D.Alchibaev), Salishchev.MV@gazpromneft-ntc.ru (M. Salishchev), Ovcharenko.YuV@gazpromneft-ntc.ru (Yu.Ovcharenko)

* Corresponding author. Tel.: +351 218419991. E-mail address: amd@tecnico.ulisboa.pt 2452 3216 © 2017 Th Authors. Published by Elsevier B.V. Peer-review under responsibility of the MCM 2017 organizers. 2452-3216 © 2017 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.2017.11.035