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) 322–329 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

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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) Estimation of aerodynamic instability of building structures Belostotsky A.M. a,b,c , Afanasyeva I.N. a,b,c , Lantsova I.Yu c, *, Petryashev S.O. c , Petryashev N.O. c a Scientific Research Center “ StaDyO ”, office 810, 8 floor, 18, 3 -rd Yamskogo Polya Street, Moscow, 125040, Russia b Research Institute of Building Physics of the Russian Academy of Architecture and Construction Sciences, 21 Lokomotivniy Proezd, Moscow, 127238, Russia c National Research Moscow State University of Civil Engineering, 26, Yaroslavskoe Shosse, Moscow, 129337, Russia Abstract The interaction of flexible structures with the wind flow and the possibility of the occurrence of so-called aerodynamics instability is an actual problem. The sad experience of different years has shown that the phenomenon of aerodynamics instability is characteristic for various types of structures, such as bridge structures, asymmetric and high structures. This experience gave impetus to the study and development of methods for predicting and preventing all possible resonant and unstable oscillations. To verify methods for estimating of the aerodynamic instability, following test problem was chosen - the interaction of the cross section of the bridge on the Tacoma River (Tacoma Narrows Bridge) with the air flow. This task was solved by a team of scientists from China and presented at the international conference (The Seventh International Colloquium on Bluff Body Aerodynamics and Applications (BBA 7) Shanghai, China; September 2-6, 2012) [1]. © 2017 The Author . Published by Elsevier B.V. Peer-review und r responsibility of the MCM 2017 organizers. Keywords: aerodynamics, a roelastic problems, Fluid Structur Interaction (FSI), aerodynamics instability, bridge a rodynamics, civil wind engineering, numerical simulation, computational f uid dynamics XXVII International Conference “Mathematical and Computer Simulations in echanics of Solids and Structures”. Fundamentals of Static and Dynamic Fracture (MCM 2017) Estimation of a rodynamic instability of building structure Belostotsky A.M. a,b,c , Afanasyeva I.N. a,b,c , Lantsova I.Yu c, *, Petryashev S.O. c , Petryashev N.O. c a Scientific Research Center “ StaDyO ”, office 810, 8 floor, 18, 3 -rd Yamskogo Polya Street, Moscow, 125040, Russia b Research Institute of Building Physics of the Russian Academy of Architecture and Construction Sciences, 21 Lokomotivniy Proezd, Moscow, 127238, Ru sia c National Research Moscow State University of Civil Engineering, 26, Yaroslavskoe Shosse, Moscow, 129337, Russia Abstract The interaction of flexible structures with the wind flow and the possibility of the occurrence of so-called aerodynamics instability is an actual problem. The sad experience of different years has shown that the phenomenon of aerodynamics i stability is characteristic for various types of structures, such as bridge structures, asymmetric and high structures. This experience gave impetus to the study and development of methods for predicting and preventing all possible resonant and unstable oscillations. To verify methods for estimating f the aerodynamic instability, following test problem was c osen - the interaction of the cross section of the bridge on the Tacoma River (Tacoma Narrows Bridge) with the air flow. This task was solved by a team of scientists from China and presented at the i ternational conferenc (The Seventh International Colloquium on Bluff Body Aerodynamics and Applications (BBAA7) Shanghai, China; September 2-6, 2012) [1]. © 2017 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the MCM 2017 organizers. Keywords: aerodynamics, aeroelastic problems, Fluid Structure Interaction (FSI), ae odyn mics instability, bri aerodynamics, civil wind engineering, umerical simulation, computational fluid dynamics

© 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(916)834-43-94 E-mail address: irina-lanzova@mail.ru * Correspon ing author. Tel. +7(916)834-43-94 E-mail address: irina-lanzova@mail.ru

* 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.2017.11.049